Carrier Air Conditioner 30RA RH User Manual

30RA/RH “B”

30RY/RYH “B”

PRO-DIALOG Control

AQUASNAP

Operation and maintenance instructions

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5 - PRO-DIALOG CONTROL OPERATION ............................................................................................................................29

5.1 - Start/stop control ................................................................................................................................................................29

5.2 - Heating/cooling operation ..................................................................................................................................................30

5.2.1 - General .......................................................................................................................................................................30

5.2.2 - Heating/cooling selection .......................................................................................................................................... 30

5.3 - Evaporator water pump control .......................................................................................................................................... 31

5.4 - Control interlock contact ....................................................................................................................................................31

5.5 - Evaporator heater control ................................................................................................................................................... 31

5.6 - Control point.......................................................................................................................................................................31

5.6.1 - Active setpoint ...........................................................................................................................................................31

5.6.2 - Reset........................................................................................................................................................................... 33

5.7 - Demand limit ...................................................................................................................................................................... 33

5.8 - Night mode ......................................................................................................................................................................... 33

5.9 - Capacity control.................................................................................................................................................................. 33

5.10 - Head pressure control .......................................................................................................................................................33

5.11 - Defrost function ................................................................................................................................................................34

5.12 - Additional electric heater stage control ............................................................................................................................34

5.13 - Control of a boiler ............................................................................................................................................................34

5.14 - Master/slave assembly ...................................................................................................................................................... 34

5.15 - Controlling Pro-Dialog units with a System Manager .....................................................................................................34

6 - DIAGNOSTICS - TROUBLESHOOTING ............................................................................................................................35

6.1 - General ...............................................................................................................................................................................35

6.2 - Displaying alarms ...............................................................................................................................................................35

6.3 - Resetting alarms .................................................................................................................................................................35

6.4 - Alarm codes ........................................................................................................................................................................35

GENERAL LEGEND

Each of the following drawings is replaced in the whole document by the corresponding explanation:

Start/stop button

Return key

Down arrow

Up arrow

DELTA T. Example: temperature difference between entering and leaving heat exchanger temperatures

means character is flashing

The cover graphics are solely for illustration and forms no part of any offer for sale or any sale contract. The manufacturer

reserves the right to change the design at any time without notice.

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1 - SAFETY CONSIDERATIONS

1.1 - General

2 - GENERAL DESCRIPTION

2.1 - General

Installation, start-up and servicing of equipment can be

hazardous if certain factors particular to the installation are not

considered: operating pressures, presence of electrical

components and voltages and the installation site (elevated

plinths and built-up up structures). Only properly qualified

installation engineers and highly qualified installers and

technicians, fully trained for the product, are authorised to

install and start-up the equipment safely. During all servicing

operations all instructions and recommendations which appear

in the installation and service instructions for the product, as

well as on tags and labels fixed to the equipment and

Pro-Dialog is a system for controlling single or dual-circuit

30RA/RY air-cooled liquid chillers or air-to-water 30RH/RYH

heat pumps. Pro-Dialog controls compressor start-up needed to

maintain the desired heat exchanger entering or leaving water

temperature. In cooling mode it controls the operation of the fans

to maintain the correct condensing pressure in each circuit. For

heat pump units it controls and optimises the defrost cycles of

each circuit in order to minimize the heating capacity

reduction. Safety devices are constantly monitored by Pro-

Dialog to ensure their safe operation. Pro-Dialog also gives

access to a Quick Test program covering all inputs and outputs.

components and accompanying parts supplied separately, must

be read, understood and followed.

All PRO-DIALOG controls can work in accordance with three

independent modes:

•

Apply all standard safety codes and practices.

Wear safety glasses and gloves.

Use the proper tools to move heavy objects. Move units

carefully and set them down gently.

•

Local mode: the machine is controlled by commands from

the user interface.

Remote mode: the machine is controlled by remote

contacts (volt-free contacts).

CCN mode: the machine is controlled by commands from

the Carrier Comfort Network (CCN). In this case, a data

communication cable is used to connect the unit to the

CCN communication bus.

1.2 - Avoid electrocution

Only personnel qualified in accordance with IEC (International

Electrotechnical Commission) recommendations may be

permitted access to electrical components. It is particularly

recommended that all sources of electricity to the unit be shut

off before any work is begun. Shut off the main power supply

at the main circuit breaker or isolator.

The operating mode must be chosen with the Start/Stop button

described in section 4.2.1. When the PRO-DIALOG system

operates autonomously (Local or Remote mode) it retains all of

its own control capabilities but does not offer any of the

features of the CCN network.

IMPORTANT: This equipment uses and emits

electromagnetic signals. Tests have shown that the equipment

conforms to all applicable codes with respect to

electromagnetic compatibility.

2.2 - Abbreviations used

In this manual, the refrigeration circuits are called circuit A and

circuit B. The compressors in circuit A are labelled A1, A2 and

A3. Those in circuit B are B1, B2 and B3.

RISK OF ELECTROCUTION: Even when the main circuit

breaker or isolator is switched off, certain circuits may still

be energised, since they may be connected to a separate power

source.

The following abbreviations are used frequently:

CCN : Carrier Comfort Network

RISK OF BURNS: Electrical currents cause components to

get hot either temporarily or permanently. Handle power

cable, electrical cables and conduits, terminal box covers and

motor frames with great care.

CCn : Operating type: CCN

LED : Light Emitting Diode

LOFF : Operating type: Local Off

L-On : Operating type: Local On mode

L-Sc : Operating type: Local On following a time schedule

MASt : Operating type: master unit (master/slave assembly)

rEM : Operating type: by remote contacts

SCT : Saturated Condensing Temperature

SIO : Sensor Bus (internal communication bus linking the

basic board to the slave boards)

Fanstart-up:

ATTENTION: In accordance with the operating conditions

the fans can be cleaned periodically. A fan can start at any

time, even if the unit has been shut down.

SST : Saturated Suction Temperature

TXV : Thermal Expansion Valve

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3 - HARDWARE DESCRIPTION

3.1 - General

3.2 - Electrical supply to boards

All boards, except the PD-RCPM board, are supplied from a

common 24 V a.c. supply referred to earth.

Figure 1

CAUTION: Maintain the correct polarity when connecting

the power supply to the boards, otherwise the boards may be

damaged.

In the event of a power supply interrupt, the unit restarts

automatically without the need for an external command.

However, any faults active when the supply is interrupted are

saved and may in certain cases prevent a circuit or unit from

restarting.

3.3 - Light emitting diodes on boards

All boards continuously check and indicate the proper

operation of their electronic circuits. A light emitting diode

(LED) lights on each board when it is operating properly.

•

The red LED flashing for a 2 second period on the NRCP-

BASE board indicates correct operation. A different rate

indicates a board or a software failure.

On dual-circuit units or units equipped with optional

board, the green LED flashes continuously on all boards

to show that the board is communicating correctly over its

internal bus. If the LED is not flashing, this indicates a

SIO bus wiring problem.

•

Legend

CCN connector

Red LED, status of the board

Green LED, communication bus SIO

Orange LED, communication bus CCN

Remote master board customer control connection contacts

Remote slave board customer control connection contacts

Master board customer connection relay outputs

Slave board customer connection relay outputs

Master NRCP basic board

•

The orange LED of the master board flashes during any

communication via the CCN bus.

3.4 - The sensors

Pressure sensors

10 Slave NRCP basic board

Two types of electronic sensors are used to measure the suction

and discharge pressure in each circuit.

The control system consists of an NRCP-BASE board for

single-circuit units and two NRCP-BASE boards (a master and

a slave board) for dual-circuit units. Heat pump units equipped

with optional additional heater stages use an additional board,

type PD-AUX. All boards communicate via an internal SIO bus.

The NRCP-BASE boards continuously manage the information

received from the various pressure and temperature probes. The

NRCP-BASE master board incorporates the program that

controls the unit.

Thermistors

The evaporator water sensors are installed in the entering and

leaving side. The outdoor temperature sensor is mounted below

the control box. An optional water system temperature sensor

can be used for master/slave assembly control (in the case of

leaving water control).

In heat pump units a sensor placed on an air heat exchanger

pipe ensures defrost operation.

The user interface consists of two display blocks with up to 26

LEDs and 16 buttons (according to unit type). It is connected

to the main basic board and gives access to a full array of

control parameters.

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3.5 - The controls

3.6 - Connections at the user's terminal block

Evaporator pumps

3.6.1 - General description

The controller can regulate one or two evaporator pumps and

takes care of automatic change-over between pumps.

The contacts below are available at the user's terminal block on

the NRCP-BASE board (see figure 1). Some of them can only

be used if the unit operates in remote operating type (rEM).

The following table summarises the connections at the user’s

terminal block.

Evaporator heater

It protects the evaporator (and the pipe heater for units without

pump) against freezing if the unit is off.

Boiler

This relay output authorises start/stop of a boiler.

Condensate defrost heater

This heater is used for heat pump units and is located at the

bottom of the air heat exchanger of each circuit. It prevents ice

build-up, if defrost cycles are initiated at low outdoor

temperatures.

SINGLE-CIRCUIT UNITS

Description

Connector/channel

J3 / CH24

Terminal

30 - 31

Board

Remarks

Alarm relay output

Boiler relay output

NRCP-BASE

Indicates alarms

Volt-free contact 24 V a.c.

48 V d.c. max, 20 V a.c. or

V d.c., 3 A max, 80 mA min,

external power supply.

J3 / CH25

37 - 38

Boiler start/stop control output.

See section 5.13.

Connector: 4 pin

WAGO 734-104 pitch 3.5.

One per board needed.

Contact 1:

start/stop/heat/cool

J4 / CH8

J4 / CH9

32 - 33

63 - 64

NRCP-BASE

The contacts are used for unit start/stop and

heat/cool control. They are only taken into

account if the unit is under remote operation

control (rEM).

24 V a.c., 20 mA

Connector: 8 pin WAGO

734-168, pitch 3.5

Contact 2:

start/stop/heat/cool

See the description of these contacts in

sections 3.6.2 and 3.6.3.

Contact 3:

demand limit selection or

setpoint selection

J4 / CH10

73 - 74

NRCP-BASE

Depending on the configuration, this dry

contact can be used for remote setpoint

selection or demand limit selection (see

sections 4.3.11.3 and 3.6.4).

- The remote setpoint selection contact is

only taken into account if the unit is in

remote control operating type.

- The remote demand limit selection contact

is active whatever the operating type of the

unit.

User safety loop input

Connection to CCN

J4 / CH11a

34 - 35

NRCP-BASE

This contact is mounted in series with the

water flow control contact. It can be used for

any customer safety loop that requires that

the unit is stopped, if it is open.

If it is unused this contact must be bridged.

J12

1 - 2 - 3

An RS-485 bus is used for connection to the

CCN.

Connector: 3 pin WAGO

231-303, pitch 5.08

- Pin 1: signal +

- Pin 2: ground

- Pin 3: signal -

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DUAL-CIRCUIT UNITS

Description

Connector/channel

Terminal

Board

Remarks

Alarm relay output

circuit A

J3 / CH24

30A - 31A

Master NRCP- Indicates alarms/alerts for circuit A*

BASE

Volt-free contact 24 V a.c.

48 V d.c. max, 20 V a.c. or

V d.c., 3 A max, 80 mA min,

external power supply.

Alarm relay output

circuit B

J3 / CH24

J3 / CH25

30B - 31B

37 - 38

Slave NRCP-

BASE

Indicates alarms/alerts for circuit B*

Boiler relay output

Master NRCP- Boiler start/stop control output.

BASE See section 5.13.

Connector: 4 pin

WAGO 734-104 pitch 3.5.

One per board needed.

Contact 1:

start/stop/heat/cool

J4 / CH8

J4 / CH9

32 - 33

63 - 64

Master NRCP- The contacts are used for unit start/stop and

24 V a.c., 20 mA

BASE

heat/cool control. They are only taken into

account if the unit is under remote operation

Connector: 8 pin WAGO

734-168, pitch 3.5

Contact 2:

start/stop/heat/cool

Master NRCP- control (rEM).

BASE

See the description of these contacts in

sections 3.6.2 and 3.6.3.

Contact 3:

demand limit selection

J4 / CH10

J4 / CH8

73 - 74

75 - 76

65 - 66

Master NRCP- These dry contacts are used for demand

BASE

limit selection. See description of these

contacts in section 3.6.5.

Contact 4:

demand limit selection

Slave

NRCP-BASE

The remote demand limit selection contact is

active whatever the operating type of the

unit.

Contact 5:

setpoint selection

Slave

NRCP-BASE

These dry contacts are used for setpoint

selection.

They are only taken into account if the unit is

in remote control operating type (rEM).

Control contact 6:

setpoint selection

J4 / CH9

67 - 68

34 - 35

Slave

NRCP-BASE

See the description of these contacts in

sections 3.6.6.

User safety loop input

J4 / CH11a

Master

NRCP-BASE

This contact is mounted in series with the

water flow control contact. It can be used for

any customer safety loop that requires that

the unit is stopped, if it is open.

If it is unused this contact must be bridged.

Connection to CCN

J12

1 - 2 - 3

Master

NRCP-BASE

An RS-485 bus is used for connection to the

CCN.

- Pin 1: signal +

- Pin 2: ground

- Pin 3: signal -

Connector: 3 pin WAGO

231-303, pitch 5.08

The operation of these relays can vary depending on the user configuration. See section ‘Description of the User 2 configuration sub-menu’.

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3.6.2 - Volt-free contact on/off/cooling/heating without

multiplexing

If the automatic heating/cooling changeover function is not

selected (see sections 4.3.11.3, 5.1 and 5.2) the operation of

contacts 1 and 2 is as follows:

3.6.5 - Demand limit volt-free contact for dual-circuit units

On dual-circuit units the operation of the demand limit

selection contacts is multiplexed. The demand limit setpoints are

adjustable in the setpoint menu (see section 4.3.8).

100%

Limit 1

Limit 2

Limit 3

(no limit)

OFF

Open

ON cooling

Closed

ON heating

Closed

Contact 3 Open

Contact 4 Open

Closed

Open

Closed

Contact 1

Contact 2

Closed

Open

Closed

Contact status not significant

3.6.6 - Water setpoint selection volt-free contact with

multiplexing for dual-circuit units

3.6.3 - Volt-free contact on/off/cooling/heating with

multiplexing

If the automatic heating/cooling changeover function is

selected (see sections 4.3.11.3, 5.1 and 5.2) the operation of

contacts 1 and 2 is multiplexed:

On dual-circuit units the operation of the cold water or hot

water setpoint selection contacts is multiplexed. The set-points

are adjustable in the setpoint menu (see section 4.3.8). Auto

means that the active setpoint is determined by the setpoint

schedule (see section 5.6.1).

OFF

Contact 1 Open

Contact 2 Open

ON cooling

Closed

ON heating

Closed

ON auto

Open

Cooling mode

Open

Closed

Setpoint 1

Setpoint 2

Setpoint 3

Auto

Contact 5

Contact 6

Open

Closed

Open

Closed

NOTE: The automatic changeover function (ON auto) selects

the cooling or heating mode based on the outdoor

temperature (see section 5.2).

Heating mode

Setpoint 1

Setpoint 2

Setpoint 3

Auto

Contact 5

Contact 6

Open

Closed

Open

Closed

3.6.4 - Demand limit or setpoint volt-free contact for single-

circuit units

On single-circuit units contact 3 determines the selection of

demand limit or setpoint, based on the configuration (see User

Configuration 1 menu).

Demand limit selection

Setpoint selection

100%

Limit 1

Setpoint 1

Setpoint 2

(no limit)

Contact 3 Open

Closed

Open

Closed

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4 - SETTING UP PRO-DIALOG CONTROL

4.1 - Local interface general features

MAIN INTERFACE

SUMMARY INTERFACE

PRO-DIALOG JUNIOR INTERFACE

PRO-DIALOG PLUS INTERFACE

MENU BLOCK

The local interface enables a number of operating parameters to

be displayed and modified.

•

A two-digit display showing the number of the item

selected.

A four-digit display showing the contents of the item

selected.

LEDs and buttons for unit start/stop, menu selection,

menu item selection and value adjustment.

The interface consists of two distinct parts: the main interface

(left-hand section) and the summary interface (right-hand section).

Main interface

It gives access to all PRO-DIALOG data and operating functions. PRO-DIALOG Junior interface: On some units the local user

It consists of:

interface consists only of a simplified main interface (left-hand

section) that is identical to the main interface described below,

but does not include the menu block diodes.

MAIN INTERFACE

BUTTON

NAME

DESCRIPTION

Permits the selection of a main menu. Each main menu is represented by an icon. The icon is lit if active.

Up arrow

Down arrow

Enter

Permits scrolling through the menu items (in the two-digit display). If the modification mode is active this button authorises

increase of the value of any parameter.

Permits scrolling through the menu items (in the two-digit display). If the modification mode is active this button authorises

decrease of the value of any parameter.

Gives access to the modification mode, validates a modification or displays expanded item description.

Start/stop

Authorises start or stop of the chiller in local mode or modification of its operating type.

MAIN INTERFACE MENU LED'S

LED*

NAME

DESCRIPTION

INTERFACE DISLAY

INFORMATION menu

Displays the general operating parameters for the unit.

Information

TEMPERATURES menu

PRESSURES menu

Displays the unit operating temperatures.

Displays the unit operating pressures.

Temperatures

Pressures

kPa

SETPOINTS menu

INPUTS menu

Displays the unit setpoints and enables them to be modified.

Displays the status of the unit digital and analogue inputs.

Setpoints

Inputs

OUTPUTS/TESTS menu

Displays the status of the unit outputs and enables them to be tested.

Outputs

CONFIGURATIONS menu

ALARMS menu

Displays the unit configuration and enables it to be modified.

Displays active alarms.

Confguration

Alarms

ALARMS HISTORY menu

Displays the history of the alarms.

History

RUNTIMES menu

Displays the operating times and number of starts for the unit and the

compressors.

Runtimes

* Not available on the PRO-DIALOG Junior interface.

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The summary interface (right hand section) includes a mimic

diagram of the unit, together with push-buttons and LEDs. It

gives quick access to the main operating parameters of the unit.

The following operating types can be selected using the

Start/Stop button:

OPERATING TYPES

4 DIGIT DISPLAY

LOFF

DESCRIPTION

SUMMARY INTERFACE LEDs*

Local Off. The unit is halted in local mode.

LED

INDICATION WHEN LIT

L-On

Local On. The unit is in local control mode and is

authorised to start.

Green LED:

The unit is authorised to start or is already running

L-Sc*

Local On - timer control. The unit is in local control

mode. It is authorised to start if the period is occupied.

If the timer program for unit operation is unoccupied,

the unit remains shut down until the period becomes

occupied.

Red LED:

- Lit: circuit A or unit shut down by alarm

- Flashing: circuit A or unit running with alarm present

Red LED:

CCN*

rEM*

CCN. The unit is controlled by CCN commands.

- Lit: circuit B or unit shut down by alarm

- Flashing: circuit B or unit running with alarm present

Remote. The unit is controlled by remote control

contacts.

Red LED:

Water flow switch default or user safety lock open.

MAST*

Master Unit. The unit runs as a master in a two unit

lead/lag arrangement.This is displayed if the unit is

configured for master/slave control.

Green LED:

The evaporator pump is running.

Legend

Yellow LEDs:

Displayed if the configuration requires it.

From top to bottom - start/stop status of compressor A1, A2 and A3

or B1, B2 and B3. Flashing LED indicates that the circuit is in the

protection or defrost mode (A or B).

Section 5.1 gives a more detailed description of the commands to start/stop

the unit, analysed by operating type.

Green LED:

The unit operates in heating mode.

4.2.2 - Stopping the unit in local mode

The unit can be stopped in local mode at any time by pressing

the Start/Stop button.

Green LED:

The unit operates in cooling mode.

* Not available on the PRO-DIALOG Junior interface.

TO STOP THE UNIT

SUMMARY INTERFACE PUSH BUTTONS*

BUTTON DISPLAY

BUTTON

ACTION

2-DIGIT DISPLAY 4-DIGIT DISPLAY

Press the Start/Stop

button for less than

4 seconds (one short

press is enough).

LOFF

Blue button: evaporator leaving or entering water temperature in °C

Gray button: outdoor air temperature in °C

Control point (setpoint + reset) in °C

If the button is

released, the unit stops

without the need for

further action.

Press 1: circuit A/B discharge pressure in kPa

Press 2: circuit A/B saturated condensing temperature in °C

4.2.3 - Starting unit and selecting an operating type

The unit can be started in local mode, or unit operating type

can be changed at any time using the Start/Stop button. In the

example that follows, the unit is stopped (LOFF) and the user

wants to start the unit in local mode.

Press 1: circuit A/B suction pressure in kPa

Press 2: circuit A/B saturated suction temperature in °C

Press 1: compressor A1/B1 operating hours in h/10 or h/100

Press 2: compressor A2/B2 operating hours in h/10 or h/100

Press 3: compressor A3/B3 operating hours in h/10 or h/100

* Not available on the PRO-DIALOG Junior interface.

START UP WITH THE PREVIOUSLY USED OPERATING TYPE WHEN THE UNIT

IS STOPPED IN LOCAL MODE (LOFF)

4.2 - Unit start/stop control

BUTTON ACTION

2-DIGIT

4-DIGIT

DISPLAY

LOFF

DISPLAY

4.2.1 - Description

The unit start/stop can be controlled by one of the following

methods:

The unit is in local stop mode. The

previously used operating type is local on

(L-ON)

Press the Start/Stop button for 4 seconds

(one short press-down is sufficient). L-ON

illuminates immediately. "C" flashes in the

2-digit display to show that the controller is

awaiting confirmation.

L-On

•

Locally on the actual unit (Local control type)

By remote control with the aid of user contacts (remote

control type)

By CCN control with the aid of the CCN (CCN control

type)

•

Press the Enter button to confirm the

operating type. "t" is displayed in the 2-digit

display to indicate the operating type

selected. If the Enter button is not pressed

soon enough, the controller will cancel the

change and remain in the stop mode.

The main interface includes a Start/Stop button which can be

used to stop or start the unit in the local operating type or to

select the remote or CCN operating type.

The available operating types are described in the following

table.

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CHANGING THE OPERATING TYPE

BUTTON ACTION

4.3.3 - Modifying the value of a parameter/access to a sub-

2-DIGIT

DISPLAY

4-DIGIT

DISPLAY

LOFF

Press the Enter button for more than 2 seconds to enter the

modification mode or to select a sub-menu. This lets you correct

the value of an item or select a sub-menu with the aid of the up

and down Arrow buttons (if you are authorised to overwrite the

item concerned). When modification mode is activated, the LED

for the main menu to which the item belongs as well as the 2-

digit display flash in the menu block. Once the required value is

obtained, press the Enter button again to validate the change or

to access the sub-menu. The LED for the menu to which the

item and the 2-digit display belong then stops flashing,

indicating that modification mode no longer applies.

Continually press the operating type

selection button for more than 4 seconds.

Hold down the Start/Stop button.

The available operating types are displayed

one by one until the button is released.

L-On

L-Sc

rEM

Release the Start/Stop button if the

operating type you want is displayed (in this

example L-On). "C" flashes in the 2-digit

display to show that the controller is

awaiting confirmation.

L-On

Press the Enter button to confirm the

L-On

In modification mode, the value to be modified increases or

decreases in steps of 0.1 every time you press the Arrow

buttons. Holding one of these buttons down increases the rate

of increase or decrease.

operating type selected (in this example:

L-On). "t" is displayed in the 2-digit display

to indicate the operating type selected. If the

Enter button is not pressed soon enough,

the controller will cancel the change and

continue to use the previous operating type.

NOTE: The access to a sub-menu may require entering a

password. This is automatically requested. See section

4.3.11.2.

4.3 - Menus

4.3.1 - Selecting a menu

The following example shows how to modify the value of item

1 in the Setpoint menu.

The MENU button authorises you to select a menu from the 10

main menus that are available. Each time you press this button

one of the 10 LEDs lights up in turn alongside each of the

icons representing a main menu. The active menu is the one

against which the LED is lit. If a menu is empty then its LED is

not lit. To scroll quickly through the menus, hold the MENU

button down.

4.3.2 - Selecting a menu item

The up and down Arrow buttons let you scroll through the

menu items. Menu item numbers are displayed in the two-digit

display. The item number increases or decreases every time you

press the up or down Arrow button. The menu items that are not

in use or incompatible with the configuration are not displayed.

The value or status associated with the active item is displayed

in the four-digit display. To scroll quickly through the items,

hold the up or down Arrow button down.

The following example shows how to access item 3 in the

Pressures menu.

SELECTING A MENU ITEM

OPERATION

PRESS

BUTTON

MENU LED

ITEM NUMBER

2-DIGIT

DISPLAY

Press the MENU button until the

LED marked PRESSURE lights.

Note: On the PRO-DIALOG Junior

interface the menu LEDs are not

available. Instead, each time the

menu button is pressed, the name

of the active menu is dsplayed in

the 4-digit display. In this example,

press the MENU button until

PRESSURE is displayed in the

4-digit display.

kPa

Press one of the Arrow buttons

until the two-digit display shows 3

(item number 3).

kPa

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4.3.4 - Expand display

Pressing the Enter button causes a 23 character text expansion to

be scrolled across the four-digit display. All user menus

provide an expansion of the current displayed parameters. If

the expansion is complete the four-digit display reverts to item

value. This function can be inhibited through the User

Configuration menu.

MODIFYING THE VALUE OF A PARAMETER

OPERATION

PRESS BUTTON

MENU LED

ITEM NUMBER

ITEM VALUE

2-DIGIT DISPLAY

4-DIGIT DISPLAY

Hold on the MENU button until the LED for SETPOINT lights.

PRO-DIALOG Junior interface: Press the menu button, until SETPOINTS is

displayed in the 4-digit display

SEtPoint

Press one of the Arrow buttons until the two-digit display shows 1

(item number 1- cooling setpoint 2).

The value for setpoint 2 is displayed in the four-digit display (6.0°C in this

example).

6.0

Press the Enter button for more than 2 seconds to enable the value associated

with item 1 to be modified.

The Setpoint menu LED and the two-digit display flash indicating that modification

mode is active.

5.9

5.8

Keep pressing the Down Arrow button until the value 5.7 is displayed in the four-

digit display. The Setpoint menu LED and the two-digit display keep flashing.

5.7

Press the Enter button again to validate the change.The new setpoint is 5.7°C.

The Setpoint menu LED and the two-digit display stop flashing, indicating that

modification mode no longer applies.

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MENU STRUCTURE

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Menu tree structure

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4.3.5 - Description of the Information menu

INFORMATION MENU (3)

ITEM FORMAT

UNITS DESCRIPTION

Automatic display mode. It cycles through the following displays:

±nn.n

°C

Controlled water temperature: temperature of the water that the unit tries to maintain at the control point.

Unit operating type

LOFF

L-On

L-Sc

CCn

rEM

Local Off

Local On

Local On - based on unit clock. Displayed if the CCN/clock board is installed.

CCN Control. Displayed if the CCN/clock board is installed.

Remote Control

Master unit

MASt

Unit status

OFF

rEADY

dELAY

Off: Unit is stopped and not authorised to start.

Ready: Unit is authorised to start

Delay: Unit is in delay at start-up.This delay is active after the unit has been switched on. The delay can be

configured in the User Configuration menu.

Stopping: Unit is currently stopping.

On: Unit is running or authorised to start.

Fault shutdown.

Limit: The operating conditions do not allow total unit operation.

Defrost: One circuit is in defrost mode.

StOPPing

running

triPout

OvErridE

dEFrOSt

Unit occupied/unoccupied status

Occupied: Unit in occupied mode

Unoccupied: Unit in unoccupied mode

OCCUPIEd

UNOCCUPIEd -

Heating/cooling operating mode

COOL

HEAT

StAndbY

BotH

Cooling: Unit operates in cooling mode

Heating: Unit operates in heating mode

Standby: Unit is in auto cooling/heating changeover mode, and is in standby

Both: The unit operates in cooling (compressors) and heating (boiler). Only with HSM operation.

ALArM

ALErt

Alarm mode

Alarm: Unit is totally stopped because of failure.

Alert: Unit is in failure but not completely stopped.

Master/Slave status

MAStEr

SLAvE

Master:The master/slave control is active and the unit is the master

Slave: The master/slave control is active and the unit is the slave

1 [1]

2 [2]

Active mode codes. Each active mode is displayed in turn. This Item is masked when nil. Pressing the enter button when a mode

code is displayed causes a character text expansion to be scrolled accross the four-digit display. See the description in the following

table

This item indicates the current unit occupied/unoccupied mode. Displayed if the CCN/clock board is installed.

occu

unoc

Forc

Occupied

Unoccupied

The value is displayed in turn with 'Forc' when the unit is in CCN control and if this variable if forced through CCN.

nn.n

minutes Start-up delay. This item indicates the minutes left before the unit can be started. This delay at start-up is always active after the unit

has been switched on.The delay can be configured in the User Configuration 1 menu.

4 [2]

Heating/cooling on selection: This item is accessible in read/write, if the unit is in local control mode. It is only displayed, if the unit is

in LOFF, L-On or L-Sc operating type. Displayed for heat pumps or if the unit controls a boiler.

HEAt

COOL

Auto

Heating mode selection

Cooling mode selection

Automatic heating/cooling mode changeover selection. Only displayed if the auto changeover function is selected (User Configuration

1 menu).

5 [2]

Heating/cooling mode. This item indicates whether the unit is in cooling or heating. Displayed if the unit controls a boiler.

HEAt

COOL

StbY

both

Heating

Cooling

Standby: Unit is in auto cooling/heating changeover mode, and is in standby.

Both:The unit operates in cooling (compressors) and heating (boiler). Only with HSM operation.

The value is displayed in turn with 'Forc' when the unit is in CCN control and if this variable if forced through CCN.

Forc

nnn

Total active capacity of unit. It is the percentage of compressor capacity used by the unit.

Total active capacity of circuit A. It is the percentage of compressor capacity used by on circuit A..

Total active capacity of circuit B. It is the percentage of compressor capacity used by on circuit B. Dual-circuit units only.

Active electric heating stages. Only displayed for heat pumps and if the unit controls additional electric heating stages.

8 [2]

9 [2]

nnn

Present demand limit. This is the authorised operating capacity of the unit. See section 5.7.

Forc

The value is displayed in turn with 'Forc' when the unit is in CCN control and if this variable if forced through CCN.

11 [2] nnn

Present lag chiller demand limit. Displayed when the master/slave control is selected.

12 [2]

Setpoint select in local mode. This point is read/write accessible. Displayed only when the unit is LOFF, L-On or L-Sc operating type.

SP-1

SP-1 = cooling/heating setpoint 1

SP-2

SP-3

AUtO

SP-2 = cooling/heating setpoint 2

SP-3 = heating setpoint 3

AUtO = active setpoint depends on schedule 2 (setpoint selection schedule). See section 5.6.1 & 4.3.11.6.

13 [2]

Setpoint occupied mode. Displayed if the CCN/clock board is installed.

Occupied: cooling setpoint 1 is active

Unoccupied: cooling setpoint 2 is active

occu

unoc

Forc

The value shall be displayed in turn with 'Forc' when the unit is in CCN control and if this variable if forced through CCN.

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INFORMATION MENU (3) continued

ITEM

FORMAT UNITS

DESCRIPTION

±nn.n

°C

Active setpoint. This is the current cooling/heating setpoint: it refers to cooling setpoint 1 or cooling/heating setpoint 2. See section

5.6.1.

±nn.n

Forc

Control point. This is the setpoint used by the controller to adjust the temperature of the leaving or entering water (according to

configuration).

Control point = active setpoint + reset. See section 5.6

The value is displayed in turn with 'Forc' when the unit is in CCN control and if this variable if forced through CCN.

±nn.n

Controlled water temperature. Water temperature that the unit tries to maintain at the control point.

This item is masked when nil.

This item is displayed in certain unit configurations only.

Access to this menu is read-only except for item 10 that can be forced when the unit is in Local operating type.

DESCRIPTION OF OPERATING MODES (ITEM 1 OF THE INFORMATION MENU)

MODE # MODE NAME

DESCRIPTION

Delay at start-up active

The delay at start-up operates after the unit has been switched on. If the delay has not expired, the mode is

active. The delay is configured in the User Configuration 1 menu.

2nd cooling/heating setpoint active

3rd heating setpoint active

Setpoint reset active

The second cooling/heating setpoint is active. See section 5.6.1

The third heating setpoint is active. See section 5.6.1

In this mode, the unit uses the reset function to adjust the leaving water temperature setpoint. See section 5.6.

Auto heating/cooling changeover

active

If the unit is in auto mode, the heating/cooling changeover is automatic, based on the outdoor temperature. See

section 5.2.

Demand limit active

Ramp loading active

In this mode, the demand at which the unit is authorised to operate is limited. See section 5.7.

Ramp loading is active. In this mode, the rate of water temperature drop or rise (heating mode) in °C/min is limited

to a preset value in order to prevent compressor overloading. Ramp function must be configured (see User

Configuration 1 menu). Ramp values can be modified (see Setpoint menu).

Water or air heat exchanger

heater active

The water or air heat exchanger heater is active. See section 5.5.

Evaporator pump reversal in effect

Evaporator pump periodic start

The unit is fitted with two evaporator water pumps and reversal between pumps is in effect. See section 5.3.

The unit is stopped and the pump is started each day at 14.00 p.m. for two seconds. This function needs to be

configured in the User Configuration 1 menu. See section 5.3 & 4.3.11.3.

Night condensing mode

The night mode is active. Fan runs at low speed (if permitted by operating conditions) and unit capacity can be

limited. See section 5.8 & 4.3.11.3.

12, 13

14, 15

Low suction temperature protection

High pressure protection

12 = circuit A & 13 = circuit B. Protection for evaporator low suction temperature circuit is active. In this mode,

circuit capacity is not authorised to rise and the circuit can be unloaded.

14 = circuit A & 15 = circuit B.The unit is in cooling or heating mode.The circuit is in high pressure protection

mode because the HP protection threshold has been exceeded. Circuit has been unloaded and the circuit

capacity is not authorised to rise.

16, 17

Defrost

16 = circuit A & 17 = circuit B. The unit is in heating mode, and the defrost sequence is active on the relevant

circuit.

Low water entering temperature

protection in heating mode

The unit is in heating mode and compressor start is not authorised, as the entering water temperature is below

10°C.

19, 20

21, 22

Hot gas protection in heating mode

19 = circuit A & 20 = circuit B.The unit is in heating protection mode and hot gas discharge protection is active. In

this mode, the circuit capacity cannot increase, and the circuit may be unloaded or go into defrost mode.

Low suction temperature protection

in heating mode

21 = circuit A & 22 = circuit B. The unit is in heating mode and low suction temperature protection is active. In this

mode, circuit capacity is not authorised to rise and the circuit can be unloaded or go into defrost mode.

Boiler active

The unit controls a boiler and this is operating. See section 5.13.

Electric heating stages active

Unit in SM control

The unit controls additional electric heating stages, and these are operating. See section 5.12.

Unit is in control of a System Manager (FSM, CSM III or HSM).

Master/slave link active

Low outside temperature protection

Unit is connected to a secondary unit by a master slave link and the master/slave modes are active.

The unit is in heating mode, and compressor start-up is not permitted, when the outside air temperature is lower

than the value configured in item 12 of the User 1 configuration menu. See the relevant section.

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4.3.6 - Description of the Temperatures menu

4.3.7 - Description of the Pressures menu

TEMPERATURES MENU [2]

PRESSURES MENU [2]

ITEM FORMAT UNITS COMMENTS

ITEM

FORMAT UNITS

COMMENTS

±nn.n

°C

Water heat exchanger entering water tempera-

ture

nnnn

kPa

Discharge pressure, circuit A.

Relative pressure.

±nn.n

°C

Water heat exchanger leaving water tempera-

ture

nnn

Suction pressure, circuit A.

Relative pressure.

±nn.n

°C

Outdoor temperature

2 [1]

3 [1]

nnnn

nnn

Discharge pressure, circuit B.

Relative pressure.

Saturated discharge temperature, circuit A

Saturated suction temperature, circuit A

Saturated discharge temperature, circuit B

Saturated suction temperature, circuit B

Defrost temperature, circuit A

Suction pressure, circuit B.

Relative pressure.

5 [1]

6 [1]

7 [1]

8 [1]

9 [1]

This item is displayed in certain unit configurations only.

Access to this menu is read-only

Defrost temperature, circuit B

Chilled water system temperature. Used for

master/slave control.

This item is displayed in certain unit configurations only

Access to this menu is read-only.

4.3.8 - Description of the Setpoints menu

SETPOINTS MENU [2]

ITEM

FORMAT UNITS

RANGE

COMMENTS

±nn.n

nnn

°C

See table below

3.8 to 50

This item lets you display and modify Cooling setpoint 1*

This item lets you display and modify Cooling setpoint 2*

This item lets you display and modify Heating setpoint 1*, only displayed for heat pumps.

This item lets you display and modify Heating setpoint 2*, only displayed for heat pumps.

This item lets you display and modify Heating setpoint 3*, only displayed for heat pumps.

3 [1]

4 [1]

5 [1]

nnn

nn.n

±nn.n

Automatic changeover threshold, cooling mode. This item lets you display and modify the outdoor

temperature threshold at which the unit changes over in cooling mode. See section 5.2. Displayed only if

the auto cooling/heating changeover function is selected.

6 [1]

±nn.n

°C

0 to 46

Automatic changeover threshold, heating mode. This item lets you display and modify the outdoor

temperature threshold at which the unit changes over in heating mode. Displayed only if the auto cooling/

heating changeover function is selected and if the unit is a heat pump.The heating threshold must be

3.8°C below the cooling threshold, otherwise the new setpoint will be rejected.

nnn

0 to 100

Demand limit 1 setpoint. Limitation by volt-free contact.This item is used to define the maximum

capacity that the unit is authorised to use, if the demand limit contact(s) activate limit 1. Contact control

depends on the unit type and configuration. See sections 3.6.4 and 3.6.5.

8 [1]

Demand limit 2 setpoint. Limitation by volt-free contact.This item is used to define the maximum

capacity that the unit is authorised to use, if the demand limit contact(s) activate limit 2. Contact control

depends on the unit type and configuration. Displayed and used only for dual-circuit units. See section

3.6.5 for the contact control description.

9 [1]

nnn

0 to 100

Demand limit 3 setpoint. Limitation by volt-free contact.This item is used to define the maximum

capacity that the unit is authorised to use, if the demand limit contact(s) activate limit 3. Displayed and

used only for dual-circuit units. See section 3.6.5 for the contact control description.

±nn.n

°C/min

0.1 to 1.1

Cooling or heating ramp loading rate. This parameter is only accessible if the ramp function is

validated in the User Configuration 1 menu. This item refers to the rates of temperature drop in °C in the

evaporator. When capacity loading is effectively limited by the ramp, mode 7 is active.

11 [1]

12 [1]

13 [1]

14 [1]

15 [1]

16 [1]

±nn.n

°C

See table below

-16 to 16

Zero reset threshold, cooling mode**

Full reset threshold, cooling mode**

Full reset value, cooling mode**

Zero reset threshold, heating mode**

Full reset threshold, heating mode**

Full reset value, heating mode**

This item is displayed in certain unit configurations only.

All points contained in this table can be modified.

Those setpoints can be used for entering or leaving water temperature control. By default the unit controls the evaporator entering fluid temperature.

Leaving fluid temperature control requires a parameter modification in the Service Configuration menu.

** These parameters are only accessible when reset based on OAT or delta T has been selected in the User Configuration 1 menu. See section 4.3.11.3 & 5.6.2.

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LEAVING WATER TEMPERATURE CONTROL

SETPOINT - °C

RESET THRESHOLDS IN COOLING OR HEATING MODE

R-22/R-407C

Reset threshold

Zero

Full

Minimum cooling value

Water

Reset based on outdoor

air temperature

-10 to 51 °C

5.0

Medium brine

Brine

0.0

Reset based on

Delta T

0 to 11.1 °C

-10.0

20.0

6.0

20.6

56.1

48.0

Maximum cooling value

Feedback setpoint, cooling

Minimum heating value

Maximum heating value

Feedback setpoint heating

ENTERING WATER TEMPERATURE CONTROL

SETPOINT - °C

R-22/R-407C

Minimum cooling value

Water

10.0

6.1

Medium brine

Brine

-3.9

26.1

12.0

14.4

50.0

42.0

Maximum cooling value

Feedback setpoint, cooling

Minimum heating value

Maximum heating value

Feedback setpoint heating

4.3.9 - Description of the Inputs menu

INPUTS MENU [2]

ITEM

FORMAT

UNITS

COMMENTS

oPEn/CLoS

Remote contact 1 status.

If the auto cooling/heating changeover function is not selected (User Configuration 1), this contact is used to start and

stop the unit. If the auto cooling/heating changeover function is selected, this contact is multiplexed with contact 2 to

permit starting and stopping the unit and the selection of heating/cooling/auto.This contact is only valid, if the unit is in

the remote operating control (rEM) mode. See section 3.6 for the description of the connections of this contact.

1 [1]

oPEn/CLoS

Remote contact 2 status.

If the auto cooling/heating changeover function is not selected (User Configuration 1), this contact is used to select the

heating or cooling mode. If the auto cooling/heating changeover function is selected, this contact is multiplexed with

contact 1 to permit starting and stopping the unit and the selection of heating/cooling/auto.This contact is only valid, if

the unit is in the remote operating control (rEM) mode. See section 3.6 for the description of the connections of this

contact.

Remote contact 3 status.

The operation of this contact depends on the unit type.

Single-circuit unit: this contact can be used either to limit unit demand or to select a setpoint, as described in User

Configuration. If this contact is used for selecting a setpoint it is only active if the unit is in the remote operating control

mode. If the contact is used to limit the demand of the unit, it is active in all operating types.

Open contact: unit capacity is not limited or unit control is based on setpoint 1.

Closed contact: unit capacity is limited at limit setpoint 1 or unit control is based on setpoint 2.

See section 4.3.11.3 for the configuration of contact 3 - section 5.6.1 for the description of the setpoint selection -

section 5.7 for the description of the demand limit function and 3.6 for the description of the connection of contact 3 for

single-circuit units.

Dual-circuit units: this contact is multiplexed with contact 4 to permit the selection of a demand limit point.This

contact is active in all operating types. See section 3.6.5 for the description of this contact and section 5.7 for the

description of the demand limit function.

oPEn/CLoS

Remote contact 4 status.

This contact is only used for dual-circuit units: this contact is multiplexed with contact 3 to permit selection of a

demand limit value. This contact is active in all operating types. See section 3.6.5 for the description of this contact

and section 5.7 for the description of the demand limit function.

4 [1]

5 [1]

Remote contact 5 status.

This contact is only used for dual-circuit units: this contact is multiplexed with contact 6 to permit selection of a

setpoint. This contact is only active in the remote operating control mode. See section 3.6.6 for the description of this

contact and section 5.6.1 for the description of the setpoint selection function.

Remote contact 6 status.

This contact is only used for dual-circuit units: this contact is multiplexed with contact 5 to permit selection of a

setpoint. This contact is only active in the remote operating control mode. See section 3.6.6 for the description of this

contact and section 5.6.1 for the description of the setpoint selection function.

6 [1]

oPEn/CLoS

Interlock status. When this contact opens the unit stops or is prevented from starting and an alarm is created. This

contact is used to control the water flow. In addition, a customer safety device can be connected in series with this

contact (see section 3.6).

Water pump run contact status. When this contact opens while an evaporator pump has received a command to be

on then a pump failure alarm is tripped.

8 [1]

9 [1]

b₁b₂b₃

Compressor feedback contacts, circuit A

Compressor feedback contacts, circuit B

b₁= feedback A1

b₁= feedback B1

b₂= feedback A2

b₂= feedback B2

b₃= feedback A3

b₃= feedback B3

This item is displayed in certain unit configurations only

Access to this menu is read-only.

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4.3.10 - Description of the Outputs/Tests menu

4.3.10.1 - General

This menu displays the status of the controller outputs. More-

over, when the machine is fully stopped (LOFF) the outputs

can be activated for manual or automatic tests (the access to the

tests is password controlled).

4.3.10.2 - Menu description

OUTPUTS STATUS & TESTS MENU [2] [3]

ITEM

FORMAT

UNITS

DESCRIPTION

b₁b₂b₃

Circuit A compressors, command status

b₁= compressor A1

tESt

b₂= compressor A2

FAIL

Good

b₃= compressor A3

In test mode, the Arrow buttons display 001, 010 and 100 in succession, so as to force the status of the compressor outputs

in turn. During the test phase, power to the compressor is switched on for 10 seconds only. It is then not possible to restart the

compressor for a further 30 seconds. When the test is completed the following is displayed:

- Fail: displayed if the test has failed because the compressor was not started or run in reverse rotation.

- Good: displayed if test was successful

1 [1]

b₁b₂b₃

Circuit B compressor, dual-circuit units only

b₁= compressor B1

tESt

b₂= compressor B2

FAIL

Good

b₃= compressor B3

In test mode... as above

StoP

LOW

HIGH

tESt

Two-speed fan status, circuit A

Stop = fan is stopped

Low = fan is in low speed

High = fan is in high speed

3 [1]

4 [1]

5 [1]

StoP

LOW

HIGH

tESt

Two-speed fan status, circuit B

Stop = fan is stopped

Low = fan is in low speed

High = fan is in high speed

b₁b₂

Single-speed fan status

b₁= fan A2

b₂= fan B2

Only for dual-circuit units

Evaporator water pump #1 command status. Not displayed if the unit does not control a pump.

On: pump is running

OFF

tESt

FAIL

Good

Forc

Stop: pump is stopped

Forc: this item is displayed only when the unit is stopped locally (LOFF). selecting this item authorises turning on the

pump with no delay and for an unlimited length of time.The pump will remain on until any button of the user interface is

pressed: it is then immediately stopped. If the unit is in CCN control, then the pump status is displayed in turn with "Forc"

if the pump status if forced through CCN.

During the test phase, power to the pump is switched on for 10 seconds only. When the test is completed the following is

displayed:

- Fail: displayed if the test has failed because the pump was not started

- Good: displayed if the test was successful

6 [1]

Evaporator water pump #2 command status. Not displayed if the unit does not control a secondary pump.

On: pump is running

OFF

tESt

FAIL

Good

Forc

Stop: pump is stopped

Forc: this item is displayed only when the unit is stopped locally (LOFF). selecting this item authorises turning on the

pump with no delay and for an unlimited length of time.The pump will remain on until any button of the user interface is

pressed: it is then immediately stopped. If the unit is in CCN control, then the pump status is displayed in turn with "Forc"

if the pump status if forced through CCN.

During the test phase, ...as above

OFF

tESt

Water or air heat exchanger heater command status

See sections 5.5 and 5.11

b₁b₂

tESt

Alarm output command status

b₁= alarm circuit A

b₂= alarm circuit B

In test mode, the Arrow buttons display 01 and 10 in succession, so as to force each alarm output status in turn.

9 [1]

Boiler command status. Displayed if the unit controls a boiler. See section 5.13.

OFF

tESt

10 [1]

11 [1]

12 [1]

nnn

tESt

Variable fan speed, circuit A. Displayed if the unit controls a variable-speed fan.

nnn

tESt

Variable fan speed, circuit B. Dual-circuits only and if the unit controls a variable-speed fan.

b₁b₂

tESt

4-way reversing cycle valve status. In test mode, the arrow keys successively display 01 and 10, in order to authorise the

test for each valve in turn.

b₁= valve circuit A

b₂= valve circuit B

This item is only displayed for heat pump units.

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OUTPUTS STATUS & TESTS MENU [2] [3] continued

ITEM

FORMAT

UNITS

DESCRIPTION

13 [1]

b₁b₂b₃b₄

tESt

Additional heating stage status.

b₁= stage 1

b₂= stage 2

b₃= stage 3

b₄= stage 4

In test mode the arrow keys successively display 0001, 0010, 0100 and 1000 to force the status of each electric heating stage

in turn.

This item is only displayed for heat pump units controlling additional electric heater stages. See section 5.12.

14 [1]

YES

tESt

Used for local interface test only. Lights or flashes all LEDs and blocks, so as to check that they are working properly.

Automatic test. Selecting this item activates the automatic test function.

Auto tESt

This item is displayed in certain unit configurations only.

Testing authorised only if the unit is in Local Off and all compressors are off.

Password needed only for testing.

“Test” Displayed in turn with the item value during tests.

4.3.10.3 - Manual tests

If a test fails, an error message and an error code are dis-

played. The automatic test procedure is interrupted.

This function allows the user to test the outputs individually, if

the machine is completely shut down (LOFF). To carry out a

manual test use the arrow keys to access the output to be tested

and press the Enter key (longer than 2 seconds) to activate the

modification mode. The password is automatically requested, if it

has not previously been verified. The Outputs/Test LED on the

user interface begins to flash. Enter the desired test value and

again press Enter to start the test. 'TESt' is displayed on the 4-

digit display alternately with the value tested. The Outputs/Test

LED stops flashing. Press the Enter key or an arrow key to stop

the test.

When all tests have been completed, an end-of-test message

appears.

The table below describes the messages shown on the user

interface during the automatic test sequence.

TEXT

DESCRIPTION

Thermistor test failed [XX]

Pressure test failed [XX]

Test number XX of the thermistor has failed

Test number XX of the pressure sensor has

failed

Output test failed [XX]

Input test failed [XX]

Output test number XX has failed

Input test number XX has failed

4.3.10.4 - Automatic tests

The automatic test function verifies the integrity of the analo-

gue entries and activates the outputs in sequence. For each test

't XX' is displayed on the user interface. 'xx' indicates the

number of the test in progress. When a test has been completed,

the following test is automatically activated.

Press enter if test [XX] correct

Request for the operator to validate test XX

OAT [value] press enter if

test [XX] correct

Request for the operator to validate the

outdoor air temperature value displayed.

Test number XX

Auto test completed

Automatic test completed

A message may appear, asking the operator for a validation

with the Enter key, if the control cannot automatically verify a

sensor value or an output status. If the value read or the output

status is incorrect, the operator must press a different key (not

the Enter key) to cancel the automatic test procedure.

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The table below describes the different sequences of the

automatic test.

TEST NUMBER

DESCRIPTION

CONFIRMATION

Outdoor temperature sensor test

yes

Pressure sensor test - circuit A

Pressure sensor test - circuit B (dual-circuit units only)

Defrost sensor test - circuit A (heat pumps only)

Defrost sensor test - circuit B (dual-circuit heat pumps only)

Water flow switch test and primary pump test

5, 6

7, 8, 9

Entering and leaving water temperature sensor test

Water system temperature sensor test (for master/slave units equipped with this sensor only)

Water flow switch test and secondary pump test (for units equipped with a secondary pump only)

Test compressor A1, A2 (if applicable), A3 (if applicable)

4-way reversing valve test, circuitA (heat pumps only)

Test compressor B1 (if applicable), B2 (if applicable), B3 (if applicable)

4-way reversing valve test, circuit B (dual-circuit heat pumps only)

Low-speed test, fan A1 (units not equipped withVarifan)

High-speed test, fan A1 (units not equipped with Varifan)

Low-speed test, fanA2 (dual-circuit units not equipped withVarifan)

High-speed test, fan A2 (dual-circuit units not equipped with Varifan)

Fixed-speed test, fan A2 (for circuits equipped with a second fan)

Fixed-speed test, fan B2 (for circuits equipped with a second fan)

Water and air heat exchanger heater test

10, 11

12, 13, 14

15, 16, 17

19, 20, 21

yes

Not used

Boiler output activation (if unit controls a boiler)

yes

Additional electric heating stage 1 activation (if unit controls electric heating stages)

Additional electric heating stage 2 activation (if unit controls electric heating stages)

Additional electric heating stage 3 activation (if unit controls electric heating stages)

Additional electric heating stage 4 activation (if unit controls electric heating stages)

Alarm output A activation

Alarm output B activation

Automatic test completed

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The table below describes the faults that can be displayed

during the automatic test.

4.3.11- Description of the configuration menu

4.3.11.1- General

TEST FAULT

DESCRIPTION

This menu can be used to display and modify all configura-

tions: Factory, Service and User. Only the User Configuration can

be modified by the end-user. The Factory, Service and master/

slave configurations are not described in this document. A

configuration can only be modified if the unit is fully stopped

(LOFF).

Outdoor air thermistor outside range

Outdoor air value read not validated by operator

Low pressure transducer, circuit A, outside range

High pressure transducer, circuit A, outside range

Low pressure transducer, circuit B, outside range

High pressure transducer, circuit B, outside range

Defrost thermistor, circuit A, outside range

Defrost thermistor, circuit B, outside range

The menus User 1 [USEr 1] and User 2 [USEr 2] are pass-

word-protected. The other menus are directly accessible,

except if item 11 of the User 2 menu (password for all con-

figurations) has been validated.

Water flow switch not open

Primary pump not started or water flow switch not

closed

11, 12, 13; 14, 15

16, 17, 18, 19, 20

Water entering temperature sensor outside range

Water leaving temperature sensor outside range

Temperature difference between entering and leaving

water sensors too high

4.3.11.2 - Password

22, 23; 24, 25, 26

Water system leaving temperature sensor outside

range

A password must be entered in order to access the test function

or to modify a configuration. It is automatically requested, if

necessary: 'EntEr PASS' is displayed on the 4-digit display and

the configuration menu LED flashes, indicating that the

modification mode is active. Press the arrow keys until the

value '11' is displayed on the 4-digit display. Press Enter to

validate this. The configuration menu LED stops flashing. If the

password is correct, 'Good' is displayed. If the password is

incorrect, 'PASS incorrEct' is displayed. The User password has

a default value of 11.

Temperature difference between the system entering

and leaving water sensors too high

Water flow switch not closed or primary pump not

stopped

Secondary pump not started or water flow switch not

closed

Water flow switch not closed or secondary pump not

stopped

Command fault; compressor A1

Command fault; compressor A2

Command fault; compressor A3

Command fault, 4-way reversing valve, circuit A

This value can be modified through the Service configuration.

The password can be entered if the unit is fully stopped,

otherwise 'ACCES dEniEd' (access denied) will be displayed on

the 4-digit display. The controller automatically deactivates the

password after 5 minutes without activity (i.e. no buttons

pressed) or after powering up.

Command fault; compressor B1

Command fault; compressor B2

Command fault; compressor B3

Command fault, 4-way reversing valve, circuit B

Low-speed test, fan A1 not validated by the operator

High-speed test, fan A1 not validated by the operator

Low-speed test, fan B1 not validated by the operator

High-speed test, fan B1 not validated by the operator

Test fan A2 not validated by the operator

Test fan B2 not validated by the operator

Water heat exchanger heater and air heat exchanger

condensate heater test, circuit A not validated by the

operator

Air heat exchanger condensate heater, circuit B, not

validated by the operator

Boiler activation test not validated by the operator

Electric heating stage 1 activation test not validated

by the operator

Electric heating stage 2 activation test not validated

by the operator

Electric heating stage 3 activation test not validated

by the operator

Electric heating stage 4 activation test not validated

by the operator

Alarm relay output activation test, circuit A not

validated by the operator

Alarm relay output activation test, circuit B not

validated by the operator

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SUB-MENU USER CONFIGURATION

ITEM USER 1

USER 2

[USER2]

DATE

[dAtE]*

SCHEDULE 1

[ScHEduLE 1MEnu]*

SCHEDULE 2

[ScHEduLE 2 MEnu]* [HOLidAy MEnu]*

HOLIDAYS

BROADCAST

[BrodCASt]*

[USER1]

Return to previous menu

Return to previous

Return to previous Return to previous menu Return to previous

Return to previous menu

Periodic pump start-

Hour*

SUB-MENU:

Period 1 [PErIod 1]

SUB-MENU:

Period 1 [PErIod 1]

SUB-MENU:

Holidays 1 [HOLidAy 1]

Broadcast acknowledger

selection

Ramp selection*

Start-up delay*

Water pump selection

Night mode - start

hour

Night mode - end

hour

Night mode demand

limit

Day of the week* SUB-MENU:

Period 2 [PErIod 2]

SUB-MENU:

Period 2 [PErIod 2]

SUB-MENU:

Period 3 [PErIod 3]

SUB-MENU:

Period 4 [PErIod 4]

SUB-MENU:

Holidays 2 [HOLidAy 2]

SUB-MENU:

Holidays 3 [HOLidAy 3]

SUB-MENU:

Holidays 4 [HOLidAy 4]

Broadcast activation

Day and month*

Outdoor temperature

broadcast bus

Outdoor temperature

broadcast element

Period 3 [PErIod 3]

Year*

SUB-MENU:

Period 4 [PErIod 4]

Water pump changover

delay*

Pump shutdown in

standby mode

Control contact 3

selection*

Setpoint reset selection,

cooling mode

Night mode min.

demand

Alarm relay selection

SUB-MENU:

Period 5 [PErIod 5]

SUB-MENU:

Period 6 [PErIod 6]

SUB-MENU:

Period 7 [PErIod 7]

SUB-MENU:

Period 8 [PErIod 8]

SUB-MENU:

Period 5 [PErIod 5]

SUB-MENU:

Period 6 [PErIod 6]

SUB-MENU:

Period 7 [PErIod 7]

SUB-MENU:

Period 8 [PErIod 8]

SUB-MENU:

Holidays 5 [HOLidAy 5]

SUB-MENU:

Holidays 6 [HOLidAy 6]

SUB-MENU:

Holidays 7 [HOLidAy 7]

SUB-MENU:

Holidays 8 [HOLidAy 8]

SUB-MENU:

Holidays 9 [HOLidAy 9]

SUB-MENU:

Holidays 10 [HOLidAy 10]

SUB-MENU:

Holidays 11 [HOLidAy 11]

SUB-MENU:

Holidays 12 [HOLidAy 12]

SUB-MENU:

Holidays 13 [HOLidAy 13]

SUB-MENU:

Holidays 14 [HOLidAy 14]

SUB-MENU:

Holidays 14 [HOLidAy 14]

SUB-MENU:

Holidays 16 [HOLidAy 16]

Start month daylight

saving time

Start day daylight saving

time

Start hour daylight saving

time

Minutes to add

Number clock 1

Number clock 2

Setpoint reset selection,

heating mode*

Boiler selection

CCN element

number

CCN bus number

End month daylight saving

time

End day daylight saving

time

Boiler operation

threshold*

Operating threshold,

heating mode*

Electric heating stage

operation threshold*

Electric heating safety

stage threshold*

Electric heating stage

operation schedule*

Quick start-up, electric

heater stages in defrost

mode*

Password for all user

configurations

End hour daylight saving

time

Minutes to subtract

Software version

number

Automatic heating/cooling

changeover selection

Extended display

selection

only displayed if configuration requires.

NOTE: The items in brackets show what is displayed on the

user interface.

SUB-MENU PERIOD CONFIGURATION*

CONFIGURATION

Item

PERIOD 1 to 8

[PEriod X MEnu]*

USER

[USEr]

Return to previous menu

Start of occupied period

End of occupied period

Selection Monday

USER1

[USEr 1]

USER2

[USEr 2]

SCHEDULE 1

[SCHEduLE 1]*

SCHEDULE 2

[SCHEduLE 2]*

HOLIDAYS

[HOLIDAYS]*

HOUR + DATE

[dAtE]*

BROADCAST

[broAdCASE]*

Selection Tuesday

Selection Wednesday

Selection Thursday

Selection Friday

PERIOD 1

PERIOD 2

PERIOD 3

PERIOD 4

PERIOD 5

PERIOD 6

PERIOD 7

PERIOD 8

HOLIDAY 1

HOLIDAY 2

HOLIDAY 3

HOLIDAY 4

HOLIDAY 5

HOLIDAY 6

HOLIDAY 7

HOLIDAY 8

PERIOD 1

PERIOD 2

PERIOD 3

PERIOD 4

PERIOD 5

PERIOD 6

PERIOD 7

PERIOD 8

Selection Saturday

Selection Sunday

Selection holidays

SUB-MENU HOLIDAY CONFIGURATION*

Item

HOLIDAYS 1 to 16

[HoLidAy X MEnu]*

Return to previous menu

Start month holidays

Start day holidays

Number of days, holidays

only displayed if configuration requires.

...

NOTE: The items in brackets show what is displayed on the

user interface.

...

HOLIDAY 15

HOLIDAY 16

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4.3.11.3 - Description of the User 1 Configuration sub-menu

USER 1 CONFIGURATION SUB-MENU [2]

ITEM

FORMAT

USEr MEnu

YES/no

UNITS

DEFAULT

COMMENTS

When selected this item authorises return to the previous menu.

2 [1]

Ramp loading select. For units with more than one compressor only.

Yes = ramp enabled

No = ramp disabled

This configuration enables the ramp to be activated for heating or cooling (depending on configuration): the

maximum rate (in °C/min) of temperature drop or rise for the heat exchanger water (leaving or entering, upon

configuration). Ramp setting value can be configured in the Setpoint menu.

1 to 15

min

Delay at start-up. This value is reinitialised after power-up or when both circuits are halted by local, remote or

CCN command. No compressor will be started up until this pause has expired. However, the evaporator pump

command will be activated immediately.The safety lockout loop will not be checked until the pause has

expired.

0/1/2/3/4

Pump sequence select

0 = no pump

1 = one pump only

2 = two pumps with auto rotation

3 = pump #1 manual select

4 = pump #2 manual select

If the auto sequence is selected, the pump change-over occurs when the rotation delay is elapsed. If the

manual sequence is selected then, the selected pump is used in priority. Change-over occurs if one pump fails.

5 [1]

6 [1]

7 [1]

24 to 3000

«YES/no»

0/1

hours

noi

Pump changeover delay. Displayed if auto pump sequence is selected. This parameter is used for pump

auto-rotation: the control tries to limit the pump run time difference to the pump changeover delay value.

Change-over between pumps occurs when this difference becomes greater than the configured pump

changeover delay.

Pump shutdown in standby mode

Displayed if the unit controls a water pump. If this parameter is validated, the pump will be shut down when

the standby mode is active (in automatic heating/cooling changeover). It automatically restarts in heating or

cooling mode.

Contact 3 select (for single-circuit units)

0 = input is used for demand limit command control

1 = input is used for dual setpoint command control

Determines whether contact 3 is used for remote demand limit or dual setpoint control. For single-circuit units

only.

0/1/2

Cooling setpoint reset select. See section 5.6.2.

0 = reset not selected

1 = reset based on outdoor temperature

2 = reset based on return water temperature

9 [1]

0/1/2

Heating setpoint reset select. See section 5.6.2

0 = reset not selected

1 = reset based on outdoor temperature

2 = reset based on return water temperature

«YES/no»

Boiler control select

Yes = boiler controlled by the unit

No = boiler not controlled

11 [1]

12 [1]

13 [1]

14 [1]

-15 to 0

-20 to 0

-5 to 21

«YES/no»

°C

-10

-15

Boiler threshold. Outdoor air temperature limit; if the temperature is lower, the heat pump is stopped or only

the boiler is used for hot water production. Only for heat pumps controlling an additional boiler.

Operating threshold, heating mode. Outside air temperature threshold below which the heat pump shuts

down.The unit switches the electric heaters on and off (if these exist). For heat pumps only.

Electric heating stage threshold. Maximum outdoor air temperature threshold for the use of electric heating

stages. Only for heat pumps, equipped with optional additional electric heating stages.

Electric heating safety stage. In this configuration the last electric heating stage is only activated in the safety

mode (in case of a unit fault that prevents unit operation in heat pump mode).The other electric heating stages

operate normally. See section 5.12.

15 [1]

16 [1]

17 [1]

0 to 60

minutes

Electric heating stage operation schedule. Permits configuration of a start-up delay after unit start-up during

which the electric heater stages are not allowed to start.

«YES/no»

Quick start-up, electric heater stages in defrost mode. If a circuit switches to defrost mode, the electric

heater stages are allowed to start up immediately. For heat pumps only.

Automatic cooling/heating changeover select. Permits activation of the automatic changeover function.

Caution:This function requires a special operation for control contacts 1 and 2, if the machine is under remote

control (see section 3.6.3).

«YES/no»

yes

Extended menu select

Yes = menu description available

No = menu description not available

This item authorises activating or inhibiting the menu item expanded display.

This item shall be masked when not used.

Access to menu is read/write.

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4.3.11.4 - Description of the User 2 Configuration sub-menu

USER 1 CONFIGURATION SUB-MENU

ITEM

FORMAT

UNITS

DEFAULT

COMMENTS

USEr 2 Menu

«YES/no»

When selected this item authorises return to the previous menu.

Periodic pump quick-start of the water pump(s)

Yes = the pump is started periodically when the unit is manually stopped.

No = periodic pump start is disabled

When the unit is manually stopped (e.g. during the winter season) the pump is started each day at 14.00 hours

for 2 seconds. If two pumps are available, pump #1 is started on odd days and pump #2 on even days.

n₁n₂n₃n₄

Night control mode - start time*

00:00 to 23:59

00:00

Authorises entering the time of day at which the night control mode starts. During this period the fan runs at

low speed (to reduce fan noise) if permitted by operating conditions, and unit capacity is limited to the

maximum night values.

3 [1]

n₁n₂n₃n₄

00:00 to 23:59

Night control mode - end time*

Authorises entering the time of day at which the night control mode ends.

00:00

«YES/no»

Night mode demand limit value. This item permits demand limitation in the night control mode. In this case, if

the unit fans cannot be kept at low speed due to the operating conditions, the unit capacity is reduced to

prevent fan operation at high speed.

0 to 100

0/1/2

Night mode demand limit.The unit capacity is never reduced below this capacity in night control mode.

Alarm relay selection

0 = alarms/alerts, one alarm/alert output per circuit.

1 = alarms only, one alarm output per circuit.

2 = mixed mode, one alarm relay and one alert relay, dual-circuit units only.

0 or 65 to 99

Schedule 1 clock number (for unit on/off schedule, see section 4.3.11.6).

0 = schedule in local operating mode

65 to 99 = schedule in CCN operating mode

Schedule 2 clock number (schedule for setpoint selection, see section 4.3.11.6).

0 = schedule in local operating mode

65 to 99 = schedule in CCN operating mode

1 to 239

0 to 239

«YES/no»

CCN element address.

No two network elements can have the same element number and bus number at the same time.

CCN bus number.

No two network elements can have the same element number and bus number at the same time.

Password for all User Configurations

Yes = password required for all User Configurations (Date, Time Schedule, Broadcast)

No = password require for User menu only

When this item is validated, the User Password will be required for all configurations accessible by the User.

nn.n

Software version number

This item shows the number of the software version used by this controller. Access is read only.

n₁n₂: hours (00 to 23). The first time the Enter button is continuously pressed, the first two characters in the 4-digit display flash so that hours can be adjusted.

n₃n₄: minutes (00 to 59). Continuous pressing of the Enter key again causes the last two characters to flash so that minutes can be adjusted.

4.3.11.5 - Description of Date and Time configuration sub-

4.3.11.6 - Description of the Time Schedules sub-menus

The control provides two timer programs: schedule 1 and

schedule 2 that can be activated if the unit is equipped with an

optional CCN/clock board (if the CCN/clock board is not

installed, the two schedules are permanently in occupied

mode).

DATE & TIME CONFIGURATION SUB-MENU

ITEM

FORMAT

COMMENTS

dAtE MEnu

When selected this item authorises return to the

previous menu.

n₁n₂n₃n₄

Current time setting.

The first timer program (schedule #1) provides a means to

automatically switch the unit from an occupied mode to an

unoccupied mode: the unit is started during occupied periods.

00:00 to 23:59 n₁n₂: hours (00 to 23).The first time the Enter button is

continuously pressed, the first two characters in the 4-

digit display flash so that hours can be adjusted.

n₃n₄: minutes (00 to 59). Continuous pressing of the

Enter key again causes the last two characters to flash

and minutes can be adjusted.

The second timer program (schedule #2) provides a means to

automatically switch the active setpoint from an occupied

setpoint to an unoccupied setpoint: cooling setpoint 1 is used

during occupied periods, cooling or heating setpoint 2 during

unoccupied periods. Heating setpoint 3 is activated during

holiday periods. For additional information on set-point

activation see section 5.6.1.

Current day of week setting.

«Mon»

«tUe»

«uEd»

«tHu»

«FrI»

Monday

Tuesday

Wednesday

Thursday

Friday

«SAt»

«Sun»

Saturday

Sunday

n₁n₂n₃n₄

Current day and month setting.

01:01 to 31:12 n₁n₂:day (01 to 31).The first time the Enter button is

continuously pressed, the first two characters in the 4-

digit display flash so that day can be adjusted.

Each schedule consists of eight time periods set by the operator.

These time periods can be flagged to be in effect or not in effect

on each day of the week plus a holiday period (see section

4.3.11.7 on public holidays). The day begins at 00.00 hours

and ends at 24.00 hours.

n₃n₄:month (01 to 12). Continuous pressing of the Enter

key again causes the last two characters to flash so

that month can be adjusted.

nnnn

Current year setting.

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Program is in unoccupied mode unless a schedule time period

is in effect. If two periods overlap and are both active on the

same day, the occupied mode takes priority over the

unoccupied period.

4.3.11.7 - Description of the Holidays sub-menus

This function is used to define 16 public holiday periods. Each

period is defined with the aid of three parameters: the month,

starting day and duration of the public holiday period. During

these public holidays the controller will be in occupied or

unoccupied mode, depending on the programmed periods

validated for public holidays (see section 4.3.11.6).

Each of the eight periods can be displayed and changed with

the aid of a sub-sub-menu. The table below shows how to

access the period configuration. Method is the same for the

time schedule #1 or the time schedule #2.

Each of these public holiday periods can be displayed and

changed with the aid of a sub-menu.

PERIOD X CONFIGURATION SUB-MENUS (X = 1 TO 8)

ITEM # FORMAT

COMMENTS

ATTENTION: The broadcast function must be activated to

utilise the holiday schedule, even if the unit is running in

stand-alone mode (not connected to CCN). See section

4.3.11.8.

Period X Menu

Indicates the period (X) you are going to configure.

When selected this item authorises a return to the

main menu.

n₁n₂n₃n₄

00:00 to 24:00

Occupied period - Start time*.

Authorises entering the time of day at which the

occupied period starts.

n₁n₂n₃n₄

Occupied period - End time*.

Authorises entering the time of day at which the

occupied period ends.

00:00 to 24:00

Mo- 0 or Mo- 1

tu- 0 or tu- 1

1 = the period is in effect on Monday.

0 = period not in effect on Monday

1 = the period is in effect on Tuesday.

0 = period not in effect on Tuesday.

UE-0 or UE- 1

tH- 0 or tH- 1

Fr-0 or Fr- 1

1 = the period is in effect on Wednesday.0 =

period not in effect on Wednesday.

1 = the period is in effect on Thursday.

0 = period not in effect on Thursday.

1 = the period is in effect on Friday.

0 = period not in effect on Friday.

SA- 0 or SA- 1

Su- 0 or Su- 1

Ho- 0 or Ho- 1

1 = the period is in effect on Saturday.

0 = period not in effect on Saturday.

1 = the period is in effect on Sunday.

0 = period not in effect on Sunday.

1 = the period is in effect on public holidays.

0 = period not in effect on public holidays.

n₁n₂: hours (00 to 24). The first time the Enter button is continuously pressed,

the first two characters in the 4-digit display flash so that hours can be

adjusted.

n₃n₄: minutes (00 to 59). Continuous pressing of the Enter key again causes

the last two characters to flash so that minutes can be adjusted.

Typical timer program:

Time MON TUE WES THU FRI SAT SUN HOL

P2 P2 P3

MON :

TUE :

WED :

THU :

FRI :

SAT :

SUN :

HOL :

Monday

Tuesday

Wednesday

Thursday

Friday

Saturday

Sunday

Starts at

Ends at

Active on

P1: period 1,

P2: period 2,

P3: period 3,

P4: period 4,

P5: period 5,

P6: period 6,

P7: period 7,

P8: period 8,

0h00,

7h00,

20h00,

3h00,

Monday

Monday and Tuesday

Wednesday

Thursday and Friday

Saturday

Public holidays

18h00,

21h00,

17h00,

12h00,

21h00,

Public holidays

Not used in this example

Occupied

Unoccupied

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HOLIDAY PERIOD X CONFIGURATION SUB-MENUS (X = 1 TO 16)

4.3.11.8 - Description of the Broadcast sub-menu

The controller provides a broadcast configuration menu which

you can use to configure the unit to be the CCN’s broadcaster,

responsible for transmitting the time, outdoor temperature, and

holiday flags to all system elements.

ITEM # FORMAT

COMMENTS

HoLidAy X Sub-menu

When selected this item authorises a return to

the configuration menu.

0 to 12

Start month of public holiday period

0 = period not in use

1 = January, 2 = February, etc.

0 to 31

Start day of public holiday period. 0 period

not in use.

This menu also authorises setting the date of the daylight

saving time. There should be only one broadcaster in a CCN, so

this table should not be configured if any other system element

is acting as broadcaster.

0 to 99 days

Duration of the public holiday period in

days.

Typical programming for public holidays:

A public holiday period lasting 1 day on 20th May, for instance, is configured as

follows: start month = 5, start day = 20, duration = 1

A public holiday period lasting 2 day on 25th May, for instance, is configured as

follows: start month = 5, start day = 25, duration = 2

ATTENTION: If the unit operates in standalone mode (not

CCN connected) this menu can also must be used if the holi-day

function is used or to correct for daylight saving time.

BROADCAST CONFIGURATION SUB-MENU

ITEM #

FORMAT

COMMENTS

broAdCASt MEnu

YES/no

When selected this item authorises a return to the main menu.

Determines whether or not the unit is a broadcast acknowledger when the unit is connected on a CCN network.There must be only

one broadcast acknowledger in a CCN.

Warning: if the unit operates in standalone mode (not CCN connected) this choice must be set to Yes if the holiday function is used

(see section 4.3.11.6) or if you want to configure the daylight saving time function.

YES/no

This item authorises enabling or disabling the Broadcast function. When it is set to Yes, the control will make a periodic broadcast

on the CCN. When it is set to No, the control is not the broadcaster and there is no need to configure the other choice in this table.

There must be only one broadcaster in a CCN and this item should not be configured if any other system element is acting as

broadcaster.

Warning: if the unit operates in standalone (not CCN connected) this choice must be set to Yes if the holiday function is used (see

section 4.3.11.6) or if you want to configure the daylight saving time function.

nnn

OAT Broadcaster bus number: it is the bus number of the system that has the outside air temperature sensor connected to it.

0 to 239

Used for CCN network function only.

nnn

0 to 239

OAT Broadcaster element number: it is the element number of the system element that has the outside air temperature sensor

connected to it. Used for CCN network function only.

1 to 12

Daylight saving start month. In this mode you enter the month in which the broadcaster will adjust its time for the start of

daylight saving time.

1 to 31

Daylight saving start day. In this mode you enter the day on which the broadcaster will adjust its time for the start of daylight

saving time.

n₁n₂n₃n₄

Authorises entering the hours and minutes for saving start. In this mode you enter the time of day when the broadcaster will

00:00 to 24:00

adjust its time for the start of daylight saving time.

n₁n₂: hours (00 to 24).The first time the Enter button is continuously pressed, the first two characters in the 4-digit display flash so that

hours can be adjusted.

n₃n₄: minutes (00 to 59). Continuous pressing of the Enter key again causes the last two characters to flash so that minutes can be

adjusted.

nnnn

Daylight saving start minutes to add: number of minutes by which the broadcaster will adjust its time for the start of daylight

1 to 1440 minutes

saving time.

Daylight saving stop month. In this mode you enter the month in which the broadcaster will adjust its time for the end of

1 to 12

daylight saving time.

1 to 31

Daylight saving stop day. In this mode you enter the day on which the broadcaster will adjust its time for the end of daylight

saving time.

n₁n₂n₃n₄

Authorises entering the hours and minutes for saving stop. In this mode you enter the time of day when the broadcaster

00:00 to 24:00

will adjust its time for the end of daylight saving time.

n₁n₂: hours (00 to 24).The first time the Enter button is continuously pressed, the first two characters in the 4-digit display flash so that

hours can be adjusted.

n₃n₄: minutes (00 to 59). Continuous pressing of the Enter key again causes the last two characters to flash so that minutes can be

adjusted.

nnnn

Daylight saving start minutes to subtract: number of minutes by which the broadcaster will adjust its time for the end of

1 to 1440 minutes

daylight saving time.

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4.3.12 - Description of the Alarms menu

4.3.14 - Runtime menu description

This menu is used to display and reset up to 5 active alarms. It

also permits alarm reset. If no alarm is active this menu is not

accessible. See section 6 for a complete description of the

alarm codes and alarm reset.

RUNTIMES

RUNTIMES 1

[runtiMES 1]

RUNTIMES 2

[runtiMES 2]

MAINTENANCE

[MAintEnAnCE]

ALARMS MENU

ITEM #

0 [1]

FORMAT

COMMENTS

NOTE: The items in brackets show what is displayed on the

user interface.

X ALArM

rESEt ALArM

X alarms are active

Reset of alarms is requested

To reset all active alarms, continuously press

the Enter key. ‘rESET ALArM’ is then displayed.

Press the select key again: all alarms are reset.

4.3.14.1 - Description of the Runtimes 1 menu

RUNTIMES MENU [2]

1 [1]

2 [1]

3 [1]

4 [1]

5 [1]

1 to 55

Current alarm code 1*

Current alarm code 2*

Current alarm code 3*

Current alarm code 4*

Current alarm code 5*

ITEM # FORMAT

UNITS

COMMENTS

When selected this item

authorises return to the

previous menu

nnnn | M 10 | M100

hrs/10 or 100

Unit operating hours*

2 [1] nnnn | M 10 | M100

Unit operating hour in cooling

mode

This item is masked when nil

3 [1] nnnn | M 10 | M100

hrs/10 or 100

Unit operating hours in heating

mode

Pressing the Enter key when alarm code is displayed causes the following

message to be scrolled:

“time of alarm” “date of alarm” “full CCN alarm message”

- “time of alarm”: xxhmm

- “date”: dd-mm

- “full CCN alarm message”: up to 64 characters

nnnn | M 10 | M100

Compressor A1 operating

hours*

5 [1] nnnn | M 10 | M100

6 [1] nnnn | M 10 | M100

7 [1] nnnn | M 10 | M100

8 [1] nnnn | M 10 | M100

9 [1] nnnn | M 10 | M100

Compressor A2 operating

hours*

Compressor A3 operating

hours*

Compressor B1 operating

hours*

4.3.13 - Description of the Alarms History menu

Compressor B2 operating

hours*

ALARMS HISTORY MENU

Compressor B3 operating

hours*

ITEM #

1 [1]

2 [1]

3 [1]

4 [1]

5 [1]

6 [1]

7 [1]

8 [1]

9 [1]

10 [1]

FORMAT

1 to 55

1 to55

COMMENTS

10 nnnn | M 10 | M100

11 nnnn | M 10 | M100

12 [1] nnnn | M 10 | M100

13 [1] nnnn | M 10 | M100

14 [1] nnnn | M 10 | M100

15 [1] nnnn | M 10 | M100

16 [1] nnnn | M 10 | M100

17 [1] nn

-/10 or 100

hrs/10 or 100

Machine starts*

Alarm history code 1*

Alarm history code 2*

Alarm history code 3*

Alarm history code 4*

Alarm history code 5*

Alarm history code 6*

Alarm history code 7*

Alarm history code 8*

Alarm history code 9*

Alarm history code 10*

Compressor A1 starts*

Compressor A2 starts*

Compressor A3 starts*

Compressor B1 starts*

Compressor B2 starts*

Compressor B3 starts*

Pump #1 operating hours*

Pump #2 operating hours*

1 to 55

18 [1] nn

This item is masked when not used

This item is masked when nil

NOTES

Certain values are divided by 10 or by 100, so that number of hours or start-

ups of less then 10 are displayed as 0.

Pressing the Enter key when alarm code is displayed causes the following

message to be scrolled:

“time of alarm” “date of alarm” “full CCN alarm message”

- “time of alarm”: xxhmm

- “date”: dd-mm

When the value is divided by 10 or by 100 it is displayed in turn with “M 10” or

“M100”.

- “full CCN alarm message”: up to 64 characters

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4.3.14.2 - Description of Runtimes 2 menu

5 - PRO-DIALOG CONTROL OPERATION

5.1 - Start/stop control

ITEM #

FORMAT

UNITS

DESCRIPTION

When selected this item

authorises return to the

previous menu

The table below summarises the unit control type and stop or

go status with regard to the following parameters.

Compressor starts for

compressor with most starts

during the last hour

Operating type: this is selected using the start/stop button

on the front of the user interface.

Remote start/stop contacts: these contacts are used when

the unit is in remote operating type (rEM). See sections

3.6.2 and 3.6.3.

24 hours average number of

starts/hour, compressor

minutes

Minimum compressor

operating time during last

hour

CHIL_S_S: this network command relates to the chiller

start/stop when the unit is in CCN control (CCn). Vari-

able forced to disable: the unit is halted. Variable forced to

Enable: the unit runs in accordance with schedule 1.

Start/Stop schedule: occupied or unoccupied status of the

unit as determined by the chiller start/stop program

(Schedule #1). Used when the unit is equipped with an

optional CCN/clock board, otherwise the chiller occupied

mode is forced to occupied all the time.

minutes

24 hours average minimum

operating time above

5 [1]

6 [1]

7 [1]

8 [1]

nnnn | M 10 | M100 hrs/10 or 100

nnnn | M 10 hrs/10 or 100

Boiler operating hours

Electric heating stage

operating hours

nnnn | M 10 | M100 -/10 or 100

No. of defrost cycles, circuit

Master control type. This parameter is used when the

unit is the master unit in a two chiller lead/lag arrange-

ment. The master control type determines whether the unit

is to be controlled locally, remotely or through CCN (this

parameter is a Service configuration).

4.3.14.3 - Maintenance menu description

To be active, the maintenance function must be preset in the

Service configuration

CCN emergency shutdown: if this CCN command is

activated, it shuts the unit down whatever the active

operating type.

ITEM #

FORMAT

DESCRIPTION

MAintEnAnCE MEnu

When selected this item authorises return to

the previous menu.

1 [1]

2 [1]

3 [1]

4 [1]

5 [1]

Accessible with the Service password.

For future use

General alarm: the unit is totally stopped due to failure.

For future use

ALErt

Water loop rate to low

nnn/ALErt

Next primary pump maintenance operation in

nnn days. 'ALErt' is displayed, when the delay

before maintenance has elapsed.

6 [1]

7 [1]

nnn/ALErt

Next secondary pump maintenance operation

in nnn days. 'ALErt' is displayed, when the

delay before maintenance has elapsed.

Next water filter maintenance operation in nnn

days. 'ALErt' is displayed, when the delay

before maintenance has elapsed.

This item is masked when not used.

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ACTIVE OPERATING TYPE

LOFF L-C L-SC rEM

STATUS OF PARAMETERS

CONTROL UNIT

TYPE

MODE

CCN MASt CHIL_S_S REMOTE

MASTER

START/STOP CCN

GENERAL

START/STOP CONTROL

SCHEDULE

MODE

EMERGENCY ALARM

SHUTDOWN

CONTACT

TYPE

Enable

Off

Yes

Active

Local

Remote

CCN

Active

Unoccupied

Active

Off

Unoccupied

Active

Disable

Unoccupied

CCN

Active

Local

Remote

CCN

Off

Remote

Unoccupied

Active Disable

CCN

Active

CCN

Unoccupied

CCN

Active

Disable

Local

Remote

CCN

Active

Occupied

Active

On cooling

On heating

On auto

Active

Enable

Active

Local

Remote

CCN

Local

Remote

CCN

On cooling

On heating

On auto

Active Enable

5.2 - Heating/cooling/standby operation

5.2.2 - Heating/cooling/auto selection

The table below summarises the unit heating/cooling opera-

tion, based on the following parameters:

5.2.1 - General

The heating/cooling/standby selection applies to all units. But

only 30RA/RY (liquid chillers) units, controlling a boiler and

30RH/RYH (heat pumps) units can change over to heating

mode. Heating/cooling control can be automatic or manual.

Control type: indicates whether the unit operates in local,

remote or CCN mode. See section 5.1.

Unit on/off status: indicates whether the unit is shut

down (not authorised to start) or in operation (or

authorised to start).

In automatic mode the outdoor temperature determines the

heating/cooling/standby changeover based on the two

threshold values configured by the user (see Setpoint menu for

cooling and heating mode changeover thresholds). If the unit is in

standby it does not cool or heat, and no compressor can be

activated. The diagram below summarises the operating

principle in automatic mode.

Heating/cooling/auto selection in local mode: operating

mode selected via the user interface. See Information

menu.

Remote heating/cooling contacts: these contacts are only

active if the unit is under remote control. See sections

3.6.2 and 3.6.3.

HC_SEL: this network command permits heating/

cooling/auto control, if the unit is in CCN operating

mode.

Outdoor temperature: determines the operation, if the

unit is in automatic heating/cooling/standby changeover

mode.

HEATING

STANDBY

COOLING

Outdoor

temperature

Heating

Cooling

threshold*

threshold

This threshold does not apply to cooling only units that do not control a boiler.

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PARAMETER STATUS

HEATING/COOLING REMOTE HEATING/ HC_SEL

ON/OFF

STATUS

CONTROL

TYPE

OUTDOOR TEMPERATURE

OPERATING

MODE

SELECTION IN

LOCAL MODE

COOLING CONTACTS

Off

Cooling

Heating

Cooling

Heating*

Standby

Cooling

Heating

Cooling

Heating*

Standby

Cooling

Heating

Cooling

Heating*

Standby

Local

Remote

CCN

Cooling

Heating

Auto

> Cooling threshold

Auto

< Heating threshold

Auto

Between cooling and heating thresholds

Cooling mode

Heating mode

Auto mode

> Cooling threshold

Auto mode

< Heating threshold

Auto mode

Between cooling and heating thresholds

Cooling

Heating

Auto

CCN

> Cooling threshold

CCN

< Heating threshold

CCN

Between cooling and heating thresholds

Does not apply to cooling only units that do not control a boiler.

5.3 - Evaporator water pump control

5.4 - Control interlock contact

The unit can control one or two evaporator water pumps. The

evaporator water pump is turned on when this option is

configured (see User configuration) and when the unit is in one

of the on modes described above or in delay mode. Since the

minimum value for the delay at start-up is 1 minute

(configurable between 1 and 15 minutes), the pump will run

for at least one minute before the first compressor starts. The

pump is kept running for 20 seconds after the unit goes to stop

mode. The pump keeps working when the unit switches from

heating to cooling mode or vice-versa. It is turned off if the

unit is shut down due to an alarm unless the fault is a frost

protection error. The pump can be started in particular

operating conditions when the evaporator heater is active (see

section 5.5). See section 5.14 for the particular evaporator

pump control for the follower unit (master/slave assembly).

This contact checks the status of a loop (water flow switch and

customer safety loop, see section 3.6). It prevents the unit from

starting if it is open when the delay at start-up has expired. This

open contact leads to an alarm shut-down, if the unit is

running.

5.5 - Evaporator antifreeze protection

The heater for the evaporator and water pump cycling (for units

with a pump) can be energised to protect the evaporator, if it

can be damaged by freezing, when the unit is shut down for a

long time at low outdoor temperature.

NOTE: Evaporator heater control parameters can be

modified, using the Service configuration.

If two pumps are controlled and the reversing function has

been selected (see User 1 configuration), the control tries to

limit the pump run time delta to the configured pump change-

over delay. If this delay has elapsed, the pump reversing

function is activated, when the unit is running. During the

reversing function both pumps run together for two seconds.

5.6 - Control point

The control point represents the water temperature that the unit

must produce. The inlet water is controlled by default, but the

outlet water can also be controlled (requires a Service

configuration modification).

If a pump has failed and a secondary pump is available, the

unit is stopped and started again with this pump.

Control point = active setpoint + reset

The control provides a means to automatically start the pump

each day at 14.00 hours for 2 seconds when the unit is off. If

the unit is fitted with two pumps, the first pump is started on

odd days and the second pump is started on even days. Starting

the pump periodically for few seconds increases the life-time

of the pump bearings and the tightness of the pump seal.

5.6.1 - Active setpoint

Two setpoints can be selected as active in cooling mode and

three in heating mode. Usually, the second cooling setpoint is

used for unoccupied periods or for ice storage (brine unit). The

second setpoint in heating mode is used for unoccupied

periods, and the third heating setpoint is used for holiday

periods or public holidays. Depending on the current opera-

tions, the active setpoint can be selected by choosing the item

in the Information menu, with the user’s volt-free contacts,

with network commands or with the setpoint timer program

(schedule 2).

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The following table summarises the possible selections

depending on the control types (local, remote or CCN) and the

following parameters:

REMOTE OPERATING MODE - DUAL-CIRCUIT UNITS

PARAMETER STATUS

HEATING/COOLING CONTROL SCHEDULE 2

ACTIVE SETPOINT

OPERATING MODE

CONTACTS STATUS

Setpoint select in local control: item #12 of the Infor-

mation menu permits selection of the active setpoint, if

the unit is in local operating type.

Cooling

sp 1

sp 2

sp 3

Auto

sp 1

sp 2

sp 3

Auto

Cooling setpoint 1

Cooling setpoint 2

Cooling setpoint 1

Cooling setpoint 2

Heating setpoint 1

Heating setpoint 2

Heating setpoint 3

Heating setpoint 1

Heating setpoint 2

Heating setpoint 3

Cooling

Heating/cooling operating mode

Cooling

Occupied

Control contacts: status of control contacts 5 and 6 (dual-

circuit units only). These contacts are only active if the

unit is in remote control operating type. See section 3.6.6.

Control contact 3: status of control contact 3 (single-

circuit units only). See section 3.6.4.

Contol contact 3 selection: this selection, only used for

single-circuit units, indicates if contact 3 is used for dual

setpoint control or for demand limit control (see User

Configuration menu).

Cooling

Unoccupied

Heating

Occupied

Unoccupied

Holiday

Heating

CCN OPERATING MODE

PARAMETER STATUS

Schedule 2 status: schedule for setpoint selection. See

section 4.3.11.6.

HEATING/COOLING SCHEDULE 2

OPERATING MODE STATUS

ACTIVE SETPOINT

Cooling

Heating

Occupied

Unoccupied

Occupied

Unoccupied

Holiday

Cooling setpoint 1

Cooling setpoint 2

Heating setpoint 1

Heating setpoint 2

Heating setpoint 3

LOCAL OPERATING MODE

PARAMETER STATUS

HEATING/COOLING LOCAL

OPERATING MODE SETPOINT STATUS

SELECTION

SCHEDULE 2 ACTIVE SETPOINT

Cooling

Heating

sp 1

sp 2

Auto

sp 1

sp 2

sp 3

Auto

Cooling setpoint 1

Cooling setpoint 2

Cooling setpoint 1

Cooling setpoint 2

Heating setpoint 1

Heating setpoint 2

Heating setpoint 3

Heating setpoint 1

Heating setpoint 2

Heating setpoint 3

Occupied

Unoccupied

Occupied

Unoccupied

Holiday

REMOTE OPERATING MODE - SINGLE-CIRCUIT UNITS

PARAMETER STATUS

ACTIVE SETPOINT

HEATING/COOLING

OPERATING MODE

CONTROL CONTACT 3

SELECTION

CONTROL CONTACT 3

SCHEDULE 2 STATUS

Cooling

Heating

Setpoint

Setpoint 1

Cooling setpoint 1

Cooling setpoint 2

Cooling setpoint 1

Cooling setpoint 2

Heating setpoint 1

Heating setpoint 2

Heating setpoint 1

Heating setpoint 2

Heating setpoint 3

Setpoint

Setpoint 2

Demand limit

Setpoint

Occupied

Unoccupied

Setpoint 1

Setpoint

Setpoint 2

Demand limit

Occupied

Unoccupied

Holiday

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5.6.2 - Reset

5.7 - Demand limit

Reset means that the active setpoint is modified so that less

machine capacity is required (in cooling mode, the setpoint is

increased, in heating mode it is decreased). This modification is

in general a reaction to a drop in the load. For the Pro-Dialog

control system, the source of the reset can be configured in the

User 1 configuration: it can be provided either by the outdoor

temperature (that gives a measure of the load trends for the

building) or by the return water temperature (delta T that gives

an average building load). In response to a drop in the outdoor

temperature or to a drop in delta T, the cooling setpoint is

normally reset upwards in order to optimise unit performance:

Generally, demand limit is used by an energy management

system to restrict the unit electricity consumption. The PRO-

DIALOG control system enables the capacity of the unit to be

limited by means of user-controlled volt-free contacts. Single-

circuit units only have one contact (control contact 3), available in

the User Configuration function for demand limiting or setpoint

selection. Dual-circuit units have two volt-free contacts that

permit several limit levels. The capacity of the unit cannot exceed

the demand limit setpoint activated by the position of the

contacts (see section 3.6.4 and 3.6.5 for the contact description).

The demand limit setpoints are adjustable via the setpoint menu.

In both cases the reset parameters, i.e. slope, source and

maximum value, are configurable in the Setpoints menu (see

section 4.3.8). Reset is a linear function based on three

parameters.

The demand limit is active in all operating types: Local,

Remote or CCN. However in CCN operating type, demand

limit can be controlled directly with the aid of CCN commands.

•

A reference at which reset is zero (outdoor temperature or

delta T - no reset value).

A reference at which reset is maximum (outdoor

temperature or delta T - full reset value).

The maximum reset value.

A limitation value of 100% means that the unit may call upon

the full array of its capacity stages.

5.8 - Night mode

Reset example in cooling mode

The night period is defined (see User configuration) by a start

time and an end time that are the same for each day of the

week. During the night period, the fan runs at low speed, if

permitted by the current operating conditions. In addition, the

user can reduce the unit capacity (but a minimum capacity

value can be configured).

5.9 - Capacity control

This function adjusts the number of active compressors to keep

the heat exchanger water temperature at its setpoint. The

precision with which this is achieved depends on the capacity

of the water loop, the flow rate, the load, and the number of

stages available on the unit. The control system continuously

takes account of the temperature error with respect to the

setpoint, as well as the rate of change in this error and the

difference between entering and leaving water temperatures, in

order to determine the optimum moment at which to add or

withdraw a capacity stage. If the same compressor undergoes

too many starts (per hour) or runs below one minute each time

it is started this automatically brings about reduction of

compressor starts, which makes leaving water temperature

control less precise. In addition, the high pressure, low pressure

or defrost unloading functions can also affect the temperature

control accuracy. Compressors are started and stopped in a

sequence designed to equalise the number of start-ups (value

weighted by their operating time).

Outdoor temperature (OAT)

Evaporator Delta T

Legend

Maximum reset value

OAT or delta T for no reset

OAT or delta T for full reset

Building Load

NOTE: Circuits with 3 compressors (reversible heat pump

units) only provide 2 capacity stages (2 compressors are

started/stopped together).

5.10 - Head pressure control

Condensing pressure control is automatically ensured by a two-

speed fan and can also be ensured by an additional fan on each

circuit (no adjustment).

Fanstart-up:

ATTENTION: In accordance with the operating conditions

the fans can be cleaned periodically. A fan can start at any

time, even if the unit has been shut down.

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The master/slave assembly can operate with constant or

variable flow. In the case of variable flow each machine must

control its own water pump and automatically shut down the

pump, if the cooling capacity is zero. For constant flow

operation the pumps for each unit are continuously operating, if

the system is operating. The master unit can control a common

pump that will be activated, when the system is started. In this

case the slave unit pump is not used.

5.11 - Defrost function

Defrost is activated, when the unit is in heating mode, in order

to reduce frost build-up on the air heat exchanger. The defrost

cycle can only be applied to one circuit at a time. During the

defrost cycle the fans of that circuit are stopped, and the four-

way refrigerant valve is reversed, forcing the circuit to cooling

mode. The fan can temporarily be restarted during the defrost

cycle. The defrost cycle is fully automatic and does not require

any setting. A condensate heater prevents ice formation at the

bottom of the heat exchangers, if the defrost cycles are taking

place at low outdoor temperature.

All control commands to the master/slave assembly (start/stop,

setpoint, heating/cooling operation, load shedding, etc.) are

handled by the unit which is configured as the master, and

must therefore only be applied to the master unit. They will be

transmitted automatically to the slave unit. The master unit can

be controlled locally, remotely or by CCN com-mands.

Therefore to start up the assembly, simply validate the Master

operating type (MASt) on the master unit. If the Master has

been configured for remote control then use the remote volt-

free contacts for unit start/stop. The slave unit must stay in

CCN operating type continuously. To stop the master/slave

assembly, select Local Off (LOFF) on the master unit or use

the remote volt-free contacts if the unit has been configured for

remote control.

5.12 - Additional electric heater stage control

The heat pump units can control up to four additional electric

heating stages.

The electric heating stages are activated to complement the

heating capacity when the following conditions are satisfied:

The unit uses 100% of the available heating capacity, or the

unit is limited in its operation by a protection mode (low

suction temperature, hot gas or defrost sequence in

progress protection), and in all cases cannot satisfy the

heating load.

One of the functions of the master unit (depending on its

configuration) may be the designation, whether the master or

slave is to be the lead machine or the follower. The roles of

lead machine and follower will be reversed when the differ-

ence in running hours between the two units exceeds a con-

figurable value, ensuring that the running times of the two

units are automatically equalised. The changeover between lead

machine and follower may take place when the assembly is

started up, or even whilst running. The running time balancing

function is not active if it has not been configured: in this case

the lead machine is always the master unit.

The outdoor temperature is below a configured threshold

(see User 1 configuration).

The unit demand limit is not active.

The user may configure the last available electric heating stages

as a safety stage. In this case, the safety stage is only activated in

addition to the other stages if there is a machine fault, preventing

the use of the heating capacity. The other electric heating stages

will continue to operate as described above.

5.13 - Control of a boiler

The lead machine will always be started first. When the lead

machine is at its full available capacity, start-up delay (con-

figurable) is initialised on the follower. When this delay has

expired, and if the error on the control point is greater than

1.7°C, the follower unit is authorised to start and the pump is

activated. The follower will automatically use the master unit

active setpoint. The lead machine will be held at its full

available capacity for as long as the active capacity on the

follower is not zero. When the follower unit receives a com-

mand to stop, its evaporator water pump is turned off with 20

seconds delay.

NOTE: The control of the electric heating stages or of a

boiler is not authorised for slave units.

The unit can control the start-up of a boiler, if it is in heating

mode. When the boiler is operating, the unit water pump is

stopped.

A heat pump unit and a boiler cannot operate together. In this

case the boiler output is activated in the following conditions:

The unit is in heating mode, but a fault prevents the use of

the heat pump capacity.

In the event of a communication fault between the two units, each

shall return to an autonomous operating mode until the fault is

cleared. If the master unit is halted due to an alarm, the slave

unit is authorised to start without prior conditions.

The unit is in heating mode, but works at a very low

outdoor temperature, making the heat pump capacity

insufficient. The outdoor air temperature threshold for use

of the boiler is fixed at -10°C, but this value can be

adjusted in the User 1 menu.

5.15 - Controlling Pro-Dialog units with a System

Manager

5.14 - Master/slave assembly

Up to eight PRO-DIALOG units (or System Manager

compatible units) can be controlled by one control module of

the FSM, CSM III or HSM type which can handle multitasking

of control functions such as starting units in sequence.

Two PRO-DIALOG units can be linked to produce a master/

slave assembly. The two machines are interconnected over the

CCN bus. All parameters required for the master/slave function

must be configured through the Service configuration menu.

Master/slave operation requires the connection of a temperature

probe at the common manifold on each machine, if the heat

exchanger leaving water temperature is controlled.

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6 - DIAGNOSTICS - TROUBLESHOOTING

6.1 - General

This means that an alarm can be reset without stopping the

machine. In the event of a power supply interrupt, the unit

restarts automatically without the need for an external com-

mand. However, any faults active when the supply is inter-

rupted are saved and may in certain cases prevent a circuit or a

The PRO-DIALOG control system has many fault tracing aid

functions. The local interface and its various menus give access unit from restarting.

to all unit operating conditions. The test function makes it

possible to run a quick test of all devices on the unit. If an

operating fault is detected, an alarm is activated and an alarm

code is stored in the Alarm menu.

A manual reset must be run from the main interface using the

following procedure:

RESET OF ACTIVE ALARMS

OPERATION

ITEM NUMBER

2-DIGIT DISPLAY 4-DIGIT DISPLAY BUTTON LED

ITEM VALUE

PRESS MENU

6.2 - Displaying alarms

Hold down the MENU

button until the LED for

alarms lights. The 4-

digit display shows the

number of active

The alarm LEDs on the summary interface (see section 4.1)

give a quick display of the status of each circuit and the unit as

a whole.

alarms (2 in this

example).

2 ALArM

A flashing LED shows that the circuit is operating but

there is an alarm.

Press the Enter button

until "rESEt ALARrM" is

shown in the 4-digit

display.

rESEt ALArM

A steady LED shows that the circuit has been shut down

due to a fault.

The Alarm menu on the main interface displays up to 5 fault

codes that are active on the unit.

Press the Enter button

again to validate the

reset. "Good" is

Good

then, 2 AL

then, no ALArM

displayed for 2 seconds

then, "2 ALArM" and

then, "no ALArM".

6.3 - Resetting alarms

When the cause of the alarm has been corrected the alarm can

be reset, depending on the type, either automatically on return

to normal, or manually when action has been taken on the unit.

Alarms can be reset even if the unit is running.

6.4 - Alarm codes

The following list gives a complete description of each alarm code and its possible cause.

ALARM CODE DESCRIPTIONS

ALARM ALARM NAME

CODE

ALARM DESCRIPTION

ACTION TAKEN BY

THE CONTROL

RESET TYPE

PROBABLE CAUSE

Compressor A1 failure

Motor safety input has opened due to

compressor overtemperature protection.

Compressor is shut

down

Manual

Compressor overheat

Compressor A2 failure

Compressor A3 failure

Compressor B1 failure

Compressor B2 failure

Compressor B3 failure

As above

Unit shut down

As above

Heat exchanger leaving fluid

thermistor failure

Thermistor outside range

Automatic, if temp. measured by sensor Faulty thermistor, wiring error or

returns to permitted range of values

disconnection

10 Heat exchanger entering fluid

As above

thermistor failure

CHWS fluid thermistor failure

(master/slave)

As above

12 Defrost sensor fault, circuit A

Circuit shut down, if unit As above

is in heating mode

13 Defrost sensor fault, circuit B

14 OAT sensor failure

As above

15 Discharge pressure transducer Voltage delivered by the sensor is incorrect Circuit A shut down

Automatic if the voltage delivered by the Defective transducer, wiring fault

sensor returns to normal

failure, Circuit A

16 Discharge pressure transducer Value read by the sensor is outside range

Circuit B shut down

As above

failure, Circuit B

17 Suction pressure transducer

Voltage delivered by the sensor is incorrect Circuit A shut down

As above

failure, Circuit A

18 Suction pressure transducer

Value read by the sensor is outside range

Circuit B shut down

As above

failure, Circuit B

21 CCN/clock board failure

The clock board is no longer detected

Unit shut down

Automatic if board is detected again

Defective CCN/clock board

22 Loss of communication with

Communication has been lost with the slave Circuit B shut down

board (circuit B control)

Automatic if communication is re-

established

Bus wiring fault, wrong software in slave

board or defective slave board

slave board

23 Loss of communication with

Communication has been lost with the

compressor A3 + B3 control board

Compressors A3 + B3

shut down

As above

compressor slave board

24 Loss of communication with PD- Communication has been lost with the

4 x DO slave board electric heating stage control board

Electric heating stages As above

shut down

As above

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ALARM CODE DESCRIPTIONS (continued)

ALARM ALARM NAME

CODE

ALARM DESCRIPTION

ACTION TAKEN BY

THE CONTROL

RESET TYPE

PROBABLE CAUSE

30 Low refrigerant pressure failure, Circuit running and the suction pressure

circuit A below threshold

Circuit shut down

Automatic when pressure returns to

normal and if the same fault has not

occurred the same day (machine

equipped with CCN/clock board, If not,

manual)

Shortage of refrigerant, filter blocked or

faulty pressure sensor

31 Low refrigerant pressure failure, As above

As above

circuit B

32 High pressure failure, circuit A

Circuit running and the discharge pressure Circuit shut down

exceeds the high pressure trip point

Manual, the high pressure switch must

be reset manually with the push-button

located on or in the pressure switch

Fan circuit fault, high condenser

entering air temperature

33 High pressure failure, circuit B

As above

34 Reverse compressor rotation,

One circuit compressor runs in reverse

rotation

Incorrect compressor wiring

circuit A

35 Reverse compressor rotation,

As above

circuit B

36 Water heat exchanger frost

The heat exchanger entering or leaving

water sensor is below the frost trip point

Unit shut down

Automatic if the same alarm has not

tripped the same day (machine equipped

with CCN/clock board, If not, manual)

Low water flow or defective thermistor

protection

37 Repeated low evaporator

More than 6 successive circuit capacity

Circuit shut down

Manual

Faulty pressure sensor, clogged filter or

low refrigerant charge

suction temperature unloading, unloads because of low suction temperature

circuit A override.

38 Repeated low evaporator suction As above

As above

None

As above

Automatic

As above

temperature unloading, circuit B

39 Repeated high pressure

More than 6 successive circuit capacity

Faulty transducer, high condenser

entering air temperature, high entering

water temperature, condenser fouled

fan flow rate too low.

unloading, circuit A

unloads because of high pressure override.

As above

40 Repeated high pressure

As above

unloading, circuit B

41 Repeated high discharge

temperature unloading in

heating mode, circuit A

More than 8 successive circuit capacity

unloads because of high discharge

temperature

Pressure sensor faulty or heat

exchanger fouled

42 Repeated high discharge

temperature unloading in

heating mode, circuit B

As above

43 Repeated low suction

temperature unloading in

heating mode, circuit A

More than 8 successive circuit capacity

unloads because of low suction temperature

Pressure sensor faulty, filter obstructed,

shortage of refrigerant, heat exchanger

fouled or fan faulty.

44 Repeated low suction

temperature unloading in

heating mode, circuit B

As above

45 Low heat exchanger entering

water temperature in heating

mode

Heat exchanger temperature is too low (less Unit shut down

than 10°C), preventing unit start-up

As above

46 Safety interlock open

Safety interlock not closed before end of the Unit prevented to start

Manual

Evaporator pump control or water flow

switch failure

start-up delay or opens during operation

or shut down

47 Pump #1 fault

Evap. water pump run contact opens while Unit shut down

the pump has received a command to be on

Pump overheat, incorrect pump

connection

48 Pump #2 fault

As above

Unit shut down

Manual

As above

49 CCN emergency stop

CCN command received to shutdown the

unit

Network command

50 Loss of communication with

The unit is controlled by a System Manager Unit returns to

and communication with this module is lost autonomous operating

Automatic when communication is re-

established

Defective CCN bus wiring or system

module failure

System Manager

for more than 2 minutes

mode

51 Communication failure with the The master/slave link is broken due to a

As above

Automatic

As above

master or the slave unit

loss of communication between the two

units for more than 2 minutes

52 Initial factory configuration

All factory parameters are zero

Unit prevented to start

As above

No factory configuration

required

53 Illegal factory configuration

Wrong factory configuration

Automatic

Factory configuration error

54 Master/slave configuration error Wrong master/slave configuration

Master/slave control

disabled

Master or slave configuration error

Maintenance alerts

A maintenance alert is active

None

Manual

55-2 Water loop flow rate too low

55-4 Maintenance delay, pump 1,

elapsed

55-5 Maintenance delay, pump 2,

elapsed

55-6 Maintenance delay, water filter,

elapsed

Order No. 13444-76, 06.2005. Supersedes order No.: 13429-76, 06.2004.

Manufacturer reserves the right to change any product specification without notice.

Manufactured by: Carrier s.a., Montluel, France.

Printed in the Netherlands on chlorine-free paper.

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