1F85RF-275 Thermostat and
Wireless Remote Sensor Kit
Save these instructions
for future use!
Automatic Heat/Cool Changeover Thermostat for Single Stage/
Multi-Stage/Heat Pump Systems with Wireless Remote Sensor
Installation and Operating Instructions for Model:
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS
CAREFULLYBEFOREINSTALLINGOROPERATINGTHIS
CONTROLCOULDCAUSEPERSONALINJURYAND/OR
PROPERTYDAMAGE.
Model
Programming Choices
Non-Programmable 5/1/1 Day
1F85RF-270
F145RF-1328
Wireless Remote Sensor
APPLICATIONS
THERMOSTATAPPLICATIONGUIDE
Description
Heat Pump (No Auxiliary or Emergency Heat)
Heat Pump (with Auxiliary or Emergency Heat)
Standard Heat & Cooling Systems
Multi-Stage Systems requiring more than
One Call for Heat or Cool
Yes
Yes
Yes
Yes
Standard Heat Only Systems
Yes
No
Millivolt Heat Only Systems – Floor or Wall Furnaces
Standard Central Air Conditioning
Gas or Oil Heat
Yes
Yes
Yes
* Yes
No
1F85RF-270
Electric Furnace
Hydronic (Hot Water) Zone Heat – 2 Wires
Hydronic (Hot Water) Zone Heat – 3 Wires
Wireless Remote Sensor
* Common Connection Required
SPECIFICATIONS
Thermostat:
Remote Sensor:
Electrical Ratings .......................... 20 to 30 VAC 50/60 Hz
0.2 to 0.6 Amps per Load
(Y1, E/W1, G)
This device complies with Part 15 of the FCC Rules, Operation
is subject to the following two conditions: (1) this device may
not cause harmful interference, and (2) this device must accept
any interference received, including interference that may cause
undesired operation.
1.5 Amps (Y2, W2, O, B
Load per terminal)
1.5 Amps Max
(All terminals combined)
Setpoint Range .............................. 45 to 90°F (7 to 32°C)
Rated Differential (Single Stage)... Heat 0.6° or 1.5°F, Cool 1.2°F
Rated Differential (Multi-Stage)..... Heat 0.6° or 1.5°F, Cool 1.2°F
Rated Differential (Heat Pump)..... Heat & Cool 0.75° or 1.2°F
Operating Ambient ........................ 32 to +105°F (0 to +41°C)
Operating Humidity ....................... 90% non-condensing max.
Shipping Temp. Range.................. -4 to +150°F (-20 to +65°C)
Thermostat Dimensions ............... 3-3/4"H x 6"W x 1-1/4"D
Maximum Wireless Remote Sensors .....1 indoor, 1 outdoor
Operating Range ....................................45 to 90°F (7 to 32°C)
Operating Humidity Range .....................0 to 90% RH
(non-condensing)
Dimensions .............................................2-5/8"H x 4-1/4"W x 7/8"D
* Max. Distance from Thermostat ..........200 feet
* Distance shown is for a typical application. Distances may vary in
some applications because obstacles that block the signal path
may affect the strength of the signal.
ATTENTION:MERCURYNOTICE
This product does not contain mercury. However, this prod-
uct may replace a product which contains mercury.
CAUTION
!
To prevent electrical shock and/or equipment dam-
age, disconnect electric power to system at main fuse
or circuit breaker box until installation is complete.
Mercury and products containing mercury must not be dis-
carded in household trash. Do not touch any spilled mercury.
Wearing non-absorbent gloves, clean up any spilled mercury
and place in a sealed container. For proper disposal of a
product containing mercury or a sealed container of spilled
mercury, place it in a suitable shipping container and send it
to:
Index
Page
Installation
2
3
Wiring Connections
Thermostat/Sensor Quick Reference
Installer Configuration Menus
Operating Your Thermostat and Sensor
Programming
4
6
White-Rodgers
2895 Harrison Street
Batesville, AR 72501
9
13
14
Troubleshooting
PART NO. 37-6841B
Replaces 37-6841A
0745
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WIRINGCONNECTIONS
Typical wiring diagrams are provided below for the following systems:
Single Stage Heat/Cool systems
Multi-Stage Heat/Cool systems (No Heat Pump)
Heat Pump system, one compressor or one speed compressor with Aux. Heat
Heat Pump systems, two compressors or two speed compressor with Aux. Heat
Refer to the equipment manufacturers instructions for specific wiring information. After completing the connections configure
the thermostat in the Installer Configuration Menu to match your system type.
Figure 4 – Single Stage (No Heat Pump) Terminal Outputs
W2
E/W1
B
R
*C
Y1
Y2
G
O
L
System
Blower/
Circulator
Energized
Fault
Energized
in Cool
24 Volt
(Common)
Optional
Fan Energized
on Call for
in Heat, Off Indicator
24 Volt
(Hot)
Cool Mode
1st Stage
(Compressor)
Heat
Mode
(Change-
over Valve
for Heat
Pump
Systems
Single Stage
(SS1)
Mode
No Output No Output
Mode
Cool or Fan,
Energized on
Call for Heat if
Elect/Gas
Switch Set to
Electric
(Change-
over Valve
or Damper)
1st Stage
(Heater)
Connection
or Damper) with
Malfunction
Switch
NEUTRAL
24VAC
HOT
120VAC
CLASS II
TRANSFORMER
* The RC/PS switch shown in Figure 1 configures the thermostat for Hardwire or Power Stealing.
The factory setting is RC (Hardwire) and requires a Common connection from the system transformer to the "C" terminal on
the thermostat. If no common wire is available for the thermostat "C" terminal, move the RC/PS switch to PS (Power Steal-
ing). NOTE: If set to PS (Power Stealing), the thermostat "C" terminal must not have a wire connected.
Figure 5 – Multi-Stage (No Heat Pump) Terminal Outputs
W2
E/W1
B
R
*C
Y1
Y2
G
O
L
System
Blower/
Circulator
Energized
Fault
Energized
in Cool
24 Volt
Fan Energized
on Call for
in Heat, Off Indicator
24 Volt
(Hot)
Heat
(Common) Cool Mode
Cool Mode Heat
2nd Stage Mode
Mode
(Change-
over Valve
for Heat
Pump
Systems
Multi-Stage
(MS2)
Mode
Mode
Optional
Connection
1st Stage
Cool or Fan,
Energized on
Call for Heat if
Elect/Gas
Switch Set to
Electric
(Change-
over Valve
or Damper)
(Compressor 1) (Compressor 2)
1st Stage
2nd Stage
or Damper) with
Malfunction
Switch
NEUTRAL
24VAC
HOT
120VAC
CLASS II
TRANSFORMER
* The RC/PS switch shown in Figure 1 configures the thermostat for Hardwire or Power Stealing.
The factory setting is RC (Hardwire) and requires a Common connection from the system transformer to the "C" terminal on
the thermostat. If no common wire is available for the thermostat "C" terminal, move the RC/PS switch to PS (Power Steal-
ing). NOTE: If set to PS (Power Stealing), the thermostat "C" terminal must not have a wire connected.
Figure 6 – Heat Pump Terminal Outputs
W2
E/W1
B
R
*C
Y2
G
O
L
Y1
System
Heat
Blower/
Heat Pump 1
(HP1)
Mode
Circulator
2nd Stage.
Emergency
Mode 2nd
Stage
Energized
Fault
Fan Energized Energized
No Output
Single
24 Volt
on Call for
in Cool
in Heat, Off, Indicator
Emergency for Heat
Compressor
Heat Pump
24 Volt
(Hot)
(Common) Heat Mode-
Heat/Cool
Mode
Emergency
Mode
Optional
Connection Cool Mode-
1st Stage
1st Stage
or Fan,
Mode
Pump
(Change-
Heat
Mode
3rd Stage.
Emergency
Mode 2nd
Heat Pump 2
1st Stage
Heat Mode-
2nd Stage
Cool Mode-
2nd Stage
(Change-
Systems
over Valve)
Note: Set
(HP2)
over Valve) with
Elect/Gas
(Compressor 1)
Two
Malfunction
Switch
switch for
Compressor
or Two Speed
Compressor
Emergency
Mode Heat Type
(Compressor 2) Stage
NEUTRAL
24VAC
HOT
120VAC
CLASS II
TRANSFORMER
* The RC/PS switch shown in Figure 1 configures the thermostat for Hardwire or Power Stealing.
The factory setting is RC (Hardwire) and requires a Common connection from the system transformer to the "C" terminal on
the thermostat. If no common wire is available for the thermostat "C" terminal, move the RC/PS switch to PS (Power Steal-
ing). NOTE: If set to PS (Power Stealing), the thermostat "C" terminal must not have a wire connected.
3
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THERMOSTAT/REMOTESENSORQUICKREFERENCE
Before operating the thermostat, familiarize yourself with the
display and button functions. Both thermostat and remote
sensor consist of two parts: the cover and the base. To remove
a cover, pull it straight out from the base. To replace a cover, line
it up with the base and press until the cover snaps into place on
the base.
2
The Thermostat Buttons and Switches and Display
Raises and lowers the temperature setting.
1
2
Light flashes every 20 seconds indicating acceptable
signal reception from indoor or outdoor remote sensor.
5
4
Buttons for setting time (Time), programming (Prgm),
running program (Run) and bypassing program to
hold a constant temperature (Hold).
3
6
7
SYSTEM button (COOL, AUTO, HEAT, OFF, EMER
heat pump systems only).
4
8
9
FAN switch (ON, AUTO).
5
6
10
Displays the active temperature sensor (outside,
remote, local) and its sensed temperature.
Displays ( ) when in keypad lockout mode.
Indicates day of the week.
7
8
9
12
15
11
13
Indicates the thermostat mode information:
"HOLD" alternates with the system mode (see item 12)
if the HOLD button is pressed to bypass the program
and maintain a constant temperature.
14
Displays currently programmed set temperature (blank
when SYSTEM is OFF).
10
11
16
Alternately displays the current time and the tempera-
ture average of sensors (thermostat [local] and/or
indoor remote) turned on.
17
Figure 7 – Thermostat display, buttons and switches
18
"HEAT" is displayed when set to heating,
"COOL" is displayed when set to cooling,
"AUTO" is displayed when set for automatic change-
over between heating and cooling.
When "AUTO" is displayed, the currently active mode
(Heat or Cool) will also display.
12
Displays "LR" when the limited range feature is
activated. Limited range limits the temperature the
thermostat can be set to.
14
"EMER" is displayed flashing (heat pump systems
only) when the thermostat is set to the Emergency
Mode. Emergency is used to bypass the heat pump
and use only the back-up heating system.
"FLTR" is displayed as a reminder to change or clean
the air filter after system has run for the programmed
filter time period.
Indicates the system is sending a fault signal to the
thermostat "L" terminal. This does not indicate a fault
in the thermostat.
15
Antenna will display for a few seconds when the remote
or outdoor transmitted signal is received.
16
17
18
Stage 1 & 2 indicator.
13
Displays "LOW BATT" when the 2 "AA" batteries are
low and should be replaced.
"STG 1" indicates when the first stage heat or cool is
energized. "STG + 2" indicates when the second stage
heat or cool is energized. "+2" blinking indicates
Auxiliary Heat stages are energized on Heat Pump
Systems.
Indicates the current signal strength level of the remote
temperature system. Signal strength level is low (one
bar on), medium (two bars on) or high (three bars on).
The remote will operate with 1 bar showing.
4
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THERMOSTAT/SENSORQUICKREFERENCE
The Sensor Buttons and Display
Figure 8 – Remote Sensor display and buttons
Raises the setting.
1
2
3
Lowers the setting.
1
2
Sensed temperature from –40 to 140°F with °F and °C
indicator
Channel identification A B C O indicator
4
5
Normal Operation
9 bar comfort adjust graph with H (hotter) and C (cooler)
3
Transmission occurrence indicator
Keypad lockout indicator
6
7
o
6
4
5
Calibrate temperature offset indicator
Learn mode activated indicator
Low battery indicator
8
A
9
10
11
12
Temperature offset used when hold time is active
Configuration Items
Alternates PWR and on to indicate normal operation
3
with display turned OFF
5
o
H
C
6
7
LOCK
ABCO
CALIB
4
8
5
PWR HLD BATT LEARN
5
12
10
9
11
5
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THERMOSTAT CONFIGURATION MENU
INSTALLER/CONFIGURATIONMENU
Press the System button until OFF is displayed, then press the
Press
Button(s) (Factory Default)
and
simultaneously
Comments
Step
1
to select
System
MS2
SS1, HP2, HP1
Selects Single stage, Multi-stage, or Heat Pump
(Single stage or 2-stage) system configuration
2
System
LER (OFF)
LER (ON)
Selects learn mode OFF or ON
3
4
System
System
System
System
System
System
System
System
System
System
System
System
OUTSIDE(OFF)
REMOTE(OFF)
LOCAL (ON)
CH(0)
OUTSIDE(ON)
REMOTE(ON)
LOCAL (OFF)
1 to 9
Selects OUTSIDE sensor OFF or ON
Selects REMOTE (indoor) sensor OFF or ON
Selects LOCAL sensor ON or OFF
5
6
Select Receiver frequency offset
7
PRG 4
PRG 0, PRG 2
EMR(OFF)
Selects Programmable Periods
8
EMR(ON)
Selects Energy Management Recovery OFF or ON
Selects Fast or Slow cycle selection
9
CR HEAT COOL (FA)
CL (OFF)
SL
10
11
12
13
14
CL (ON)
Selects Compressor Lockout CL OFF or ON
Selects Backlight Display ON or OFF
CdL (ON)
CdL (OFF)
FA HEAT COOL (ON)
0 FLTR
FA HEAT COOL (OFF)
0–1950 (increments of 50)
4 LO to 4 HI
Selects Fast Second Stage ON or OFF
Selects filter replacement run time.0 =Disabled
Selects Temperature Display Adjustment 4 LO 4 HI
0 F
(Room Temperature)
15
16
System
System
4:00 HOLD
0:00 to 8:00
(Increments of 15 minutes)
Selects Temporary Program Override Time
0:00 =Disabled
F
C
For C selection
Selects temperature display as F° or C°
17
18
19
20
21
System
System
System
System
LR HEAT (90)
LR COOL (45)
CA (OFF)
LR 62 to LR 89
LR 46 to LR 82
CA (ON)
Selects Limited HEAT range
Selects Limited COOL range
Selects Comfort Alert Lock
Selects Buttonpad Lockout
OFF LOCK
0 00 LOCK
ON LOCK
001 to 999
Selects Buttonpad lockout combination number
Press System to set code
Run
Returns to the OFF mode
2) Select Learn Mode On or Off – Selecting LER On
enables the learn mode of the thermostat receiver. Your
thermostat is configured at the factory to recognize the
remote sensor shipped with it. The Learn Mode Option is
used only when required as described in Learn Mode
Option.
3) Selects OUTSIDE sensor OFF or ON – Selecting
OUTSIDE ON enables the thermostat to read a wireless
outdoor temperature sensor that has been configured for
Sensor O in the Learn Mode. This allows the thermostat
to display the outdoor temperature reading.
4) Selects REMOTE sensor OFF or ON – Selecting
REMOTE ON allows the thermostat to sense an indoor
remote sensor that has been set-up the Learn mode. The
maximum number of Indoor Remote Sensors is 1
configured to sensor A, B or C.
5) Selects LOCAL sensor ON or OFF – Selecting LOCAL
ON allows the thermostat to use the onboard temperature
sensor exclusively or for averaging with the remote
sensor readings. To control temperature using only the
The configuration menu allows you to set certain thermostat
operating characteristics to your system or personal require-
ments.
Set SYSTEM button to OFF, then simultaneously press
and
to enter configuration menu. The display will
show the first item in the configuration menu.
The configuration menu table summarizes the configuration
options. An explanation of each option follows.
Press SYSTEM to change to the next menu item. To exit the
menu and return to the program operation, pressRUN. If no
keys are pressed within fifteen minutes, the thermostat will
revert to normal operation.
1) Single Stage, Multi-stage or Heat Pump Configuration
This menu item requires you configure the thermostat to
match your system. Choose your system option from the
table below:
System Type
Select Option
SS1
Single Stage Heat/Cool systems
indoor remote sensor temperature(s), use the
buttons to select LOCAL OFF.
or
Multi-Stage Heat/Cool systems (No Heat Pump)
Heat Pump system, 1 compressor or 1 speed compressor
Heat Pump systems, 2 compressors or 2 speed compressor
MS2
HP1
6) Select Receiver frequency offset – This option allows
you to select a different channel than the factory default
for communication between the thermostat and remote
sensor. Note: If a different channel is selected on the
thermostat it must also be changed to the same
HP2
The thermostat is factory defaulted to MS2. To select a
different option, press the
the choices.
or
key to scroll through
6
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THERMOSTAT CONFIGURATION MENU
setting on the remote. This is only used in areas where
there are other wireless devices or electronic equipment
that interfere with the default frequency of the thermostat/
remote sensor communication.
4° higher or lower. Your thermostat was accurately
calibrated at the factory but you have the option to
change the display temperature to match your previous
thermostat. The current or adjusted room temperature will
be displayed on the left side of the display.
7) Programmable Periods – This control can be config-
ured for 4, 2 or 0 programmable periods. The display
indicates "PRG 4" in the display as default. The program-
mable periods can be changed to 2 or 0 by pressing the
15)Select Temporary Program Override Time – The thermo-
stat can hold any temperature you set it to for the amount
of time you select on this option. Your choices are 0:00 to
8:00 hours in 15 minute increments. 0:00 means disable.
Example:
or
keys. With "PRG 0" selected for non-program-
mable, SYSTEM key selection will skip EMR (item 8) and
temporary program override (item 15).
1. You have selected 3:00 hours for the Temporary Pro-
gram Override time period.
2. With the thermostat set to Heat or Cool, press HOLD
for approximately 5 seconds until "HOLD time 3:00"
(indicating 3 hours) appears as a setting reminder.
3. After releasing the button, "HOLD" on the display will
blink.
8) Select Energy Management Recovery OFF or ON –
Energy Management Recovery (EMR) causes the
thermostat to start heating or cooling early to make the
building temperature reach the program setpoint at the
time you specify. Heating will start 5 minutes early for
every 1° of temperature required to reach setpoint.
Example: You select EMR and have your heating
programmed to 65° at night and 70° at 7 AM. If the
building temperature is 65° the difference between 65°
and 70° is 5°. Allowing 5 minutes per degree the thermo-
stat setpoint will change to 70° at 6:35 AM. Cooling allows
more time per degree because it takes longer to reach
temperature.
9) Fast or Slow Cycle Selection – The factory default
setting is fast cycle, which cycles 1st stage at approxi-
mately 1.2°F and 2nd stage 0.75°F. If you prefer slow
cycle, press the temperature key to change to SL. The 1st
stage and 2nd stage would be 1.5°F and 1.2°F respec-
tively.
10)Select Compressor Lockout CL OFF or ON – Selecting
CL ON will cause the thermostat to wait 5 minutes before
turning on the compressor if the heating and cooling
system loses power. It will also wait 5 minutes minimum
between cooling and heating cycles. This is intended to
help protect the compressor from short cycling. Some
newer compressors already have a time delay built in and
do not require this feature. Your compressor manufac-
turer can tell you if the lockout feature is already present
in their system. When the thermostat compressor time
delay occurs it will flash the setpoint for about five
minutes.
11)Select Backlight Display – The display backlight
improves display contrast in low lighting conditions. When
the "C" terminal is powered, selecting backlight CdL ON
will keep the light on continuously. Select backlight OFF
will keep the light on momentarily after any key is
pressed. When the "C" terminal is not powered, the light
will be on momentarily after any key is pressed no matter
the backlight is selected ON or OFF.
4. Use
or
to set the temperature to your prefer
ence. The thermostat will maintain this temperature
setting for 3 hours with "HOLD" blinking to remind you
it is in Temporary Hold. After 3 hours, the thermostat
will go back to the program temperature and "HOLD"
will no longer blink or display.
16)Select F° or C° Readout – Changes the display readout
to Celsius or Fahrenheit as required.
17)Limited Heat Range – This feature provides a maximum
setpoint temperature for heat. The default setting is 90°F. It
can be changed between 62°F and 89°F by pressing the
or
key.
18)Limited Cool Range – This feature provides a minimum
setpoint temperature for cool. The default setting is 45°F. It
can be changed between 46°F and 82°F by pressing the
or
key.
19)Comfort Alert – This feature is available in Passive
mode on this thermostat. If a Comfort Alert module is
connected, the thermostat will receive and flash the fault
codes from the Comfort Alert module.
20 & 21) Keypad Lockout – This menu selection will
display lock ( ) icon. The
and
are used to toggle
the function and display the lock icon and OFF (keypad
not locked out, default) indicating in the time digits to the
lock icon and ON (keypad locked out). When the keypad
lockout function is enabled (ON), and the SYSTEM button
is pressed again, the display will indicate the number 000
(default, still disabled) in the time digits. The
and
are used to set the combination number from 0 to 999. If
a combination of 000 is selected and the SYSTEM button
is pressed, the menu will be exited and keypad will not be
locked. If 1 to 999 is selected and the SYSTEM button is
pressed again, the combination is locked into non-volatile
memory and the menu is exited. The lock icon (to
designate keypad locked with a valid combination) will
display when the menu is exited. The SYSTEM button will
operate for 10 seconds after the menu mode is exited to
allow the user to change the mode from OFF to the
desired system mode.
12)Select Fast Second Stage On or OFF – For Heat:
During normal operation if the setpoint temperature is
manually raised by 3°F or more above the actual tem-
perature with the
button, and the fast second stage
feature is enabled, FA ON, the second stage will energize
immediately.
While the keypad is locked out, a simultaneous press of
and
will enter the menu item from any mode
instead of only OFF mode. When the menu is entered
with the keypad lockout feature enabled, the first menu
item displayed is the combination code 0. The
or
13)Select filter replacement run time – The thermostat will
display "FLTR" after a set time of operation. This is a
reminder to change or clean your air filter. This time can
be set from 0 to 1950 hours in 50 hour increments. A
selection of 0 will cancel this feature. When "FLTR" is
displayed, you can clear it by pressing HOLD and RUN at
the same time. This resets the timer and starts counting
the hours until the next filter change. Contact your system
manufacturer for a specific replacement/maintenance
interval.
keys are used to set the combination unlock number from
0 to 999. If the unlock number matches exactly with the
combination lock number stored in memory when the
SYSTEM button is pressed, the keypad is unlocked and
the lock icon is removed. If the unlock number does not
match when the SYSTEM button is pressed, menu is
exited and the keypad remains disabled.
To reset the combination code and unlock the keypad if
the code is forgotten, see troubleshooting section, page
16.
14)Select Temperature Display Adjustment 4 LO to 4 HI –
Allows you to adjust the room temperature display up to
7
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REMOTE SENSOR CONFIGURATION MENU
The configuration menus allow you to set certain remote sensor operating characteristics to your system or personal require-
ments. Two configuration menus are available, User Configuration and Installer Configuration.
User Configuration Menu
Momentarily press
items press the
and
and
keys at the same time and release to enter the User menu. To scroll through the menu
keys at the same time. To change the item option press or . To exit the menu
scroll through all menu items. If no buttons are pushed for 3 minutes, the control will also return to normal operation.
The User Configuration Menu table summarizes the configuration options. An explanation of each option follows.
User configuration menu
Step Press button(s)
to scroll menu
Displayed
Press
or
Comments
(factory default)
to change option
on
1
2
3
4
5
6
7
and
and
and
and
and
and
and
LOCK
(OF)
HLD
(4h)
Select keypad lockout OFF or ON
1 to 8 hrs
Select temporary adjust temperature
in 1 hour increments hold time
1-4 bars (1°-4°) C to Select temperature display adjustment
CALIB
(Sensed Temperature) 1-4 bars (1°-4°) H
dF
(on)
dL
(on)
oF
higher or lower
Select display temperature OFF or ON
OF
OF
Select display backlight OFF or ON
Select temperature display to F or C
oC
(Sensed Temperature)
_____
_____
Exits user menu and returns to normal
operation
1) Select keypad lockout OFF or ON – Selecting LOCK
ON will cause the keypad to be locked in the normal
change the display temperature to match your previous
sensor or thermostat.
operation mode. This prevents the
being used to adjust temperature. The display will
indicate "LOCK" when the keypad is locked. If LOCK OF
is selected, the and keys can still be used.
When the keypad is locked, the and keys can
and
from
4) Select display temperature OFF or ON – Selecting OF
allows you to disable displaying the sensed temperature.
Instead of the temperature, the sensor will display "PWR"
with the word on to indicate normal operation.
still be pressed at the same time to enter the configura-
tion menu.
5) Select display backlight OFF or ON -. The display
backlight improves display contrast in low lighting
conditions. Selecting dL on will keep the light on for a
short period of time after any key is pressed. Selecting
OF will keep the light off.
2) Select temporary adjust temperature hold time –
Selects the length of time for the temporary temperature
adjustment. Hold time default is 4 hours and can be set
from 1 to 8 hours in 1 hour increments.
o
6) Select temperature display to oF or C - Changes the
display readout to Celsius or Fahrenheit as required.
3) Select temperature display adjustment higher or
lower – allows you to adjust the room temperature
display 1° to 4° higher or lower. Your sensor was accu-
rately calibrated at the factory but you have the option to
8
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REMOTE SENSOR CONFIGURATION MENU
Installer Configuration Menu
Your thermostat is configured at the factory to recognize the remote sensor it is shipped with as indoor sensor A. The Installer
Configuration Menu is used only when adding or replacing a remote sensor or selecting a frequency offset.
Press
and
buttons for a minimum of five seconds at the same time to enter the Installer menu. To scroll through
and buttons at the same time. To change the item option, press or
the menu items, momentarily press the
. To exit the menu scroll through all menu items. If no buttons are pushed for 3 minutes, the control will return to normal
operation. The Installer Configuration Menu table summarizes the configuration options. An explanation of each option
follows.
Installer Configuration Menu
Step Press button(s)
to scroll menu
Displayed
Press
or
Comments
(factory default)
LEARN
to change options
on
1
2
3
4
and
and
and
and
Select learn mode OFF or ON
(OF)
CH
(A)
C
(0)
B, C, O
Select sensor identification as A, B, C or O
Select transmitter frequency offset
1 through 9
_____
_____
Exit installer menu and return to normal
operation
1) Select learn mode OFF or ON – Selecting LEARN on
enables the sensors learning mode. In the learning mode
the sensor will transmit identification information once
every 10 seconds for a period of 10 minutes. The LEARN
icon will be displayed during the learning mode. The
transmitter icon will be displayed for a short period of time
with each transmission. See Learn Mode Option.
3) Select transmitter frequency offset – The sensor’s
transmitter operates on 418MHz radio frequency by
default. Interference may occur if another device or
equipment operates on the same frequency. The interfer-
ence may degrade the communications between the
sensor and the thermostat. To avoid interference, you
may select a different radio frequency for your sensor.
This menu item allows you to select a radio frequency
offset from 1 to 9MHz from the base frequency. For
example; if the you selected an offset of 4, the transmitter
radio frequency will be 418MHz + 4MHz = 422MHz. Note
that the sensor’s transmitter and the thermostat’s receiver
must operate on the same frequency to communicate. To
change thermostat’s receiver frequency please refer to
Thermostat Configuration Menu.
2) Select sensor identification from A to O – For multiple
sensors systems, each sensor must have a designated
identification. The thermostat can operate with one indoor
sensor and one outdoor sensor. For indoor sensors you
may select A, B or C. For outdoor sensor you must select
O.
OPERATING YOUR THERMOSTAT AND REMOTE SENSOR
Heating System
Check Thermostat Operation
1. Press SYSTEM button to select HEAT. If the auxiliary
heating system has a standing pilot, be sure to light it.
2. Press
NOTE
to adjust thermostat setting to 1° above room
To prevent static discharge problems, touch side of
thermostat to release static build-up before touching
any keys.
temperature. The heat pump system should begin to
operate. The display should show "STG1". However, if the
system configuration is set to HP1 or HP2 and setpoint
temperature display is flashing, the 5 minute compressor
lockout feature is operating (see Configuration menu,
item 10).
If at any time during testing your system does not operate
properly, contact a qualified service person.
Fan Operation
If your system does not have a G terminal connection, skip to
Heating System.
3. Adjust temperature setting to 3° above room temperature.
If your system configuration is set at MS2, HP2 or HP1,
the auxiliary heat system should begin to operate and
the display will show "STG 1+2".
1. Turn on power to system.
2. Move FAN switch to ON position. The blower should
begin to operate.
4. Press
to adjust the thermostat below room tempera-
ture. The heating system should stop operating.
3. Move FAN switch to AUTO position. The blower should
stop immediately.
CAUTION
!
Do not allow the compressor to run unless the compres-
sor oil heaters have been operational for 6 hours and
the system has not been operational for at least 5
minutes.
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OPERATING YOUR THERMOSTAT AND REMOTE SENSOR
Emergency System
Automatic System Changeover
EMER bypasses the Heat Pump to use the heat source wired When the thermostat is in the AUTO mode, the thermostat
to terminal E/W1 on the thermostat. EMER is typically used
when compressor operation is not desired, or you prefer
back-up heat only.
1. Press SYSTEM button to select EMER. "EMER" will flash
on the display.
will call for heat or cool depending on the room temperature.
The setpoint temperature displayed will be the last mode
called. If the last system cycle was heat, the HEAT setpoint
will be displayed. If the room temperature raises above the
HEAT setpoint and the COOL setpoint and a call for cool is
required, the temperature displayed will change to be the
COOL setpoint.
2. Press
to adjust thermostat setting above room
temperature. The Emergency heating system will begin to
operate. The display will show "STG1" flashing "EMER"
and "HEAT" to indicate that the Emergency system is
operating.
If you manually override the temperature in AUTO and it
does not switch to the mode (HEAT or COOL) that you want,
press the
and
keys once, at the same time to switch
3. Press
to adjust the thermostat below room tempera-
ture. The Emergency heating system should stop operat-
ing.
modes. At the end of your override time it will revert back to
AUTO.
Second Stage Time Delay
CAUTION
To prevent compressor and/or property damage, if the
outdoor temperature is below 50°F, DO NOT operate
the cooling system.
!
Your thermostat is designed to determine the optimum time
to activate the second stage. Simply raising the temperature
in heating or lowering it in cooling will not always force the
thermostat to bring the second stage on quickly. If the fast
second stage option in the configuration menu (step 12) is
set to "OFF", there is a delay from 0-30 minutes depending
on the performance of the first stage of the system.
Cooling System
1. Press SYSTEM button to select COOL.
2. Press
to adjust thermostat setting below room
EXAMPLE: For the last 2 hours the thermostat is set on 70°
and the room temperature is 70° with the equipment using
only the first stage of heat. Since the equipment is keeping
the temperature within 1 degree of setpoint, the thermostat
will delay second stage for a longer time if you manually
raise the temperature or if the room temperature quickly
changes. Once the second stage comes on, it will come on
sooner the next time there is a difference between the
setpoint and the room temperature. The net effect of the
staging program is that when the first stage is capable of
holding temperature, the second stage will delay longer.
temperature. The blower should come on immediately on
high speed, followed by cold air circulation. The display
should show "STG1". If the setpoint temperature display
is flashing, the compressor lockout feature is operating
(see Configuration menu, item 5).
3. Adjust temperature setting to 3° below room temperature.
The second stage cooling should begin to operate and
the display should show "STG 1+2".
4. Press
to adjust the temperature setting above room
temperature. The cooling system should stop operating.
When the thermostat calculates that first stage cannot make
temperature in a reasonable time, the second stage will
come on sooner. This built in function automatically opti-
mizes the use of additional stages of heat or cool.
Remote Temperature Sensor Information
on the Thermostat Display
During normal operation, the upper left of the thermostat
display changes every 6 seconds to show the temperatures
at the sensors that are turned on in the configuration menu.
The sensors are the thermostat (LOCAL), the outdoor
remote sensor (OUTDOOR) and the indoor remote sensor
(REMOTE). Below that, the display alternately shows the
time and temperature average of the sensors that are turned
on.
The word "SIGNAL" is shown along with number of bars (1-
3) indicating the relative signal strength. More bars mean
better reception. The antenna icon also displays for few
seconds when information from the remote sensor is
received.
If the thermostat does not receive an update signal from an
enabled remote sensor (REMOTE or OUTDOOR) for 30
minutes or more, the thermostat will display FAULT and
ANTENNA icons continuously. The REMOTE or OUTDOOR
sensor that has communication with the thermostat inter-
rupted will display a temperature of 00. If the active sensor is
the REMOTE, the thermostat will revert back to LOCAL
sense only mode.
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OPERATING YOUR THERMOSTAT AND REMOTE SENSOR
70°F then:
Learn Mode Option
If weight selected is HI , then the averaged temperature is
Your thermostat is configured at the factory to recognize the
wireless remote sensor shipped with it. This sensor is stored
as Sensor A. The Learn Mode Option must be performed on
the thermostat and wireless remote sensor if:
(2 x (80°F) + 4 x (70°F))/ 6 = 73.3°F.
If weight selected is A , then the averaged temperature is
(2 x (80°F) + 2 x (70°F))/ 4 = 75°F.
If weight selected is LO , then the averaged temperature is
(2 x (80°F) + 1 x (70°F))/ 3 = 76.6°F.
The example above shows that the weight selected would
prioritize the overall averaged temperature between the two
sensors. The high weight selection caused the remote
sensor to carry more weight in the calculated temperature
average than the local sensor. The low weight selection
caused the remote sensor to carry less weight in the calcu-
lated temperature average than the local sensor.
• A wireless remote sensor is added to another channel.
• The wireless remote sensor is replaced.
• The thermostat is replaced.
During the Learn Mode, the wireless remote sensor will
transmit identification information every ten seconds for ten
minutes. In this ten-minute period, the display will show
“LEARN” and the antenna icon will show for a short time with
each transmission. The thermostat will be receiving the
transmitted identification information.
Choose the Fan Setting (Auto or On)
Set the FAN Switch to Auto or On.
Fan Auto is the most commonly selected setting and runs
the fan only when the heating or cooling system is on.
Fan On runs the fan continuously for increased air circulation
or to allow additional air cleaning.
To perform the Learn Mode on the thermostat and sensor:
Remove the batteries from all wireless remote sensors in
the same building except the sensor you are going to put
into the Learn Mode. This will prevent interference from
the other sensors.
Be sure that the remote sensor is set for the proper
identification (A, B or C for indoor or O for outdoor) and
the thermostat and remote sensor are set to the same
frequency.
Choose the System Setting
(Heat, Off, Cool, Auto, Emer)
Press the SYSTEM button to select:
Heat: Thermostat controls only the heating system.
Off: Heating and Cooling systems are off.
On the thermostat, enter the thermostat Configuration
Menu by pressing the SYSTEM button to OFF and then
momentarily pressing
and
at the same time.
Cool: Thermostat controls only the cooling system.
Auto: Auto Changeover is used in areas where both heating
and cooling may be required on the same day. AUTO allows
the thermostat to automatically select heating or cooling
depending on the indoor temperature and the selected heat
and cool temperatures. When using AUTO, be sure to set the
Cooling temperatures more than 1° Fahrenheit higher than
the heating temperature.
Momentarily press SYSTEM button to advance to step 2
of the Configuration Menu. The display will show “LER”
and “OFF”.
Momentarily press
or
to select “LER” and “On”.
The display will flash “LER” with “On” displayed con-
stantly.
On the wireless remote sensor, enter the Installer
Configuration Menu by pressing
and
for five
seconds. The remote sensor display will change to
“LEARN OF”.
Emer: Setting is available only when the thermostat is
configured in HP1 or HP2 mode.
Momentarily press
or
to select “LEARN On”.
Manual Operation for
Non-Programmable Thermostats
Press the SYSTEM button to select Heat or Cool and use
After the thermostat has successfully identified the
remote sensor in approximately one minute, the sensor
information will be stored and the thermostat display will
change to “LER” and “OK”.
the
or
buttons to adjust the temperature to your
desired setting. After selecting your desired settings you can
also press the SYSTEM button to select AUTO to allow
the thermostat to automatically change between Heat and
Cool.
If the identification sequence is not successful after ten
minutes, the thermostat display will show “LER”, “Fault” and
the antenna icon. If the Learn Mode is unsuccessful, refer to
Troubleshooting section, Antenna + Fault.
If you are replacing a thermostat that has more than one
wireless remote sensor, the Learn Mode must be performed
for each sensor. Once a sensor has been identified, it will
remain in the thermostat memory until the Learn Mode is
performed again and a different sensor for the stored
channel is identified.
Manual Operation (Bypassing the Program)
Programmable Thermostats
Press
or
and adjust the temperature wherever you like.
Then press HOLD. This will override the program. The HOLD
feature bypasses the program and allows you to adjust the
temperature manually, as needed. Whatever temperature you
set in HOLD will be maintained 24 hours a day, until you
manually change the temperature or press RUN to cancel
HOLD and resume the programmed schedule.
Wireless Remote Indoor
Temperature Averaging
Your thermostat is designed to sense the temperature of the
indoor remote sensor and average or weight it with the local
sensor in the thermostat for each program period. The
averaging will only be active when both the local and the
indoor remote sensors are functional and turned on in the
configuration menu. When the thermostat is placed in view
schedule mode (press PRGM once), the weight of the indoor
remote sensor will be shown on the left side of the display
when HOLD button is pressed. The weighting classes of the
indoor remote sensor are designated as A (default for
average weight), HI (high weight), or LO (low weight). The HI
weight is two times the weight of the average weight. The A
weight is two times the weight of the LO weight. The weight
of the local sensor is fixed to A (average weight). The actual
temperature displayed, in the clock digits, in the normal
operation mode is the mathematical weighted sum of the
enabled functioning sensors. For example, if the local sensed
temperature is 80°F and the remote sensed temperature is
Program Override (Temporary Override)
Press
or
buttons to adjust the temperature. This will
override the temperature setting for a (default) four hour
override period. The override period can be shortened or
lengthened by adjusting the temporary hold time in the
configuration menu.
Example: If you turn up the heat during the morning pro-
gram, it will be automatically lowered later, when the tempo-
rary hold period ends. To cancel the temporary setting at any
time and return to the program, press RUN.
If the SYSTEM button is pressed to select AUTO the
thermostat will change to Heat or Cool, whichever ran last. If
it switches to heat but you want cool, or it changes to cool
but you want heat, press both
and
buttons simulta-
neously to change to the other mode.
11
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OPERATING YOUR THERMOSTAT AND REMOTE SENSOR
Remote Sensor Operation
The sensor monitors the temperature and sends information
to the thermostat. Updated information is sent to the thermo-
stat when the temperature changes 3/16 degree or more
from the last update.
PROGRAMMINGYOURTHERMOSTAT
This section will help you plan your thermostat's program to
meet your needs. For maximum comfort and efficiency, keep
the following guidelines in mind when planning your program.
• When heating (cooling) your building, program the temper-
atures to be cooler (warmer) when the building is vacant or
during periods of low activity.
Low Battery power: The sensor will display the word LO
along with BATT icon to indicate a low battery power
condition. The 2 "AAA" batteries must be replaced to ensure
a proper sensor performance. For optimum performance,
replace batteries once a year with new premium brand
alkaline batteries such as Duracell® or Energizer®.
• During early morning hours, the need for cooling is usually
minimal.
Planning Your Program
Look at the factory preprogrammed times and temperatures
shown in the sample schedule. If this program will suit your
needs, simply set the time and day and press the RUN
button to begin running the factory preset program.
Increasing the sensor setpoint decreases the displayed
remote temperature shown on the thermostat by 1°F per bar.
This will lower the actual calculated room temperature by up
to 4°F. Decreasing the sensor setpoint increases the
displayed remote temperature and will raise the actual
calculated room temperature. The table below shows how
the adjustment on the sensor affects the displayed remote
temperature on the thermostat and the calculated average
temperature.
If you want to change the preprogrammed times and tem-
peratures, follow these steps.
Determine the time periods and temperatures for your
program. You must program four periods for each day.
However, you may use the same heating and cooling
temperatures for consecutive time periods. You can choose
start times, heating temperatures, and cooling temperatures
independently (for example, you may select 5:00 AM and 70°
as the weekday 1st period heating start time and tempera-
ture and also choose 7:00 AM and 76° as the weekday 1st
period cooling start time and temperature).
Use the table to plan your program time periods and the
temperatures you want during each period. Fill in the
complete table to have a record of your programs.
Description
Remote Sensor Thermostat Display (Remote) Thermostat Display (Local) Calculated Room Temp.
Setpoint Temp.
Increasing setting decreases room
H +4 bars
Decreases by 4°F to 71°F
Decreases by 3°F to 72°F
Decreases by 2°F to 73°F
Decreases by 1°F to 74°F
70.5°F
71°F
temperature average causing system H +3 bars
to increase temperature.
H +2 bars
H +1 bar
71.5°F
72°F
Remote 75°F
C -1 bar
75°F
74.5°
73°F
75°F
Decreasing setting increases room
temperature causing more of a
demand for Cooling.
Increases by 1°F to 76°F
Increases by 2°F to 77°F
Increases by 3°F to 78°F
Increases by 4°F to 79°F
C -2 bars
C -3 bars
C -4 bars
73.5°F
74°F
74.5°F
FACTORYPROGRAM
SATURDAY (1 DAY)
PERIOD
WEEKDAYS (5 DAYS)
START
TIME
SUNDAY (1 DAY)
START REMOTE
REMOTE
TEMP WEIGHT
START
TIME
REMOTE
TEMP WEIGHT
TIME
TEMP WEIGHT
MORN
DAY
EVE
NITE
MORN
DAY
6:00 AM
8:00 AM
5:00 PM
70 F
62 F
70 F
A
A
A
A
A
A
A
A
6:00 AM
8:00 AM
5:00 PM
70 F
62 F
70 F
A
A
A
A
A
A
A
A
6:00 AM
8:00 AM
5:00 PM
70 F
62 F
70 F
A
A
A
A
A
A
A
A
10:00 PM 62 F
10:00 PM 62 F
10:00 PM 62 F
6:00 AM
8:00 AM
5:00 PM
78 F
85 F
78 F
6:00 AM
8:00 AM
5:00 PM
78 F
85 F
78 F
6:00 AM
8:00 AM
5:00 PM
78 F
85 F
78 F
EVE
NITE
10:00 PM 82 F
10:00 PM 82 F
10:00 PM 82 F
PERSONAL PROGRAM
SATURDAY (1 DAY)
PERIOD
WEEKDAYS (5 DAYS)
START
TIME
SUNDAY (1 DAY)
START
REMOTE
START
TIME
REMOTE
REMOTE
TEMP WEIGHT
TEMP WEIGHT
TIME
TEMP WEIGHT
MORN
DAY
EVE
NITE
MORN
DAY
EVE
NITE
12
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PROGRAMMING
6. Press PRGM once. The currently programmed start time
and setpoint temperature for the 2nd heating program
period will appear.
7. Repeat steps 3 and 5 to select the start time and heating
temperature for the 2nd heating program period.
8. Repeat steps 3 through 6 for the 3rd and 4th heating
program periods.
9. Press PRGM once "SA" (indicating Saturday program)
will appear in the display, along with the start time for the
1st heating period and the currently programmed temp-
erature.
10.Repeat steps 3 through 8 to complete Saturday heating
programming.
Setting the Clock and Day
Set Current Time and Day
1. Press TIME button once. The display will show the hour
only.
EXAMPLE:
2. Press and hold either
or
until you reach the
correct hour and AM/PM designation (AM begins at mid-
night; PM begins at noon). A will indicate for AM. P will
indicate for PM in the minutes digits.
3. Press TIME once again. The display window will show
the minutes only.
11.Press PRGM once to change to "SU" (Sunday) heating
programming and repeat steps 3 through 7 to complete
Sunday programming.
12.When you have completed entering your heating pro-
gram, press RUN.
EXAMPLE:
Enter Cooling Program
4. Press and hold either
correct minutes.
5. Press TIME once again. The display will show the day of
the week.
or
until you reach the
CAUTION
!
If the outside temperature is below 50°F, disconnect
power to the cooling system before programming.
Energizing the air conditioner compressor during
cold weather may cause personal injury or property
damage.
6. Press
week.
or
until you reach the current day of the
7. Press RUN once. The display will show the correct time
and room temperature alternately.
1. Press SYSTEM button to COOL.
2. Follow Enter Heating Program for entering your cooling
program, using your selected cooling times and tempera-
tures.
This thermostat starts the programmed temperature earlier
than the time selected in your program. This allows the
system to reach your setting by the time you specify in your
program. This feature is called EMR (Energy Management
Recovery). If you do not want the thermostat to start early,
you may cancel the EMR feature in the Configuration Menu.
CHECKYOURPROGRAMMING
Follow these steps to check your thermostat programming
one final time before beginning thermostat operation.
1. Press SYSTEM button to HEAT position.
2. Press PRGM to view the 1st weekday heating period
time and temperature. Each time you press PRGM, the
next heating period time and temperature will be display-
ed in sequence for weekday, then Saturday and Sunday
program periods (you may change any time or tempera-
ture during this procedure.
Enter Heating Program
1. Press the SYSTEM button to HEAT.
2. Press PRGM once. "MO TU WE TH FR" (indicating
weekday program) will appear in the display. Also dis-
played are the currently programmed start time for the
1st heating period and the currently programmed temp-
erature (flashing).
3. Press RUN.
EXAMPLE:
4. Press SYSTEM button to COOL position.
5. Repeat step 2 to check cooling program.
6. Press SYSTEM button to HEAT or COOL and press
RUN to begin program operation.
NOTE: Batteries are not required to keep your programming
or menu data. With two optional "AA" batteries installed,
your thermostat will maintain time and continuously
display the temperature during a loss of AC power.
Installed batteries will also allow programming prior to
installation.
This display window shows that for the 1st weekday
period, the start time is 6:00 AM and 68° is the program-
med temperature (this example reflects factory prepro-
gramming.
3. Press
or
to change the displayed temperature
to your selected temperature for the 1st heating program
period.
4. Press TIME once (the programmed time will flash). Press
YOUR THERMOSTAT IS NOW PROGRAMMED AND READY TO
PROVIDE MAXIMUM COMFORT AND EFFICIENCY!
or
until your selected time appears. The time
will change in 15 minute increments. When your selected
time is displayed, press TIME again to return to the
change temperature mode.
5. If both the local and the remote sensors are enabled, then
you may press HOLD button to change the remote sensor
weighting setting. Remote icon will display. The pro-
grammed weight (A, HI or LO) will flash. Press
or
to change the displayed weight to your selected weight
for the 1st heat program period.
13
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TROUBLESHOOTING
Reset Operation
If a voltage spike or static discharge blanks out the display or causes erratic thermostat operation, you can reset the thermo-
stat by removing the wires from terminals R and C and removing batteries for 2 minutes. After resetting the thermostat,
replace the wires and batteries. If the thermostat has been reset and still does not function correctly contact your heating/
cooling service person or place of purchase.
Pressing
and
and the SYSTEM keys at the same time will reset the thermostat to its factory default setting. This will
also clear any limited temperature ranges or keypad lockout settings. Note default system configuration is multistage system
operation.
Possible Cause
Corrective Action
Symptom
1. Blown fuse or tripped circuit breaker.
2. Furnace power switch to OFF.
Replace fuse or reset breaker.
Turn switch to ON.
No Heat/No Cool/No Fan
(common problems)
3. Furnace blower compartment door or
panel loose or not properly installed.
Replace door panel in proper position to engage
safety interlock or door switch.
1. Pilot light not lit.
Re-light pilot.
No Heat
2. SYSTEM Switch not set to HEAT.
Set SYSTEM Switch to HEAT and raise setpoint
above room temperature.
3. Loose connection to thermostat or
system.
Verify thermostat and system wires are securely
attached.
4. Furnace Lock-Out Condition. Heat
may also be intermittent.
Many furnaces have safety devices that shut down
when a lock-out condition occurs. If the heat works
intermittently contact the furnace manufacturer or
local service person for assistance.
5. Heating system requires service or
thermostat requires replacement.
Diagnostic: Set SYSTEM Switch to HEAT and raise
the setpoint above room temperature. Within a few
seconds the thermostat should make a soft click
sound. This sound usually indicates the thermostat
is operating properly. If the thermostat does not
click, try the reset operation listed above. If the
thermostat does not click after being reset contact
your heating and cooling service person or place of
purchase for a replacement. If the thermostat clicks,
contact the furnace manufacturer or a service
person to verify the heating is operating correctly.
1. SYSTEM Switch not set to COOL.
Set SYSTEM Switch to COOL and lower setpoint
below room temperature.
No Cool
2. Loose connection to thermostat or
system.
Verify thermostat and system wires are securely
attached.
3. Cooling system requires service or
thermostat requires replacement.
Same procedure as diagnostic for No Heat condition
except set the thermostat to COOL and lower the
setpoint below the room temperature. There may be
up to a five minute delay before the thermostat
clicks in Cooling.
1. Program or current time(s) set
incorrectly (AM, PM or Day of the
week).
2. Energy Management Recovery
(EMR) starting the program early.
Verify that the AM or PM settings are correct for
each program period and the current time of day.
Also verify the Day of the week is set correctly.
The EMR (Energy Management Recovery) feature
starts early to achieve the temperature it is pro-
grammed for by the time specified in the program.
See the Configuration Menu section to disable
EMR if you do not want the thermostat to start early.
Thermostat does not
Follow Program
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TROUBLESHOOTING
Possible Cause
C
o
r
r
e
c
t
i
v
e
A
c
t
i
o
n
Symptom
In power stealing mode (RC/PS Switch
set to PS), the thermostat draws a small transformer to the "C" terminal on the thermostat
1. Add a common connection from the system
Furnace Inducer Fan,
Blower or Heat Turns On
with No Call for Heat or
does not Turn Off when
Call for Heat Ends
amount of power through the heating
circuit to operate. Some furnace
systems using high impedance input
electronic modules may react to the
current draw and actuate system
components.
and set the RC/PS switch to RC.
2. If the system has a standard cooling contactor
and no common connection is available at the
thermostat, clip jumper W25-W1 and separate the
ends. This prevents the thermostat from drawing
power from the W1 (heating) circuit. If the condition
persists after clipping the jumper, a heating and
cooling service person can install an isolation relay
to the system or add a common wire as mentioned
above.
1. Loss of power from heating/cooling
system to thermostat.
1. Verify the thermostat is operating on AC power by
removing the thermostat batteries. If display goes
blank, AC power is lost.
Antenna + Fault
2. Remote sensor too far from
thermostat.
2. Change remote sensor location.
3. Thermostat or remote sensor set to
different channels or a different
frequency offset.
3. Verify the thermostat and remote sensor are set
to the same channel and frequency offset.
4. Incorrect sensor identification
selected.
4. For indoor sensor, verify sensor identification
selected is A, B or C. For an outdoor sensor, verify
the sensor identification selected is O.
5. Replacement Sensor requires
running learn mode.
5. If the sensor did not come with this thermostat
from the factory, perform the learn procedure for
thermostat and sensor.
6. Remote sensor requires replacement. 6. If the sensor display indicate E0 or E1, replace
the remote sensor.
1. Improper system sizing or improper
heating and cooling distribution
between areas.
2. An uneven change in occupancy
level, sun load or conditioned space
activities (cooking, washing dishes,
showers, etc.) between the areas.
Selecting a high or low priority for the thermostat or
sensor location during program periods can help
even out minor temperature imbalances between
the thermostat and remote sensor locations. This is
also useful for scheduled or predictable events like
occupancy level or sun load during particular times
of the day. If the temperature difference remains
large after assigning priorities, system modification
or zoning may be necessary to balance the tem-
perature distribution.
Temperature Difference
between Thermostat
and Remote Location
1. Possible short in wiring.
2. Possible short in thermostat.
3. Possible short in heat/cool/fan
system.
Check each wire connection to verify they are not
shorted or touching together. No bare wire should
stick out from under terminal screws. Try resetting
the thermostat as described above. If the condition
persists the manufacturer of your system or service
person can instruct you on how to test the Heat/Cool
system for correct operation. If the system operates
correctly, replace the thermostat.
Heat, Cool or Fan
Runs Constantly
4. FAN Switch set to Fan ON.
15
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TROUBLESHOOTING
Possible Cause
Corrective Action
Symptom
1. The location of the thermostat and/or
the size of the Heating System may
be influencing the cycle rate.
Digital thermostats normally provide precise
temperature control and may cycle faster than some
older mechanical models. A faster cycle rate means
the unit turns on and off more frequently but runs for
a shorter time so there is no increase in energy use.
If you would like to increase the cycle time, choose
SL for slow cycle in the menu, step 4. If an accept-
able cycle rate is not achieved as received or by
choosing slow cycle, contact a local service person
for additional suggestions.
Furnace
(Air Conditioner)
Cycles Too Fast
or Too Slow (narrow or
wide temperature swing)
1. Thermostat thermometer setting
requires adjustment.
The thermometer can be adjusted +/- 3 degrees.
See Temperature Display Adjustment in the
Configuration Menu section.
Thermostat Setting &
Thermostat Thermometer
Disagree
1. Voltage spike or static discharge.
Use the Reset Operation at top of previous page.
Blank Display and/or
Keypad Not Responding
1. The desired setpoint conflicts with the Change system mode to COOL. Raise the Cool
Heat Setpoint will
not Respond to the
Temperature Up Key
setpoint of the COOL mode.
setpoint. Return to HEAT mode and set desired
temperature.
1. The desired setpoint conflicts with the Change system mode to HEAT. Lower the Heat
Cool Setpoint will
setpoint of the HEAT mode.
setpoint. Return to COOL mode and set desired
temperature.
not Respond to the
Temperature Down Key
With the thermostat in any mode, press
at the same time to enter the configuration menu at
the point where the lockout code is to be entered.
and
Forgot Keypad
Lockout Code
Press
and
and SYSTEM button at the same
time to reset the lockout code, unlock the keypad.
Your thermostat is designed to determine the
optimum time to activate the second stage. Simply
raising the temperature in heating or lowering it in
cooling will not always force the thermostat to bring
the second stage on quickly. There is a time delay
from 0-30 minutes depending on the performance of
the first stage of the system.
Why won't my 2nd or
3rd stage come on?
HOMEOWNER HELP LINE: 1-800-284-2925
White-Rodgers is a division
of Emerson Electric Co.
The Emerson logo is a
trademark and service mark
of Emerson Electric Co.
St. Louis, MO
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