AIR CONDITIONER (SPLIT TYPE)
Installation Manual
Indoor Unit
Model name:
Under Ceiling Type
RAV-SP180CT-UL
RAV-SP240CT-UL
RAV-SP300CT-UL
RAV-SP360CT-UL
RAV-SP420CT-UL
Installation Manual
Air conditioner (Split type)
English
1
Manuel d’installation
Climatiseur (Type split)
Français
33
Installation Manual
Under Ceiling Type
1 ACCESSORY PARTS
„Accessory parts
Part name
Owner’s Manual
Installation Manual
Installation pattern
Q’ty
Shape
Usage
1
1
1
–
–
This manual
–
–
Drawing-out port of hanging bolt pipe
Thermal insulation pipe
Washer
2
4
For thermal insulation of pipe connecting section
3/8” (M10) × Ø1.0” (25 mm) For holding down unit
For connecting drain pipe
Hose band
2
1
1
Drain hose
For connecting drain pipe
Bushing Ø2.2” (Ø56)
For protection of edge at hole for remote control wires
Bushing Ø1.1” (Ø28)
Thermal insulator
1
For sealing the back side conduit hole
For thermal insulation of drain hose
(0.4” - thickness × 7.9” × 7.9” (10 - thickness × 200 × 200 mm))
1
1
2
Thermal insulator of top
plate
For upper pipe hole of indoor unit
(0.2” - thickness × 5.1” × 6.3” (6 - thickness × 130 × 160 mm))
Banding band
For prevention of open of drain hose thermal insulator
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Installation Manual
Under Ceiling Type
2 PRECAUTIONS FOR SAFETY
Installing, starting up, and servicing air--conditioning equipment can be hazardous due to system pressures,
electrical components, and equipment location (roofs, elevated structures, etc.).
Only trained, qualified installers and service mechanics should install, start--up, and service this equipment.
Untrained personnel can perform basic maintenance functions such as cleaning heat exchanger. All other
operations should be performed by trained service personnel.
When working on the equipment, observe precautions in the literature and on tags, stickers, and labels attached
to the equipment.
Follow all safety codes.Wear safety glasses and work gloves. Keep quenching cloth and fire extinguisher nearby
when brazing. Use care in handling, rigging, and setting bulky equipment.
Read these instructions thoroughly and follow all warnings or cautions included in literature and attached to the
unit. Consult local building codes and National Electrical Code (NEC) for special requirements. Recognize safety
information. This is the safety--alert symbol
. When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury.Understand these signal words: DANGER, WARNING, and
CAUTION. These words are used with the safety--alert symbol.
DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING
signifies hazards which could result in personal injury or death. CAUTION is used to identify unsafe practices which
may result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which
will result in enhanced installation, reliability, or operation.
WARNING
• Ask an authorized dealer or qualified installation professional to install (including moving)/maintain the air
conditioner.
Inappropriate installation may result in water leakage, electric shock or fire.
• Be sure to connect ground wire. (grounding work)
Incomplete grounding cause an electric shock.
Do not connect ground wires to gas pipes, water pipes, lightning rods or ground wires for telephone wires.
• Turn off the circuit breaker before attempting any electrical work.
Make sure all circuit breaker is off. Failure to do so may cause electric shock.
• Install the refrigerant pipe securely during the installation work before operating the air conditioner.
If the air conditioner is operated with the valve open and without the refrigerant pipe, the compressor sucks air and
the refrigeration cycle is overpressurized, which may cause a burst or injury.
• When moving the air conditioner for the installation into another place, be very careful not to enter any
gaseous matter other than the specified refrigerant into the refrigeration cycle.
If air or any other gas is mixed in the refrigerant, the gas pressure in the refrigeration cycle becomes abnormally high
and it resultingly causes pipe burst and injuries on persons.
• Perform installation work properly according to the Installation Manual.
Inappropriate installation may result in water leakage, electric shock or fire.
• When the air conditioner is installed in a small room, provide appropriate measures to ensure that the
concentration of refrigerant leakage occur in the room does not exceed the critical level.
• Install the air conditioner securely in a location where the base can sustain the weight adequately.
• Perform the specified installation work to guard against an earthquake.
If the air conditioner is not installed appropriately, accidents may occur due to the falling unit.
• If refrigerant gas has leaked during the installation work, ventilate the room immediately.
If the leaked refrigerant gas comes in contact with fire, noxious gas may generate.
• After the installation work, confirm that refrigerant gas does not leak.
If refrigerant gas leaks into the room and flows near a fire source, such as a cooking range, noxious gas might
generate.
• Electrical work must be performed by a qualified electrician in accordance with the Installation Manual. Make
sure the air conditioner uses an exclusive power supply.
An insufficient power supply capacity or inappropriate installation may cause fire.
• Use the specified wires for wiring connect the terminals securely fix.
To prevent external forces applied to the terminals from affecting the terminals.
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Installation Manual
Under Ceiling Type
• Conform to the regulations of the local electric company when wiring the power supply.
Inappropriate grounding may cause electric shock.
• For the refrigerant recovery work (collection of refrigerant from the pipe to the compressor), stop the
compressor before disconnecting the refrigerant pipe.
If the refrigerant pipe is disconnected while the compressor is working with the valve open, the compressor sucks air
and the refrigeration cycle is overpressurized, which may cause a burst or injury.
CAUTION
• THIS AIR CONDITIONER ADOPTS THE NEW HFC REFRIGERANT (R410A) WHICH DOES NOT DESTROY
OZONE LAYER.
• The characteristics of R410A refrigerant are ; easy to absorb water, oxidizing membrane or oil, and its pressure is
approx. 1.6 times higher than that of refrigerant R22. Accompanied with the new refrigerant, refrigerating oil has also
been changed. Therefore, during installation work, be sure that water, dust, former refrigerant, or refrigerating oil does
not enter the refrigerating cycle.
• To prevent charging an incorrect refrigerant and refrigerating oil, the sizes of connecting sections of charging port of
the main unit and installation tools are changed from those for the conventional refrigerant.
• Accordingly the exclusive tools are required for the new refrigerant (R410A).
• For connecting pipes, use new and clean piping designed for R410A, and please care so that water or dust does not
enter.
• Tighten the flare nut with a torque wrench in the specified manner.
Excessive tightening of the flare nut may cause a crack in the flare nut after a long period, which may result in
refrigerant leakage.
• Wear heavy gloves during the installation work to avoid injury.
• The installation fuse must be used for the power supply line of this conditioner.
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Installation Manual
Under Ceiling Type
3 SELECTION OF INSTALLATION PLACE
„Installation space
WARNING
Secure the specified space in the figure for
• Install the air conditioner at enough strong place
installation and servicing.
to withstand the weight of the unit.
If the strength is not enough, the unit may fall down
resulting in injury.
Unit: in (mm)
• Install the air conditioner at a height 8’ (2.4 m) or
more from the floor.
If you insert your hands or others directly into the unit
while the air conditioner operates, it is dangerous
because you may contact with revolving fan or active
electricity.
9.8” (250)
or more
9.8” (250)
or more
CAUTION
• Do not install the air conditioner in a location
subject to a risk of exposure to a combustible gas.
If a combustible gas leaks and stays around the unit,
a fire may occur.
Upon approval of the customer, install the air
conditioner in a place that satisfies the
following conditions.
• Place where the unit can be installed horizontally.
• Place where a sufficient servicing space can be
ensured for safety maintenance and check.
„Height of ceiling
Set the installable height of the ceiling within 13’1” (4
m), otherwise the air distribution will become poor.
If height of ceiling exceeds 11’6” (3.5 m), hot air
becomes difficult to reach the floor surface, and then
the change of setup of high ceiling is necessary.
For the change method of high ceiling, refer to the
application control, “In case of installation to high
ceiling” and “In case of incorporating filter sold
separately” in this Manual.
• Place where drained water will not cause any
problem.
Avoid installing in the following places.
• Place exposed to air with high salt content (seaside
area), or place exposed to large quantities of sulfide
gas (hot spring).
List of installable ceiling height
(Should the unit be used in these places, special
protective measures are needed.)
• Place exposed to oil, vapor, oil smoke or corrosive
gas.
• Place where organic solvent is used nearby.
• Place close to a machine generating high frequency.
Setup data
Standard
0000
0001
11’6” (3.5 m) or less
(Factory default)
more than 11’6” (3.5 m)
up to 13’1” (4.0 m)
High ceiling 1
• Place where the discharged air blows directly into
the window of the neighbor house. (Outdoor unit)
• Place where noise of the outdoor unit is easily
transmitted.
According to the conditions of installation, setup time of
turning-on of filter sign (notification of filter cleaning) of
the remote control can be changed.
When it is difficult to warm up the room due to
installation place or structure of the room, the detection
temperature of heating can be raised.
For change the setup time, refer to the application
control, “Change of filter sign turning-on time” and
“How to increase the heating effect” in this Manual.
(When install the outdoor unit on the boundary with
the neighbor, pay due attention to the level of noise.)
• Place with poor ventilation. (Before air ducting work,
check whether value of fan speed, static pressure
and duct resistance are correct.)
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Installation Manual
Under Ceiling Type
2
Removing wire guard
Remove the screws (2 pcs.) which are fixing the
wire guard.
Remove the clamp fixing screws and remove the
wire guard.
„Wireless remote control
Decide the position which remote control is operated
and the installation place.
And then refer to the Installation Manual of the wireless
remote controller kit sold separately.
Clamps
(The signal of the wireless type remote control can be
received within approx. 23’ (7 m). This distance is a
criterion and varies a little according to capacity of the
battery, etc.)
• To prevent malfunction, select a place where is not
affected by a fluorescent lamp or direct sunlight.
• Two or more (up to 6 units) wireless-type indoor units
can be set in a room.
Screw
CAUTION
Attach back the wire guard once indoor unit is installed.
Remove the 2 screws fixing the wire guard and hung the
wire guard with the clamps during a service.
„Before installation
1
Removal of suction grille
Slide the suction grille fixing knobs (2 positions)
toward the arrow direction, and then open the
suction grille.
Under the condition of suction grille opened, push
the hook section of hinges (2 positions) at the rear
side, and then pull out the suction grille.
Wire guard
Suction grille
fixing knob
Suction grille
Hinge
Pull out suction grille
while pushing hook.
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Installation Manual
Under Ceiling Type
3
Removal of side panel
After removing the side panel fixing screws (1
each at right and left), slide the side panel forward
and then remove it.
Protector
Side panel
Level louver
Slide forward.
4
5
Removal of protective vinyl
Peel out the protective vinyl on the level louver.
Removal of protector
Remove the protector (1 pcs.) of the fan.
(RAV-SP240CT only)
„External view
REQUIREMENT
Strictly comply with the following rules to prevent
damage of the indoor units and human injury.
• Do not put a heavy article on the indoor unit. (Even
units are packaged)
• Carry in the indoor unit as it is packaged if possible.
If carrying in the indoor unit unpacked by necessity,
be sure to use buffering cloth, etc. to not damage
the unit.
• Do not apply force to the other parts (refrigerant
pipe, drain pan, foamed parts, or resin parts, etc.).
• Carry the package by two or more persons, and do
not bundle it with plastic band at positions other
than specified.
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Installation Manual
Unit: in (mm)
Under Ceiling Type
1.5” (39)
2.0” (52)
6.6” (167)
8.5” (216)
Upper pipe draw-out port (knockout)
Pipe draw-out port
(knockout)
8.3” (210)
Hole for remote control wires (knockout)
4.3” (110)
3.0” (76)
Conduit hole
(Hole for power supply cable. knockout)
Drain port VP20
(Inner dia. Ø1.0” (26), hose
attached)
4.1” (105)
3.3” (84)
Refrigerant pipe
(Liquid side ØC)
Left drain size
Refrigerant pipe (Gas side ØD)
Drain pipe
connecting
port
B (Hanging position)
3.0” (75)
3.8” (97)
5.7” (146)
Hole for remote control wires
13.7” (347)
12.2” (311)
Conduit hole
(knockout)
5.3” (135)
10.3” (262)
3.3” (84)
Hanging bolt
Pipe hole on wall
(Ø3.9” (100) hole)
Hole for power supply cable
Left drain pipe
draw-out port
(knockout)
Ceiling surface
Unit
Outside air take-in port (Duct sold separately)
Knockout hole Ø3.6” (92))
Wireless sensor
mounting section
A
Unit: in (mm)
Model name
180CT
A
B
C
D
35.8”
(910)
33.7”
(855)
Ø1/4”
(6.4)
Ø1/2”
(12.7)
46.5”
(1180)
44.3”
(1125)
240CT
Ø3/8”
(9.5)
Ø5/8”
(15.9)
300CT, 360CT
to 420CT
62.8”
(1595)
60.6”
(1540)
Considering pipe/wire connecting work inside the ceiling after the indoor unit has been hanged, select an
installation place and determine piping direction.
• If the ceiling has already been set before hanging the main unit, prepare refrigerant pipe, drain pipe, indoor
connecting wire, remote control cord, etc. up to the place where pipe and wire can be connected.
• Check the size of the indoor unit, and match the indoor unit size using the attached installation pattern.
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Installation Manual
Under Ceiling Type
Using attached installation pattern
„Pipe knockout hole
• Piping from rear side
Ceiling surface
Wall face
* Cut off the groove section with a plastic cutter, etc.
Rear cover
Installation pattern
100
Opened when
Using the pattern, positioning of the hanging bolt and
pipe hole can be performed.
* As an error to some degree may generate on the
pattern size due to temperature and humidity, be
sure to confirm the size.
refrigerant pipe is
Grooves
taken out from the
rear side
Opened when only drain pipe is
taken out from the rear side
„Installation of hanging bolts
Use 3/8” (M10) hanging bolts (4 pcs, to be local
procure).
• Piping from right side
* Cut off the groove section with a metal saw or
plastic cutter, etc.
Matching to the existing structure, set pitch according
to size in the unit external view as shown below.
Groove
New concrete slab
Install the bolts with insert brackets or anchor bolts.
Rubber
Side panel (Right side)
Anchor bolt
(Slide type
• Piping from left side
Taking pipe from left side is applied only to the
drain pipe.
(Blade type
bracket)
(Pipe hanging
anchor bolt)
bracket)
The refrigerant pipe cannot be taken out from the
left side.
* Cut off the groove section with a metal saw or
plastic cutter, etc.
Steel flame structure
Use existing angles or install new support angles.
Hanging bolt
Hanging bolt Support angle
Existing concrete slab
Use a hole-in anchors, hole-in plugs, or a hole-in bolts.
Side panel (Left side)
Groove
• Piping from upper side
Taking pipe from upper side is applied only to
the refrigerant pipe.
When taking out the drain pipe from the upper
side, use a drain up kit sold separately.
Open the upper pipe draw-out port (Knockout hole)
shown in the external view.
„Draw-out direction of pipe/
wire
(Knockout hole of thin plate)
After piping, cut off the attached thermal insulator of
the top plate to pipe shape, and then seal the
knockout hole.
• Decide installation place of the unit and draw-out
direction of pipe and wire.
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Installation Manual
Under Ceiling Type
(2) Hang the unit to the hanging bolt as shown the
figure below.
„Installation of indoor unit
• Preparation before holding down main unit
* Confirm the presence of the ceiling material
beforehand because the fixing method of hanging
metal when the ceiling material is set differs from
that when the ceiling material is not set.
▼ There is ceiling material
Hanging bolt
(Procured locally)
(3) As shown in the figure below, fix the ceiling material
securely with the double nuts.
Ceiling surface
Indoor
unit
Washer (Accessory)
Double nut
(Procured locally)
Hanging metal
Hanging bolt
(Procured locally)
Nut
REQUIREMENT
(Procured locally)
Ceiling surface
• The ceiling surface may not be horizontal. Be
sure to confirm that width and depth directions
are level.
Indoor
unit
Washer (Accessory)
Double nut
(Procured locally)
Hanging metal
„
Installation of remote control
(Sold separately)
* Tighten the hanging metal with upper/lower nuts
as shown in the figure.
For installation of the wired remote control, follow the
Installation Manual attached with the remote control.
• Pull out the remote control cord together with the
refrigerant pipe or drain pipe.
Be sure to pass the remote control cord through
upper side of the refrigerant pipe and drain pipe.
• Do not leave the remote control at a place exposed
to the direct sunlight and near a stove.
• Operate the remote control, confirm that the indoor
unit receives a signal surely, and then install it.
(Wireless type)
▼ There is no ceiling material
Hanging bolt
(Procured locally)
Washer
(Procured locally)
Indoor
unit
Washer (Accessory)
Double nut
(Procured locally)
• Holding down of main unit
(1) Attach washer and nuts to the hanging bolt.
• Keep 3’3” (1 m) or more from the devices such as
television, stereo, etc.
(Disturbance of image or noise may generate.)
(Wireless type)
Ceiling surface
Double nut
(Procured locally)
Washer
(Accessory)
Hanging bolt
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Installation Manual
Under Ceiling Type
4 REFRIGERANT PIPING AND EVACUATING
„Refrigerant Piping
„Permissible Piping Length
and Height Difference
They vary according to the outdoor unit.
For details, refer to the Installation Manual attached to
the outdoor unit.
• The connecting sections of the refrigerant pipes are
provided at the positions in the figure below.
* When using the drain
Upper side
Rear side
pump kit sold separately,
the pipe can be drawn out
only from the upper side.
Flaring
Right
• Cut the pipe with a pipe cutter.
Remove burrs completely.
Remaining burrs may cause gas leakage.
• Insert a flare nut into the pipe, and flare the pipe.
As the flaring sizes of R410A differ from those of
refrigerant R22, the flare tools newly manufactured
for R410A are recommended.
1. Use copper pipe with 0.03” (0.8 mm) or more
thickness.
However, the conventional
tools can be used by adjusting
projection margin of the
copper pipe.
B
(In case pipe size is Ø5/8” (15.9 mm), with 0.04” (1.0
mm) or more.)
2. Flare nut and flare works are also different from
those of the conventional refrigerant.
Take out the flare nut attached to the main unit of the
air conditioner, and use it.
▼ Projection margin in
flaring: B (Unit: in (mm))
Rigid (Clutch type)
REQUIREMENT
Outer dia. of
R410A tool used
copper pipe
Conventional
tool used
When the refrigerant pipe is long, provide support
brackets at intervals of 8’2” - 9’10” (2.5 - 3 m) to clamp
the refrigerant pipe. Otherwise, abnormal sound may
be generated.
1/4” - 5/8”
0 - 0.02”
(0 - 0.5)
0.04” - 0.06”
(1.0 - 1.5)
(6.4 - 15.9)
Imperial
Outer dia. of copper pipe
(Wing nut type)
0.06” - 0.08” (1.5 - 2.0)
0.08” - 0.1” (2.0 - 2.5)
CAUTION
1/4” (6.4) or 3/8” (9.5)
IMPORTANT 4 POINTS FOR PIPING WORK
1. Remove dust and moisture from the inside of the
connecting pipes.
2. Tight connection (between pipes and unit)
3. Evacuate the air in the connecting pipes using
VACUUM PUMP.
1/2” (12.7) or 5/8” (15.9)
▼ Flaring dia. meter size: A (Unit: in (mm))
+0
Outer dia. of copper pipe
1/4” (6.4)
A
-0,02" (–0.4)
0.36” (9.1)
0.52” (13.2)
0.65” (16.6)
0.78” (19.7)
4. Check the gas leakage. (Connected points)
3/8” (9.5)
1/2” (12.7)
5/8” (15.9)
„Pipe size
* In case of flaring for R410A with the
conventional flare tool, pull it out approx.
0.02” (0.5 mm) more than that for R22 to
adjust to the specified flare size.
The copper pipe gauge is useful for
adjusting projection margin size.
A
SP240,SP300,
Model
name
SP180
type
RAV-
SP360, SP420
type
1/2"
(12.7 mm)
5/8"
(15.9 mm)
Gas side
Pipe size
1/4"
(6.4 mm)
3/8"
(9.5 mm)
Liquid side
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Installation Manual
Under Ceiling Type
Tightening connection
„Evacuation
Using a vacuum pump, perform vacuuming from the
charge port of valve of the outdoor unit.
For details, follow to the Installation Manual attached to
the outdoor unit.
CAUTION
• Do not apply excessive torque. Otherwise, the nut
may crack depending on the conditions.
• Never use the refrigerant sealed in the outdoor unit
for air purge.
(Unit: ft•lbs (N•m))
Outer dia. of copper
Tightening torque
pipe
REQUIREMENT
For the tools such as charge hose, etc., use those
manufactured exclusively for R410A.
1/4” (6.4 mm)
3/8” (9.5 mm)
1/2” (12.7 mm)
5/8” (15.9 mm)
10 -13 (14 - 18)
24 - 31 (33 - 42)
37 - 46 (50 - 62)
46 - 57 (63 - 77)
Refrigerant amount to be added
For addition of the refrigerant, add refrigerant “R410A”
referring to the attached Installation Manual of outdoor
unit.
Be sure to use a scale to charge the refrigerant of
specified amount.
▼
Tightening torque of flare pipe connections
Pressure of R410A is higher than that of R22.
(Approx. 1.6 times)
Therefore, using a torque
wrench, tighten the flare pipe
connecting sections which
connect the indoor and
Flare at
indoor
unit side
REQUIREMENT
• Charging an excessive or too little amount of
refrigerant causes a trouble of the compressor.
Be sure to charge the refrigerant of specified
amount.
• A personnel who charged the refrigerant should
write down the pipe length and the added
refrigerant amount in the nameplate attached to the
service panel of the outdoor unit. It is necessary to
troubleshooter the compressor and refrigeration
cycle malfunction.
outdoor units of the specified
tightening torque.
Incorrect connections may
cause not only a gas leak, but
also a trouble of the
refrigeration cycle.
Align the centres of the connecting pipes and tighten
the flare nut as far as possible with your fingers. Then
tighten the nut with a spanner and torque wrench as
shown in the figure.
Flare at
outdoor
unit side
Half union
Flare nut
Open the valve fully
Open the valve of the outdoor unit fully.
For details, refer to the Installation Manual attached to
the outdoor unit.
Internally
Externally
threaded side
threaded side
Use a wrench to secure.
Use a torque wrench to tighten.
REQUIREMENT
Gas leak check
Tightening with an excessive torque may crack the nut
depending on installation conditions.
Tighten the nut within the specified tightening torque.
Check with a leak detector or soap water whether gas
leaks or not, from the pipe connecting section or cap of
the valve.
REQUIREMENT
Piping with outdoor unit
Use a leak detector manufactured exclusively for HFC
refrigerant (R410A, R134a, etc.).
• Shape of valve differs according to the outdoor unit.
For details of installation, refer to the Installation
Manual of the outdoor unit.
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Installation Manual
Under Ceiling Type
Thermal insulation process
Apply thermal insulation for the pipes separately at
liquid side and gas side.
For the thermal insulation to the pipes at gas side, be
sure to use the material with heat-resisting
temperature 248 °F (120 °C) or higher.
Using the attached thermal insulation material, apply
the thermal insulation to the pipe connecting section of
the indoor unit securely without gap.
REQUIREMENT
• Apply the thermal insulation to the pipe connecting
section of the indoor unit securely up to the root
without exposure of the pipe. (The pipe exposed to
the outside causes water leak.)
• Wrap heat insulator with its slits facing up (ceiling
side).
Wrap the pipe with the attached heat insulator
without any gap between the indoor unit.
Indoor unit
The seam must be faced upward
(ceiling side).
Heat insulator
of the pipe
Flare nut
Heat insulation
pipe
(Accessory)
Union
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Installation Manual
Under Ceiling Type
5 DRAIN PIPING WORK
• Set the collective piping as shown in the below
figure.
CAUTION
As long as possible
(3.9” (100 mm))
• Following the Installation Manual, perform the
drain piping work so that water is properly
drained, and apply a heat insulation so as not to
cause a dew dropping.
VP20
VP20
VP20
Extended
ventilating
pipe
Inappropriate piping work may result in water
leakage in the room and wet of furniture.
VP30 or more
Downward slope
1/100 or more
<Collective piping>
„Piping/Heat insulating
material
Require the following materials for piping and heat
insulating at site.
• Be sure not to apply force to the connecting part of
the drain pipe.
• The hard vinyl-chloride pipe cannot be directly
connected to the drain pipe connecting port of the
indoor unit.
For connection with the drain pipe connecting port,
be sure to use/fix the attached flexible hose with the
hose band, otherwise a damage or water leak is
caused on the drain pipe connecting port.
Hard vinyl chloride pipe VP20
Piping
(Outer dia.: Ø1.0” (26 mm))
Foam polyethylene:
Heat insulator
Thickness 0.4” (10 mm) or more
Drain pipe connecting
Attached flexible hose
port (Hard socket)
REQUIREMENT
• Be sure to perform heat insulation of the drain pipes
of the indoor unit.
Attached hose band
Attached hose band
• Never forget to perform heat insulation of the connecting
part with the indoor unit.
An incomplete heat insulation causes dew dropping.
Drain pan
• Set the drain pipe with downward slope (1/100 or
more), and do not make swelling or trap on the
piping. It may cause an abnormal sound.
Soft socket
Soft socket
• For length of the traversing drain pipe, restrict 65’7”
(20 m) or less.
Adhesive agent
VP20 vinyl chloride pipe
(procured locally)
prohibited
In case of a long pipe, provide support brackets with
interval of 4’11” - 6’7” (1.5 - 2 m) in order to prevent
waving.
Adhesive inhibited:
Use the attached flexible hose and hose band for
connecting the drain hose to the clear drain socket.
If applying the adhesive, socket will be damaged and
cause water leakage.
4’11” - 6’7” (1.5 - 2 m)
Support
bracket
1/100 or more
downward
Thermal insulator
„Drain up
NO
Arched shape
When not securing down slope on the drain pipe, use
a Drain pump kit sold separately.
GOOD
Also refer to the “Drain pump kit installation manual”.
The drain pipe can be raised 23.6” (600 mm) from the
top face of the main unit.
Trap
EN
* When using Drain pump kit, both drain pipe and
refrigerant pipe can be taken only from upper side.
* VP25 PVC pipe is needed when a drain pump is
used.
– 14 –
14-EN
Installation Manual
Under Ceiling Type
„Connection of drain hose
„Connection of drain pipe
• Insert the attached drain hose into the drain pipe
connecting port on the drain pan up to the end.
• Fit the attached hose band to the end of the pipe
connecting port, and then tighten it securely.
• Connect the hard vinyl chloride pipe (procured
locally) to the mounted drain hose which was
attached.
• Piping from left side
• In case of taking pipe from the left side, exchange
the plug from left to right. Push in the plug of which
end is not sharp up to the end.
REQUIREMENT
• Be sure to fix the drain hose with the attached hose
band, and set the tightening position upward.
Drain pan
• As the draining is the natural water draining,
arrange the pipe outside of the unit on the down
slope.
• If piping is performed as shown in the figure, drain
cannot be discharged.
Plug
NO GOOD
Refrigerant pipe
Drain pipe
Drain pipe
Fit the attached hose band to the end of the hose, lay
down the knob, and then tighten hose band.
Drain pan
Attached drain hose
Confirm that soft hose is pushed
in up to the end of the drain pan.
„Thermal insulating process
• Using the attached drain hose thermal insulator, lap
the connecting section and the drain hose without
clearance, and then tighten with two handing band
so that thermal insulator does not open.
• Covering the attached drain hose thermal insulator,
lap the thermal insulator (procured locally) to the
drain pipe without clearance.
Lap covering connecting section
Thermal insulator
between drain pan and drain hose.
(procured locally)
Drain hose
Drain
pan
Lap the attached
thermalinsulation
so that the one
end is put on the
other end at the
upper side.
Hose band Banding band Hose band
Attached thermal insulator
* Tighten the banding band so that
attached thermal insulator is not
pushed excessively.
15-EN
– 15 –
Installation Manual
Under Ceiling Type
6 ELECTRICAL CONNECTION
REQUIREMENT
WARNING
• For power supply wiring, strictly conform to the
Local Regulation in each country.
• For wiring of power supply of the outdoor units,
follow the Installation Manual of each outdoor unit.
1. Using the specified wires, ensure to connect the
wires, and fix wires securely so that the external
tension to the wires do not affect the connecting
part of the terminals.
Incomplete connection or fixation may cause a fire,
etc.
• Never connect 208/230 V power to the terminal
blocks (A, B etc.) for control wiring.
(Otherwise, the system will fail.)
• Perform the electric wiring so that it does not come
to contact with the high-temperature part of the
pipe.
The coating may melt resulting in an accident.
• Run the refrigerant piping line and control wiring line
in the same line.
• Do not turn on the circuit breaker of the indoor unit
until vacuuming of the refrigerant pipes completes.
2. Be sure to connect ground wire. (grounding work)
Incomplete grounding cause an electric shock.
Do not connect ground wires to gas pipes, water
pipes, lightning rods or ground wires for telephone
wires.
3. Appliance shall be installed in accordance with
national wiring regulations.
Capacity shortage of circuit breaker or incomplete
installation may cause an electric shock or a fire.
CAUTION
Remote control wiring
• Consult local building codes, NEC (National Electrical
Code) or CEC (Canadian Electrical Code) for special
requirements.
• This indoor unit has no power cord.
• If incorrect/incomplete wiring is carried out, it will
cause an electrical fire or smoke.
• Be sure to install circuit breaker is not tripped by shock
waves.
If circuit breaker is not installed, an electric shock may
be caused.
• Be sure to use the cord clamps attached to the
product.
• Do not damage or scratch the conductive core and
inner insulator of power and system interconnection
wires when peeling them.
• Use the power cord and system interconnection wire
of specified thickness, type, and protective devices
required.
• For single system, use 2 x AWG20 non polarity wire
is used for the remote control wiring.
Wiring
1. Connect the connecting wire to the terminal as
identified with their respective numbers on the
terminal block of indoor and outdoor unit.
(4 x AWG12)
2. Insulate the unsheathed redundant cords
(conductors) with electrical insulation tape.
Process them so that they do not touch any electrical
or metal parts.
3. For inter-unit wiring, do not use a wire jointed to
another on the way.
Wire Quantity x size
1
Indoor unit - Outdoor unit *
Ground
3 x AWG12 (polar)
1 x AWG12 or thicker
2 x AWG20 (non-polar)
Remote control
1
* :Length of the system interconnection wires.
SP300AT2 -
SP420AT2
RAV-
SP180AT2 SP240AT2
Wire
length
164’1” (50
m) or less
229’8” (70
m) or less
246’1” (75 m) or
less
EN
– 16 –
16-EN
Installation Manual
Under Ceiling Type
CAUTION
Use the same size wire for the field power supply wire
and system interconnection wires when the outdoor unit
is RAV-SP180AT2.
NOTE
• Use copper supply wires.
• Use UL wires rated 600 V for the system
interconnection wires.
• Use UL wires rated 300 V for the remote control
wires.
17-EN
– 17 –
Installation Manual
Under Ceiling Type
„Wire connection
REQUIREMENT
• Be sure to connect the wires matching the terminal numbers. Incorrect connection causes a trouble.
• The low-voltage circuit is provided for the remote control. (Do not connect the high-voltage circuit)
• Loosen the cover mounting screws (2 positions) of the electric parts box, and then remove the cover.
• Attach the conduit pipe to the conduit hole with a lock nut.
• Slit the film of bushing attached to the hole for remote control wire, and then pass through wires.
• Connect the system interconnection wires and the remote control wire to the terminal block of the electric parts
box. Secure the ground wire with the ground screw.
• Tighten screws of the terminal block securely, and fix the wires with code clamp attached to the electric parts
box. (Do not apply tension to the connecting section of the terminal block.)
• Mount the cover of the electric parts box so that it does not pinch the wires.
Two screws
Electric parts box
Terminal block
P.C. board
Conduit hole
Terminal block for
wired remote
control
Terminal block for system
interconnection
Ground screw
System interconnection
wires and ground wire
A
B
L1
L2
S
Cord clamp
Remote control wires
Wire partition plate
Pass the remote control wire through the
hole for remote control wire and behind
this wire partition plate.
Hole for Remote control wires
EN
18-EN
– 18 –
Installation Manual
Under Ceiling Type
CAUTION
Fix the system interconnection wires and the remote control wires separately with the cord clamps as shown below.
Connected at backside
Cord clamp
Conduit pipe
Cord clamp
Conduit hole for
system
interconnection wires
Hole for
remote control wires
Connected at upside
Conduit hole (knockout)
for system
interconnection wires
Hole for
remote control wires
(knockout)
Attach the supplied
bushing to cover the
hole edge.
Cord Clamp
Cord Clamp
Cord clamp
Attach the supplied
bushing to seal the
back side conduit hole.
19-EN
– 19 –
Installation Manual
Under Ceiling Type
„System interconnection
„Remote Control Wiring
Wires and Ground Wire
1. Strip wire ends.
• Strip off approx. 0.4” (9 mm) the wire to be
connected.
• Non polarity, 2 x AWG20 wire is used for wiring of the
remote control.
System interconnection wire : 0.4” (10 mm).
Ground wire : 0.8” (20 mm)
Terminal block for
2. Match wire colours with terminal numbers on indoor
and outdoor units’ terminal blocks and firmly screw
wires to the corresponding terminals.
3. Secure the ground wire with the ground screw.
4. Fix the wire with cord clamp.
remote control wiring
of indoor unit
Terminal block
Remote
A
B
A
control
B
unit
Remote control wire
(Procured locally)
Unit: in (mm)
0.8” (20)
„Wiring Diagram
L1
L2
S
0.4” (10)
▼ Single system
Low voltage
Indoor unit
208/230-1-60
A
B
L
1
L
2
S
High voltage
Connecting wire
Ground wire
L
1
L
2
S
Remote
control
Outdoor
unit
CAUTION
• Firmly tighten the screws of the terminal block.
Keep the wire length as shown in figure below when it
is connected to the terminal block.
System
interconnection wire
EN
– 20 –
20-EN
Installation Manual
Under Ceiling Type
7 APPLICABLE CONTROLS
„Changing applicable control
REQUIREMENT
setting
• When you use this air conditioner for the first time,
it takes approx. 5 minutes until the remote control
becomes available after power-on. This is normal.
<When power is turned on for the first time after
installation>
Basic procedure for changing settings
Change the settings while the air conditioner is not
working.
(Be sure to stop the air conditioner before making
settings.)
It takes approx. 5 minutes until the remote control
becomes available.
Approx. 5 minutes
“SETTING”
flashes
“SETTING”
goes out
Remote
control is
available
Power
on
3
4
<When power is turned on for the second (or
later) time>
It takes approx. 1 minute until the remote control
becomes available.
6
5
2
1
Procedure 1
When pushing
for 4 seconds or more, after a while, the display part
flashes as shown in the figure.
Approx. 1 minutes
,
, and
buttons simultaneously
“SETTING”
flashes
“SETTING”
goes out
Remote
control is
available
Power
on
Check that the displayed CODE No. is [10].
• If the CODE No. indicates other than [10], push
button to erase the display, and then retry the
operation from the first step.
• Normal settings were made as factory default.
Change the indoor unit settings as required.
• Use the wired remote control to change the
settings.
(For some time after
button has been pushed, the
* The settings cannot be changed using the
wireless remote control, sub remote control,
or remote-controlless system (for central
remote control only). Therefore, install the
wired remote control to change the settings.
operation of the remote control cannot be accepted.)
(In a group control, the firstly displayed indoor UNIT
No. becomes the master unit.)
(* Display content varies with
the indoor unit model.)
Procedure 2
Every pushing
button, the indoor UNIT No. in
the group control is displayed successively.
Select an indoor unit of which setup to be changed.
In this time, the position of the indoor unit of which
setup to be changed can be confirmed because the fan
and the louver of the selected indoor unit work.
Procedure 3
Using temp. setup
/
buttons, specify CODE
No. [ ].
Procedure 4
Using timer time
].
/
buttons, select SET DATA [
21-EN
– 21 –
Installation Manual
Under Ceiling Type
Procedure 5
„Using wireless remote control
Push
button. In this time, if the display changes
Change the high ceiling setting with the DIP switch on
the P.C. board of the signal receiving part.
Refer to the installation manual of the wireless remote
controller kit for the details.
High ceiling setting can be changed by arranging the
jumper block on the indoor unit micro computer P.C.
board as shown in the table below as well.
from flashing to lighting, the setup completes.
• To change the setup of an indoor unit other than the
selected one, start operation from Procedure 2.
• To change the setup of another setup in the selected
indoor unit, start operation from Procedure 3.
Pushing
button clears the set up contents which
have been already set. In this case, retry from
Procedure 2.
* However, once the setting is changed, it is
necessary to reset the setting back to 0000 that
placing the jumper block back to the factory default
position and rewriting the setting data back to 0000
with wired remote control (sold separately). (The
setting can be changed to 0001, 0003 and 0006
without resetting.)
Procedure 6
When settings have been completed, push
to determine the settings.
button
When
button is pushed, “SETTING” flashes and
then the display content disappears and the air
conditioner enters the normal stop mode.
(While “SETTING” is flashing, no operation of the
remote control is accepted.)
• Select by exchange of jumper block on indoor
microcomputer P.C. board.
jumper block
position
SET DATA
Note
Short
Open
„Installation to high ceiling
When the height of the ceiling to be installed exceeds
3.5 m (11’6”), adjustment of fan speed is necessary.
Set up the high ceiling.
• Set according to the basic operation procedure
(1 → 2 → 3 → 4 → 5 → 6).
Standard filter
0000
0001
(Factory default)
High static pressure 1
• Item code in Procedure specifies [5d].
• Select [SET DATA] in Procedure from “List of
installable ceiling height” in this Manual.
• For the item code in Procedure 3, specify [5d].
• Jumper block position
(CN112, CN111, CN110 from the left)
• For the SET DATA in Procedure 4, select the setup
data of static pressure to be set up from the table on
the right.
(Exchange by wired remote control)
SET DATA
Standard
0000
0001
11’6” (3.5 m) or less
(Factory default)
more than 11’6” (3.5 m)
up to 13’1” (4.0 m)
High static pressure 1
EN
– 22 –
22-EN
Installation Manual
Under Ceiling Type
„Filter sign setting
„Group control
According to the installation condition, the lighting time
of the filter sign (Notification of filter cleaning) can be
changed.
Follow to the basic operation procedure
(1 → 2 → 3 → 4 → 5 → 6).
Group control for system of multiple units
One remote control can control maximum 8 indoor
units as a group.
• For the CODE No. in Procedure 3, specify [01].
▼ Group control in single system
• For the [SET DATA] in Procedure 4, select the setup
data of filter sign lighting time from the following
table.
Outdoor
unit
Outdoor
unit
Outdoor
unit
Outdoor
unit
Outdoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Setup data
0000
Filter sign lighting time
None
150H
(Max. 8 units)
0001
Remote
control
0002
2500H (Factory default)
5000H
Finish of address setup by
power-ON
0003
• For wiring procedure and wiring method of the
individual line (Identical refrigerant line) system,
follow to “Electric work”.
0004
10000H
• Wiring between lines is performed in the following
procedure.
Connect the terminal block (A/B) of the indoor unit
connected with a remote control to the terminal
blocks (A/B) of the indoor units of other indoor units
by wiring the inter-unit wire of the remote control.
• When the power supply has been turned on, the
automatic address setup starts and “ ” display
which indicates that address is being set up flashes
on the display part. During setup of automatic
address, the remote control operation is not
accepted.
„To secure better effect of
heating
When it is difficult to obtain satisfactory heating due to
installation place of the indoor unit or structure of the
room, the detection temperature of heating can be
raised. Also use a circulator, etc. to circulate heat air
near the ceiling.
Follow to the basic operation procedure
(1 → 2 → 3 → 4 → 5 → 6).
• For the CODE No. in Procedure 3, specify [06].
• For the SET DATA in Procedure 4, select the setup
data of shift value of detection temperature to be set
up from the table below.
Required time up to the finish of automatic
addressing is approx. 5 minutes.
Setup data
0000
Detection temp shift value
No shift
NOTE
In some cases, it is necessary to change the address
manually after setup of the automatic address
according to the system configuration of the group
control.
0001
+1.8 °F (+1 °C)
+3.6 °F (+2 °C)
(Factory default)
0002
0003
0004
0005
0006
+5.4 °F (+3 °C)
+7.2 °F (+4 °C)
+9.0 °F (+5 °C)
+10.8 °F (+6 °C)
Procedure example 1
Manual address setup procedure
While the operation stops, change the setup.
(Be sure to stop the operation of the unit.)
23-EN
– 23 –
Installation Manual
Under Ceiling Type
Indoor UNIT No. before setup change is displayed.
7
3
4
5
-2,
-2,
-2
4 -1,
3
5 --11,,
7
3
4 --33,,
5
-3,
1
2,6
Procedure 4
1. Using temp. setup
No. [13].
(CODE No. [13]: Indoor address)
2. Using timer time buttons, change the indoor
address from [3] to [2].
3. Push button.
/
buttons, specify CODE
Procedure 1
Push simultaneously
seconds or more. After a while, the display part flashes
as shown below. Check the displayed CODE No. is
[10].
• When the CODE No. is other than [10], push
button to erase the display and repeat procedure
from the first step.
+
+
buttons for 4
/
In this time, the setup finishes when the display
changes from flashing to lighting.
Indoor UNIT No. before setup change is displayed.
(After pushing
button, operation of the remote
control is not accepted for approx. 1 minute.)
(For a group control, No. of the firstly displayed
indoor unit becomes the header unit.)
(* Display changes according to
the model No. of indoor unit.)
Procedure 5
1. Using temp. setup
Procedure 2
/
buttons, specify CODE
Every pushing
button, the indoor UNIT No. in
No. [14].
the group control is displayed in order. Select the
indoor unit of which setup is changed.
In this time, the position of the indoor unit of which
setup is changed can be confirmed because fan and
louver of the selected indoor unit operate.
(CODE No. [14]: Group address)
2. Using timer time buttons, change the setup
data from [0001] to [0002].
/
(Setup data [Header unit: 0001] [Follower unit:
0002])
3. Push
button.
Procedure 3
1. Using temp. setup
In this time, the setup finishes when the display
changes from flashing to lighting.
/
buttons, specify CODE
No. [12].
Indoor UNIT No. before setup change is displayed.
(CODE No. [12]: Line address)
2. Using timer time buttons, change the line
address from [3] to [2].
3. Push button.
/
In this time, the setup finishes when the display
changes from flashing to lighting.
EN
– 24 –
24-EN
Installation Manual
Under Ceiling Type
Procedure 6
If there is other indoor unit to be changed, repeat
procedure 2 to 5 to change the setup.
When the above setup has finished, push
to
select the indoor UNIT No. before change of setup,
specify CODE No. [12], [13], [14] in order with temp.
setup
/
buttons, and then check the changed
contents.
1
2
Address change check Before change:
[3-3-1] → After change: [2-2-2]
1,3
Procedure 1
Push simultaneously
or more.
After a while, the display part flashes and the display
appears as shown below.
Pushing
was changed.
(In this case, procedure from 2 is repeated.)
button clears the contents of which setup
+
buttons for 4 seconds
Indoor UNIT No. before setup change is displayed.
In this time, the position can be checked because fan
and louver of the indoor unit operate.
• For the group control, the indoor UNIT No. is
displayed as [
] and fans and louvers of all the
indoor units in the group control operate.
Check the displayed CODE No. is [01].
• When the CODE No. is other than [01], push
button to erase the display and repeat procedure
from the first step.
(After pushing
button, operation of the remote
control is not accepted for approx. 1 minute.)
Procedure 7
After check of the changed contents, push
button.
(* Display changes according to
the model No. of indoor unit.)
(Setup is determined.) When pushing
button, the
display disappears and the status becomes the usual
stop status. (When pushing
from the remote control is not accepted for approx.
1 minute.)
* If the operation from the remote control is not
accepted even 1 minute or more passed after
button the operation
Procedure 2
In the group control, every pushing
indoor UNIT No. in the group control is displayed in
order.
In this time, the position of the indoor unit can be
confirmed because only fan of the selected indoor unit
operate.
button, the
pushing
button, it is considered that the address
setup is incorrect.
In this case, the automatic address must be again
set up.
Therefore repeat procedure of the setup change
from the Procedure 1.
(For a group control, No. of the firstly displayed indoor
unit becomes the header unit.)
Procedure 3
After confirmation, push
button to return the mode
to the usual mode.
When pushing
the status becomes the usual stop status.
(When pushing button the operation from the
remote control is not accepted for approx. 1 minute.)
button, the display disappears and
To recognize the position of the
corresponding indoor unit though the
indoor UNIT No. is known
Check the position during operation stop.
(Be sure to stop operation of the set.)
25-EN
– 25 –
Installation Manual
Under Ceiling Type
„Remote control switch
Outdoor unit data
Data name
CODE No.
60
monitoring function
Outdoor unit heat exchanger temperature
(TE)
This function is available to call the service monitor
mode from the remote control during a test run to
acquire temperatures of sensors of the remote control,
indoor unit, and outdoor unit.
61
62
63
64
65
6A
Outside air temperature (TO)
Compressor discharge air temperature (TD)
Compressor intake air temperature (TS)
—
1. Push
and
buttons simultaneously for at least
4 seconds to call the service monitor mode.
The service monitor indicator lights up and the
header indoor unit number is displayed first. CODE
Heatsink temperature (THS)
Operating current (x1/10)
No.
is also displayed.
Compressor cumulative operating hours
(x100h)
2. Pushing TEMP.
buttons, select the
F1
number of sensor, etc. (CODE No.) to be monitored.
(See the following table.)
3. Pushing
(left side of the button), select an
indoor unit to be monitored. The sensor
temperatures of indoor units and their outdoor unit in
the control group are displayed.
4. Push
button to return to the normal display.
2
4
1
3
Indoor unit data
Data name
CODE No.
01
02
Room temperature (remote control)
Indoor unit intake air temperature (TA)
Indoor unit heat exchanger temperature
(TCJ)
03
04
Indoor unit heat exchanger temperature
(TC)
Indoor unit fan cumulative operating hours
(x1 h)
F3
F8
Indoor unit discharge air temperature
EN
– 26 –
26-EN
Installation Manual
Under Ceiling Type
8 TEST RUN
„Before test run
Procedure 2
Push
button.
• Before turning on the circuit breaker, carry out the
following procedure.
1) Using 500V-megger, check 1MΩ or more exists
between the terminal block L1 to L2 and the
ground.
If 1MΩ or less is detected, do not run the unit. Do
not apply to the remote control circuit.
2) Check the valve of the outdoor unit being opened
fully.
Procedure 3
Using
button, select the operation mode,
[COOL] or [HEAT].
• Do not run the air conditioner in a mode other than
[COOL] or [HEAT].
• The temperature controlling function does not work
during test run.
• The detection of error is performed as usual.
• To protect the compressor at activation time, leave
power-ON for 12 hours or more be for operating.
„Execute a test run
Using the remote control, operate the unit as usual.
For the procedure of the operation, refer to the
attached Owner’s Manual.
Procedure 4
After the test run, push
run.
button to stop a test
A forced test run can be executed in the following
procedure even if the operation stops by thermo.-OFF.
In order to prevent a serial operation, the forced test
run is released after 60 minutes have passed and
returns to the usual operation.
(Display part is same as procedure 1.)
Procedure 5
Push
check button to cancel (release from) the test
run mode.
([TEST] disappears on the display and the status
returns to a normal.)
CAUTION
• Do not use the forced test run for cases other than the
test run because it applies an excessive load to the
devices.
Wired remote control
2, 4
3
1,5
Procedure 1
Keep
button pushed for 4 seconds or more. [TEST]
is displayed on the display part and the selection of
mode in the test mode is permitted.
27-EN
– 27 –
Installation Manual
Under Ceiling Type
▼ Heating test run:
Wireless remote control
ON/OFF → 86 °F (30°C) → 84 °F (29°C) → 86 °F
(30°C) → 84 °F (29°C) → 86 °F (30°C) → 84 °F (29°C)
→ 86 °F (30°C) → (test run) → ON/OFF
Procedure 1
Turn on the circuit breaker of the air conditioner.
The operation is not accepted for 5 minutes when
circuit breaker is turned on at first time after installation,
and 1 minute when circuit breaker is turned on at the
next time and after. After the specified time has
passed, perform a test operation.
Always select
[HIGH] fan
speed.
3, 4,
5, 6
2,7
2
2
Procedure 2
Push “ON/OFF” button on the remote control, select
[COOL] or [HEAT] with “MODE” button, and then select
[HIGH] with “FAN” button.
Procedure 3
Cooling test run
Heating test run
Set the temperature to 64°F Set the temperature to 86 °F
(18°C) with the temp. setup (30°C) with the temp. setup
buttons.
buttons.
Procedure 4
Cooling test run
Heating test run
After confirming a signal
receiving sound “beep”
immediately set the
After confirming a signal
receiving sound “beep”
immediately set the
temperature to 66 °F (19°C) temperature to 84 °F (29°C)
with the temp. setup buttons. with the temp. setup buttons.
Procedure 5
Cooling test run
Heating test run
After confirming a signal
receiving sound “beep”
immediately set the
After confirming a signal
receiving sound “beep”
immediately set the
temperature to 64 °F (18°C) temperature to 86 °F (30°C)
with the temp. setup buttons. with the temp. setup buttons.
Procedure 6
Repeat procedures 4 → 5 → 4 → 5.
Indicators “Operation” (green), “Timer” (green), and
“Ready” (orange) in the wireless receiver section flash
in approx. 10 seconds, and the air conditioner starts
operation. If any of these indicators does not flash,
repeat procedures
2 to 5.
Procedure 7
Upon completion of the test run, push “ON/OFF” button
to stop operation.
<Overview of test run operations using the
wireless remote control>
▼ Cooling test run:
EN
ON/OFF → 64 °F (18 °C) → 66 °F (19°C) → 64 °F
(18°C) → 66 °F (19°C) → 64 °F (18°C) → 66 °F (19°C)
→ 64 °F (18°C) → (test run) → ON/OFF
– 28 –
28-EN
Installation Manual
Under Ceiling Type
9 TROUBLESHOOTING
Procedure 2
Every pushing of
„Confirmation and check
button used to set
When a trouble occurred in the air conditioner, the
check code and the indoor UNIT No. appear on the
display part of the remote control.
The check code is only displayed during the operation.
If the display disappears, operate the air conditioner
according to the following “Confirmation of error
history” for confirmation.
temperature, the trouble history stored in memory is
displayed in order.
The numbers in CODE No. indicate CODE No. [01]
(latest) → [04] (oldest).
REQUIREMENT
Do not push
button because all the trouble history
of the indoor unit will be deleted.
Procedure 3
After confirmation, push
button to return to the
usual display.
Check code
Indoor UNIT No. in
which an error occurred
1. Check the troubles according to the above
procedure.
2. Ask an authorized dealer or qualified service
(maintenance) professional to repair or maintain the
air conditioner.
„Confirmation of error history
When a trouble occurred on the air conditioner, the
trouble history can be confirmed with the following
procedure. (The trouble history is stored in memory up
to 4 troubles.)
The history can be confirmed from both operating
status and stop status.
2
3
1
Procedure 1
When pushing
and
buttons at the same time for
4 seconds or more, the following display appears.
If [Service check] is displayed, the mode enters in
the trouble history mode.
• [01: Order of trouble history] is displayed in CODE
No. window.
• [Check code] is displayed in CHECK window.
• [Indoor unit address in which an error occurred] is
displayed in Unit No..
29-EN
– 29 –
Installation Manual
Under Ceiling Type
„Check codes and parts to be checked
Wired
Wireless remote control
remote
Sensor block display of
Air
control
Judging
device
receiving unit
Main defective parts
Parts to be checked / error description
conditioner
status
display
Operation Timer Ready
Indication
Flashing
GR
GR
OR
No header remote
control
Incorrect remote control setting --- The header remote
control has not been set (including two remote controls).
Remote
control
E01
*
Remote control
communication error
No signal can be received from the indoor unit.
System interconnection wires, indoor P.C. board, remote
control
--- No signal can be sent to the indoor unit.
Remote control
transmission error
Remote
control
E02
E03
*
Indoor unit-remote
control regular
communication error
Remote control, network adapter, indoor P.C. board ---
No data is received from the remote control or network
adapter.
Indoor
Auto-reset
Indoor unit-outdoor
unit serial
communication error
System interconnection wires, indoor P.C. board,
outdoor P.C. board --- Serial communication error
between indoor unit and outdoor unit
E04
E08
E09
Indoor
Indoor
Auto-reset
Auto-reset
*
IPDU-CDB
communication error
Duplicated indoor
addresses
Indoor address setting error --- The same address as the
self-address was detected.
Remote control address setting error --- Two remote
controls are set as header in the double-remote control
control.
Duplicated header
remote controls
Remote
control
(* The header indoor unit stops raising alarm and follower
indoor units continue to operate.)
CPU-CPU
communication error
Indoor P.C. board --- Communication error between main
MCU and motor microcomputer MCU
E10
E18
Indoor
Indoor
Auto-reset
Auto-reset
Entire stop
Header indoor unit-
indoor follower unit
regular communication
error
Indoor P.C. board --- Regular communication is not
possible between header and follower indoor units or
between twin header (main) and follower (sub) units.
IPDU communication
error
E31
F01
Outdoor
Indoor
Communication error between IPDU and CDB
Indoor unit heat
ALT exchanger sensor
(TCJ) error
Heat exchanger sensor (TCJ) , indoor P.C. board ---
Open-circuit or short-circuit of the heat exchanger sensor Auto-reset
(TCJ) was detected.
Indoor unit heat
ALT exchanger sensor (TC) Indoor
error
Heat exchanger sensor (TC), indoor P.C. board --- Open-
circuit or short-circuit of the heat exchanger sensor (TC) Auto-reset
was detected.
F02
F04
F06
Outdoor unit discharge
ALT temp. sensor (TD)
error
Outdoor temp. sensor (TD), outdoor P.C. board --- Open-
circuit or short-circuit of the discharge temp. sensor was Entire stop
detected.
Outdoor
Outdoor temp. sensors (TE/TS), outdoor P.C. board ---
Open-circuit or short-circuit of the heat exchanger temp. Entire stop
sensor was detected.
Outdoor unit temp.
ALT
Outdoor
Outdoor
Outdoor
sensor (TE/TS) error
F07
(F06)
TL sensor may be displaced, disconnected or short-
circuited.
ALT TL sensor error
Entire stop
Outdoor temp. sensor (TO), outdoor P.C. board --- Open-
circuit or short-circuit of the outdoor air temp. sensor was
detected.
Outdoor unit outside
ALT
Operation
continued
F08
F10
air temp. sensor error
Room temp. sensor (TA), indoor P.C. board --- Open-
circuit or short-circuit of the room temp. sensor (TA) was Auto-reset
detected.
Indoor unit room temp.
ALT
Indoor
sensor (TA) error
F12
(F06)
TS sensor may be displaced, disconnected or short-
circuited.
ALT TS sensor error
Outdoor
Entire stop
F13
(L29)
Abnormal temperature was detected by the temp. sensor
of the IGBT heat sink.
ALT Heat sink sensor error Outdoor
Temp. sensor
Entire stop
EN
F15
(F06)
ALT
Outdoor
Temp. sensor (TE/TS) may be connected incorrectly.
Indoor P.C. board --- EEPROM error
Entire stop
Auto-reset
connection error
Indoor unit, other P.C.
board error
F29
SIM
Indoor
30-EN
– 30 –
Installation Manual
Under Ceiling Type
F31
(L29)
Outdoor unit P.C.
board
SIM
Outdoor
Outdoor
Outdoor P.C. board ---- In the case of EEPROM error.
Entire stop
Entire stop
Entire stop
Current detect circuit, power voltage --- Minimum
frequency was reached in the current releasing control or
short-circuit current (Idc) after direct excitation was
detected
Outdoor unit
compressor
breakdown
H01
Wiring error of compressor (open phase)
Outdoor unit
compressor lock
Compressor circuit --- Compressor lock was detected.
Wiring error of compressor (open phase)
H02
H03
Outdoor
Outdoor
Outdoor
Outdoor
Indoor
Current detect circuit, outdoor unit P.C. board ---
Abnormal current was detected in AC-CT or a phase loss Entire stop
was detected.
Outdoor unit current
detect circuit error
H04
(P04)
Case thermostat
operation
Malfunction of the case thermostat
Entire stop
Current, high-pressure switch circuit, outdoor P.C. board
--- Ps pressure sensor error was detected or low-pressure Entire stop
protective operation was activated.
Outdoor unit low-
pressure system error
H06
L03
L07
Duplicated header
indoor units
Indoor address setting error --- There are two or more
Entire stop
SIM
SIM
header units in the group.
Indoor address setting error --- There is at least one
group-connected indoor unit among individual indoor
units.
Group line in individual
indoor unit
Indoor
Entire stop
Indoor group address
not set
Indoor address setting error --- Indoor address group has
not been set.
L08
L09
SIM
SIM
SIM
Indoor
Indoor
Outdoor
Entire stop
Entire stop
Entire stop
Indoor power level not
set
Indoor power level has not been set.
L10
(L29)
Outdoor unit P.C.
board
In the case of outdoor P.C. board jumper wire (for service)
setting error
Network
adapter
central
control
Address setting, central control remote control, network
adapter --- Duplication of address in central control
communication
LAN communication
error
L20
L29
SIM
SIM
Auto-reset
Entire stop
Other outdoor unit error
1) Communication error between IPDU MCU and CDB
MCU
Other outdoor unit
error
Outdoor
Entire stop
2) Abnormal temperature was detected by the heat sink
temp. sensor in IGBT.
Abnormal external
SIM input into indoor unit
(interlock)
External devices, outdoor unit P.C. board --- Abnormal
stop due to incorrect external input into CN80
L30
L31
Indoor
Entire stop
Operation
continued
(thermostat
OFF)
Power supply phase sequence, outdoor unit P.C. board -
-- Abnormal phase sequence of the 3-phase power
supply
Phase sequence error,
SIM
etc.
Outdoor
Indoor fan motor, indoor P.C. board --- Indoor AC fan
error (fan motor thermal relay activated) was detected.
P01
P03
ALT Indoor unit fan error
Indoor
Entire stop
Entire stop
Outdoor unit discharge
An error was detected in the discharge temp. releasing
control.
ALT
Outdoor
temp. error
High-pressure switch --- The IOL was activated or an
error was detected in the high-pressure releasing control Entire stop
using the TE.
Outdoor unit high-
ALT
P04
Outdoor
pressure system error
P05
(P04)
The power cable may be connected incorrectly. Check
Entire stop
ALT Open phase detected Outdoor
open phase and voltages of the power supply.
Abnormal temperature was detected by the temp. sensor
of the IGBT heat sink.
P07
P10
ALT Heat sink overheat
Outdoor
Indoor
Entire stop
Drain pipe, clogging of drainage, float switch circuit,
indoor P.C. board --- Drainage is out of order or the float Entire stop
switch was activated.
Indoor unit water
ALT
overflow detected
P15
(L29)
There may be gas leakage from the pipe or connecting
Entire stop
ALT Gas leakage detected Outdoor
part. Check for gas leakage.
4-way valve, indoor temp. sensors (TC/TCJ) --- An error
Auto-reset
P19
(L29)
Outdoor
ALT 4-way valve error
(Indoor)
was detected due to temperature drop of the indoor unit
(Auto-reset)
heat exchanger sensor when heating.
P20
(P04)
High-pressure
protective operation
ALT
Outdoor
High-pressure protection
Entire stop
31-EN
– 31 –
Installation Manual
Under Ceiling Type
Outdoor unit fan motor, outdoor unit P.C. board --- An
P22
ALT Outdoor unit fan error Outdoor
Outdoor unit inverter
error (overcurrent, locking, etc.) was detected in the
outdoor unit fan drive circuit.
Entire stop
Entire stop
IGBT, outdoor unit P.C. board, inverter wiring,
compressor --- Short-circuit protection for compressor
drive circuit devices (G-Tr/IGBT) was activated.
P26
P29
ALT
Outdoor
Idc activated
Outdoor unit position
error
Outdoor unit P.C. board, high-pressure switch ---
Compressor motor position error was detected.
ALT
Outdoor
Entire stop
Entire stop
Auto-reset
Another indoor unit in the group is raising an alarm.
P31
ALT Other indoor unit error Indoor
E03/L07/L03/L08 alarm check locations and error
description
Check codes in parentheses ( ) are displayed when connected to an outdoor unit other than the new SDI series.
: Lighting : Flashing : OFF : The air conditioner automatically enters the auto-address setting mode.
ALT: When two LEDs are flashing, they flash alternately. SIM: When two LEDs are flashing, they flash in synchronization.
Receiving unit display OR: Orange GR: Green
EN
32-EN
– 32 –
EH99864801
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