Toshiba Carrier Rav Sp180ut Ul User Manual

AIR CONDITIONER (SPLIT TYPE)  
Installation Manual  
Indoor Unit  
Model name:  
4-way Air Discharge Cassette Type  
RAV-SP180UT-UL  
RAV-SP240UT-UL  
RAV-SP300UT-UL  
RAV-SP360UT-UL  
RAV-SP420UT-UL  
Installation Manual  
Air conditioner (Split type)  
English  
1
Manuel du proprietaire  
Climatiseur (Type split)  
Français  
37  
Installation Manual  
4-way Air Discharge Cassette Type  
1 ACCESSORY PARTS  
Accessory parts  
Part name  
Q’ty  
Shape  
Usage  
Installation Manual  
2
These manual  
(Be sure to hand over to customers)  
Heat insulating pipe  
Installation pattern  
2
1
For heat insulation of pipe connecting section  
For confirmation of ceiling opening and indoor unit  
position  
Installation gauge  
Washer  
– –  
4
For positioning of ceiling position  
For hanging-down unit  
Eccentric washer  
Hose band  
4
For hanging-down unit  
1
For connecting drain pipe  
Heat insulator  
Flexible hose  
1
1
For heat insulation of drain connecting section  
For adjusting center of drain pipe  
Owner’s Manual  
1
(Be sure to hand over to customers)  
Separate sold parts  
• The Ceiling panel and remote control are sold separately. For the installation of these products, follow the  
Installation Manuals supplied with them.  
• The wireless type remote control is designed to be installed by attaching a wireless remote controller kit (sold  
separately) to the standard panel. (The wireless remote controller kit consists of a wireless remote control and  
adjust corner caps with a signal receiving unit.)  
EN  
2-EN  
– 2 –  
Installation Manual  
4-way Air Discharge Cassette 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.  
3-EN  
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Installation Manual  
4-way Air Discharge Cassette 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.  
EN  
4-EN  
– 4 –  
Installation Manual  
4-way Air Discharge Cassette Type  
3 SELECTION OF INSTALLATION PLACE  
WARNING  
Install the air conditioner at enough strong place to withstand the weight of the unit.  
If the strength is not enough, the unit may fall down resulting in injury.  
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.  
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.  
• 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).  
(Should the unit be used in these places, special protective measures are needed.)  
• A restaurant kitchen where a lot of oil is used or place near machines in a factory (Oil adhering to the heat  
exchanger and resin part (turbo fan) in the indoor unit may reduce the performance, generate mist or dew drop,  
or deform or damage resin parts.)  
• Place where organic solvent is used nearby.  
• Place close to a machine generating high frequency.  
• 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.  
(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.)  
• Do not use the air conditioner for special purposes such as preserving food, precision instruments, or art objects,  
or where breeding animals or growing plants are kept. (This may degrade the quality of preserved materials.)  
• Place where any of high-frequency appliances (including inverter devices, private power generators, medical  
equipment, and communication equipment) and inverter-type fluorescent light is installed.  
(A malfunction of the air conditioner, abnormal control, or problems due to noise to such appliances/equipment  
may occur.)  
• When the wireless remote control is used in a room equipped with an inverter-type fluorescent light or at a place  
exposed to direct sunlight, signals from the remote control may not be received correctly.  
• Place near a door or window exposed to humid outside air (Dew droping may form.).  
• Place where special spray is used frequently.  
5-EN  
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Installation Manual  
4-way Air Discharge Cassette Type  
Installation space  
Secure the specified space in the figure for installation and servicing.  
Model RAV-  
SP180, SP240 Type  
A in (mm)  
10.7” (271) or more  
13.1” (334) or more  
SP300, SP360, SP420 Type  
unit : in (mm)  
7.9” (200)  
200 (7.9)  
39.4” (1000) or more  
1000 (39.4) or more  
Check port  
Check port  
450×450  
17.7” x 17.7”  
(17.7×17.7)  
(450 x 450)  
Check port  
Obstacle  
Obstacle  
Check port  
17.7” x 17.7”  
450×450  
(450 x 450)  
(17.7×17.7)  
Check port must be located on the  
Check port must be located on  
Fresh air inlet box side, if it is installed.  
the Fresh air inlet box side,  
if it is installed  
Selection of installation place  
In case of continued operation of the indoor unit under high-humidity conditions as described below, dew may  
condense and water may drop.  
Especially, high-humidity atmosphere (dew point temperature : 73.4°F (23°C) or more) may generate dew inside  
the ceiling.  
1. Unit is installed inside the ceiling with slated roof.  
2. Unit is installed at a location using inside of the ceiling as fresh air take-in path.  
3. Kitchen  
Advice  
• Set a service check opening panel at right side of the unit (size: 17.7" × 17.7" (450 × 450mm) or more) for piping,  
maintenance, and servicing.  
• If installing a unit at such place, put insulating material (glass wool, etc.) additionally on all the positions of the  
indoor unit which come to contact with high-humidity atmosphere.  
REQUIREMENT  
When the humidity inside the ceiling seems to be higher than 80%, attach a heat insulator to the side (top)  
surface of the indoor unit. (Use a heat insulator that is 0.4" (10 mm) or more thick.)  
EN  
6-EN  
– 6 –  
Installation Manual  
4-way Air Discharge Cassette Type  
Ceiling height  
Model RAV-  
SP180, SP240 Type  
Possible installed ceiling height  
Up to 12’6” (3.8 m)  
SP300, SP360, SP420 Type  
Up to 15’1” (4.6 m)  
When the height of the ceiling exceeds the distance of the item Standard/4-way in Table on the next page, the hot  
air is difficult to reach the floor.  
Therefore, it is necessary to change the setup value of the high ceiling switch or discharge direction.  
Height list of ceiling possible to be installed  
Unit : ft (m)  
Model RAV-  
SP180 Type  
3-way  
SP240 Type  
3-way  
SP300, SP360, SP420 Type  
High ceiling setup  
Set data  
No. of discharge direction 4-way  
2-way  
4-way  
2-way  
4-way  
3-way  
2-way  
9’2”  
Standard (Factory default)  
(2.8)  
10’6”  
(3.2)  
11’6”  
(3.5)  
9’10”  
(3.0)  
10’10” 11’10”  
12’10”  
(3.9)  
13’9”  
(4.2)  
14’9”  
(4.5)  
0000  
0001  
0003  
(3.3)  
(3.6)  
10’6”  
11’6”  
(3.5)  
12’6”  
(3.8)  
10’10”  
(3.3)  
11’6”  
(3.5)  
12’6”  
(3.8)  
13’9”  
(4.2)  
14’5”  
(4.4)  
15’1”  
(4.6)  
High ceiling (1)  
(3.2)  
11’6”  
12’6”  
(3.8)  
11’10”  
(3.6)  
12’6”  
(3.8)  
14’9”  
(4.5)  
15’1”  
(4.6)  
High ceiling (2)  
(3.5)  
REQUIREMENT  
• When using the air conditioner with 2-way/3-way discharge system, a strong wind blows directly if the ceiling  
height is lower than the standard.  
Therefore, change the setting switch according to height of the ceiling.  
• When using the high ceiling (1) or (2) with 4-way discharge system, the draft is apt to be felt due to drop of the  
discharge temperature.  
The lighting time of the filter sign (notification of filter cleaning) on the remote control can be changed according to  
installation conditions.  
When it is difficult to obtain satisfactory heating due to location place of the indoor unit or the structure of the room,  
the detection temperature of heating can be raised.  
Refer to "8 Applicable Controls"in this manual for the setting procedure.  
7-EN  
– 7 –  
Installation Manual  
4-way Air Discharge Cassette Type  
Discharge direction  
As shown in the figure below, air discharge directions can be selected according to the shape of the room and the  
location of the indoor unit installation.  
3 directions  
2 directions  
• Use a Air discharge direction kit (sold separately) to change discharge directions.  
Discharge directions are limited. Follow the Installation Manual supplied with the Air discharge direction kit.  
Air discharge direction kit  
(sold separately)  
EN  
8-EN  
– 8 –  
Installation Manual  
4-way Air Discharge Cassette Type  
4 INSTALLATION  
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.  
• To move the indoor unit, hold the hooking metals (4 positions) only.  
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.  
External view  
Unit : in (mm)  
Ceiling bottom surface  
6.8" (172)  
Refrigerant  
pipe  
connecting  
port (Liquid) B  
4.4" (112)  
Ceilingbottom  
surface  
2.3" (58)  
1.7" (42)  
Ceiling  
opening  
dimension  
Refrigerant  
pipe  
connecting  
port (Gas) C  
Hole for power  
supply cable  
33.1" (840) Unit external dimension  
16.1" (408)  
Conduit hole  
(knockout)  
Electric parts box  
Hole for remote  
control wires  
1.6" (40)  
Drain pipe  
connecting  
port  
Ceiling bottom  
surface  
16.4" (416.5)  
27.2" ± 0.8" (690 ± 20) Hanging bolt pitch  
33.9" - 35.8" (860 - 910) Ceiling opening dimension  
37.4" (950) Panel external dimension  
7.4" (189)  
Ceiling  
bottom  
surface  
Hanging bolt 3/8" (M10)  
(To be procured locally)  
Knockout for  
Auxiliary fresh air  
flange  
Z view  
For Ø3.9" (100)  
Ceiling bottom surface  
Ceiling panel (sold separately)  
Unit : in (mm)  
Model RAV  
A
B
C
Model RAV  
A
B
C
SP180 Type  
SP240 Type  
SP300 Type  
10.1” (256)  
10.1” (256)  
12.6” (319)  
Ø1/4” (6.4)  
Ø3/8” (9.5)  
Ø3/8” (9.5)  
Ø1/2” (12.7)  
Ø5/8” (15.9)  
Ø5/8” (15.9)  
SP360 Type  
SP420 Type  
12.6” (319)  
12.6” (319)  
Ø3/8” (9.5)  
Ø3/8” (9.5)  
Ø5/8” (15.9)  
Ø5/8” (15.9)  
9-EN  
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Installation Manual  
4-way Air Discharge Cassette Type  
Treatment of ceiling  
Opening a ceiling and  
The ceiling differs according to structure of building.  
For details, consult your constructor or interior finish  
contractor.  
In the process after the ceiling board has been  
removed, it is important to reinforce ceiling foundation  
(frame) and to keep horizontal level of installed ceiling  
correctly in order to prevent vibration of ceiling board.  
installation of hanging bolts  
• Consider the piping/wiring after the unit is hung when  
determining the location of the indoor unit installation  
and orientation.  
• After the location of the indoor unit installation has  
been determined, open the ceiling and install  
hanging bolts.  
(1) Cut and remove the ceiling foundation.  
• The dimensions of the ceiling opening and hanging  
bolt pitches are given in the outline drawing and the  
attached installation pattern.  
(2) Reinforce the cut surface of ceiling foundation, and  
add ceiling foundation for fixing the end of ceiling  
board.  
• When a ceiling already exists, lay the drain pipe,  
refrigerant pipe, system interconnection wires, and  
remote control wires to their connection locations  
before hanging the indoor unit.  
Procure hanging bolts and nuts for installing the indoor  
unit (these are not supplied).  
Installation of hanging bolt  
Use 3/8” (M10) hanging bolts (4 pcs, to be local  
procure). Matching to the existing structure, set pitch  
according to size in the unit external view as shown  
below.  
Hanging bolt  
Nut  
3/8" (M10)  
3/8" (M10)  
4 pieces  
New concrete slab  
12 pieces  
Install the bolts with insert brackets or anchor bolts.  
Using the installation pattern (accessory)  
The installation pattern is provided inside the  
packaging cap.  
Rubber  
Anchor bolt  
(Slide type  
bracket)  
(Blade type  
bracket)  
(Pipe hanging  
anchor bolt)  
<For existing ceiling>  
Use the installation pattern positioning a ceiling  
opening and hanging bolts.  
Steel flame structure  
Use existing angles or install new support angles.  
Hanging bolt  
<For new ceiling>  
Use the installation pattern to position the ceiling  
opening when hanging a ceiling.  
• After the hanging bolts have been installed, install  
the indoor unit.  
Hanging bolt Support angle  
• Hook the four holes in the installation pattern to the  
panel fixing screws of the indoor unit.  
• When hanging a ceiling, open the ceiling along the  
outside dimensions of the installation pattern.  
Existing concrete slab  
Use a hole-in anchors, hole-in plugs, or a hole-in bolts.  
Indoor unit  
Installation of ceiling opening and hanging  
bolt  
Panel fixing  
screw  
Hanging bolt  
Level  
EN  
Installation pattern (Accessory)  
hole  
Hanging bracket  
– 10 –  
10-EN  
Installation Manual  
4-way Air Discharge Cassette Type  
• Attach a nut (3/8" (M10): not supplied) and the Ø1.3"  
(34 mm) washer (supplied) to each hanging bolt.  
• Insert a washer on both sides of the T groove of the  
hanging bracket of the indoor unit, and hang the  
indoor unit.  
• Check that the four sides of the indoor unit are level  
using a level vial (levelness: 0.2" (5 mm) or less).  
Indoor unit  
(2) 0.5” - 0.7”  
(12 - 17 mm)  
• Detach the installation gauge (accessory) from the  
installation pattern.  
(1) 0.4” - 1.4”  
(10 - 35 mm)  
• Using the installation gauge, check and adjust the  
positional relation between the indoor unit and the  
ceiling opening (1) (0.4” - 1.4” (10 - 35 mm): 4 sides)  
and the hanging-up height (2) (0.5” - 0.7” (12 - 17  
mm): 4 corners).  
Installation gauge  
Ceiling board  
REQUIREMENT  
(How to use the installation gauge is printed on the  
gauge.)  
Before installation of the indoor unit, be sure to remove  
the cushion for transportation between the fan and the  
bell mouth. Running the unit without removing the  
cushion may damage the fan motor.  
* Procure hanging bolts  
and nuts locally.  
Hanging bolt  
3/8” (M10)  
Remove the 5 screws and detach the  
wire guard. Remove the cushion  
placed between fan and bell mouth.  
Attach back the wire guard.  
Nut  
3/8” (M10)  
Washer (Accessory)  
To prevent the bolt  
from falling off (for  
safety), be sure to set  
it just under the  
Screw  
Wire guard  
Eccentric washer  
(Accessory)  
hanging bracket as  
shown in the figure.  
* Install with the marking  
“UP” facing up.  
Nut  
3/8” (M10)  
Screw  
Clamp  
Screw  
* Do not remove the  
clamp fixing screw on  
the indoor unit.  
Cushion  
Level vial (levelness: 0.2” (5 mm) or less)  
Hanging bolt  
Indoor unit  
Hanging  
bracket  
(1) 0.4” - 1.4”  
(10 - 35 mm)  
Ceiling  
board  
Installation gauge  
11-EN  
– 11 –  
Installation Manual  
4-way Air Discharge Cassette Type  
Installation of ceiling panel  
(Sold separately)  
Install the ceiling panel according to Installation  
Manual attached with it after piping/wiring work has  
completed.  
Check that installation of indoor unit and ceiling  
opening part is correct, and then install it.  
REQUIREMENT  
• Joint the connecting sections of ceiling panel,  
ceiling surface, ceiling panel and indoor unit closely.  
Any gap between them will cause air leakage and  
the generate condensation or water leakage.  
• Remove the adjust corner caps at the four corners  
of the ceiling panel, and then install the ceiling panel  
onto the indoor unit.  
• Make sure that the claws of the four adjust corner  
caps are securely fit.  
* Improper fitting of the claws may cause water  
leakage.  
Installation of remote control  
(Sold separately)  
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.  
Wireless remote control  
The sensor of indoor unit with wireless remote control  
can receive a signal by distance within approx. 23’ (7  
m). Based upon it, determine a place where the remote  
control is operated and the installation place.  
• Operate the remote control, confirm that the indoor  
unit receives a signal surely, and then install it.  
• Keep 3’3” (1 m) or more from the devices such as  
television, stereo, etc.  
(Disturbance of image or noise may generate.)  
• To prevent a malfunction, select a place where is not  
influenced by a fluorescent light or direct sunlight.  
• Two or more (Up to 6 units) indoor units with wireless  
type remote control can be installed in the same  
room.  
EN  
– 12 –  
12-EN  
Installation Manual  
4-way Air Discharge Cassette Type  
5 DRAIN PIPING WORK  
• For length of the traversing drain pipe, restrict to  
65’7” (20 m) or less.  
CAUTION  
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.  
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 droping.  
Inappropriate piping work may result in water  
leakage in the room and wet of furniture.  
Arched  
shape  
NO  
GOOD  
Trap  
• Set the collective piping as shown in the below  
figure.  
Piping/Heat insulating material  
As long as possible (3.9” (100 mm))  
Require the following materials for piping and heat  
insulating at site.  
VP25  
VP25  
VP25  
Hard vinyl chloride pipe VP25  
Piping  
VP30 or more  
Downward slope  
1/100 or more  
(Outer dia. : Ø1.3" (32 mm))  
Foam polyethylene :  
Heat insulator  
Thickness 0.4" (10 mm) or more  
• 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.  
Flexible hose  
Use the attached flexible hose to adjust center  
discrepancy of the hard vinyl chloride pipe or to adjust  
the angle.  
• Do not use the flexible hose as stretched, or do not  
deform it more extent than that in the following figure.  
• Be sure to fix the soft end of the flexible hose with the  
attached hose band.  
• Use the flexible hose on a horizontal level.  
Attached hose  
band  
VP25 vinyl chloride pipe  
(To be local procure)  
Drain pipe  
connecting port  
(Hard socket)  
Attached flexible hose  
OK  
NO GOOD  
Socket for VP25  
(To be local procure)  
Soft socket  
Riser (Trap)  
max  
45°  
Hard socket  
max  
45°  
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.  
90° Bend  
REQUIREMENT  
• Be sure to perform heat insulation of the drain pipes  
of the indoor unit.  
• Never forget to perform heat insulation of the connecting  
part with the indoor unit.  
Align the attached hose band to  
the end of hose, set the  
tightening position upward, and  
then tighten it.  
Drain pipe  
connectingport  
(Transparent)  
VP25 vinyl chloride  
Flexible hose  
(Accessory)  
pipe (To be local  
procure)  
An incomplete heat insulation causes dew droping.  
• 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.  
4’11” - 6’7” (1.5 - 2 m)  
Support  
Socket for VP25 vinyl chloride pipe  
(To be local procure)  
bracket  
1/100 or more  
Heat insulator  
downward  
13-EN  
– 13 –  
Installation Manual  
4-way Air Discharge Cassette Type  
Pour water gradually so that water does not spread on  
the motor of the drain pump.  
Connecting drain pipe  
• Connect a hard socket (procured locally) to the hard  
socket of the attached supplied flexible hose.  
CAUTION  
• Connect a drain pipe (procured locally) to the  
connected hard socket.  
Pour water gently so that it does not spread around  
inside the indoor unit, which may cause a malfunction.  
REQUIREMENT  
• Connect hard vinyl chloride pipes securely using an  
adhesive for vinyl chloride to avoid water leakage.  
Heat  
exchanger  
• It takes some time until the adhesive is dried and  
hardened (refer to the manual of the adhesive). Do  
not apply stress to the joint with the drain pipe  
during this time period.  
Float switch  
connector(3P)  
(CN34: red)  
Drain pan  
Drain up  
When a down-gradient cannot be secured for the  
drainpipe, drain-up piping is possible.  
• The height of the drain pipe must be 33.5" (850 mm)  
or less from the bottom of the ceiling.  
• Take the drain pipe out of the drain pipe joint with the  
indoor unit in 11.8" (300 mm) or less, and bend up  
the pipe vertically.  
• Immediately after the pipe is bent up vertically, lay  
the pipe making a down-gradient.  
• Set downward grading immediately after raising up  
vertically.  
Insert the hose end between the  
Tool for  
heat exchanger and the drain pan,  
pouring  
and then bend the hose downward.  
water  
Bottle  
Water (0.4 - 0.5 gal (1500 - 2000 cc))  
• After the electric work has finished, pour water  
during COOL mode operation.  
• If the electric work has not yet finished, pull out the  
float switch connector (CN34 : Red) from the electric  
parts box, and check draining by plugging the single  
phase 208/230 V power to the terminal blocks L1 and  
L2.  
11.8” (300 mm)  
or less  
If doing so, the drain pump motor operates.  
• Test water drain while checking the operation sound  
of the drain pump motor.  
(If the operation sound changes from continuous  
sound to intermittent sound, water is normally  
drained.)  
Indoor unit  
Underside of ceiling  
After the check, the drain pump motor runs,  
connecting the float switch connector.  
(In case of check by pulling out the float switch  
connector, be sure to return the connector to the  
original position.)  
Check the draining  
In the test run, check that water drain is properly  
performed and water does not leak from the connecting  
part of the pipes.  
EN  
Be sure to check draining also when installed in  
heating period.  
Using a pitcher or hose, pour water (0.4 - 0.5 gal (1500  
- 2000 cc)) into the discharge port before installation of  
the ceiling panel.  
– 14 –  
14-EN  
Installation Manual  
4-way Air Discharge Cassette Type  
Single phase  
208/230 V  
Power  
terminals  
L
1
L2  
CN34  
(RED)  
White  
Red  
Black  
Pull out connector CN34 (Red)  
from P.C. board.  
Black  
Perform heat insulating  
• As shown in the figure, cover the flexible hose and  
hose band with the attached heat insulator up to the  
bottom of the indoor unit without gap.  
• Cover the drain pipe seamlessly with a heat insulator  
to be procured locally so that it overlaps with the  
attached heat insulator of the drain connecting  
section.  
Wrap the attached heat insulator seamlessly from  
the surface of the indoor unit.  
Heat insulator of the Heat insulator  
drain connecting  
section (Accessory)  
(procured locally)  
* Direct the slits and seams of the heat insulator  
upward to avoid water leakage.  
15-EN  
– 15 –  
Installation Manual  
4-way Air Discharge Cassette Type  
6 REFRIGERANT PIPING AND EVACUATING  
Flaring  
Refrigerant Piping  
• Cut the pipe with a pipe cutter.  
1. If the outdoor units are to be mounted on a wall,  
Remove burrs completely.  
make sure that the supporting platform is sufficiently  
Remaining burrs may cause gas leakage.  
strong. The platform should be designed and  
manufactured to maintain its strength over a long  
• Insert a flare nut into the pipe, and flare the pipe.  
As the flaring sizes of R410A differ from those of  
period of time, and sufficient consideration should  
refrigerant R22, the flare tools newly manufactured  
be given to ensuring that the outdoor unit will not fall.  
for R410A are recommended.  
2. Use copper pipe with 0.03" (0.8 mm) or more  
However, the conventional  
tools can be used by adjusting  
projection margin of the  
copper pipe.  
B
thickness. (In case pipe size is Ø5/8" (15.9 mm), with  
0.04" (1.0 mm) or more.)  
3. 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  
R410A tool Conventional  
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.  
Outer dia. of copper  
pipe  
used  
tool used  
R410A  
R410A  
0.06” - 0.08”  
(1.5 - 2.0)  
1/4” (6.4), 3/8” (9.5)  
0 - 0.02”  
(0 - 0.5)  
0.08” - 0.1”  
(2.0 - 2.5)  
1/2” (12.7), 5/8” (15.9)  
CAUTION  
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.  
Flaring dia. meter size : A (Unit : in (mm))  
+0  
A
-0,02"(–0,4)  
Outer dia. of copper  
pipe  
R410A  
1/4” (6.4)  
3/8” (9.5)  
1/2” (12.7)  
5/8” (15.9)  
0.36” (9.1)  
0.52” (13.2)  
0.65” (16.6)  
0.78” (19.7)  
4. Check the gas leakage. (Connected points)  
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)  
Tightening connection  
CAUTION  
Liquid side  
Permissible Piping Length  
• Do not apply excessive torque. Otherwise, the nut  
may crack depending on the conditions.  
and Height Difference  
They vary according to the outdoor unit.  
For details, refer to the Installation Manual attached to  
the outdoor unit.  
EN  
– 16 –  
16-EN  
Installation Manual  
4-way Air Discharge Cassette Type  
Unit : ft•lbs (N•m)  
REQUIREMENT  
Outer dia. of copper pipe  
1/4" (6.4 mm)  
Tightening torque  
10 - 13 (14 - 18)  
24 - 31 (33 - 42)  
37 - 46 (50 - 62)  
46 - 57 (63 - 77)  
For the tools such as charge hose, etc., use those  
manufactured exclusively for R410A.  
3/8" (9.5 mm)  
1/2" (12.7 mm)  
Refrigerant amount to be added  
5/8" (15.9 mm)  
For addition of the refrigerant, add refrigerant “R410A”  
referring to the attached Installation Manual of outdoor  
unit.  
Tightening torque of flare pipe connections  
Pressure of R410A is higher than that of R22.  
(Approx. 1.6 times)  
Be sure to use a scale to charge the refrigerant of  
specified amount.  
Flare at  
indoor  
Therefore, using a torque  
wrench, tighten the flare pipe  
connecting sections which  
connect the indoor and  
outdoor units of the specified  
tightening torque.  
Incorrect connections may  
cause not only a gas leak, but  
also a trouble of the  
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  
troubleshoot the compressor and refrigeration cycle  
malfunction.  
Flare at  
outdoor  
unit side  
refrigeration cycle.  
Align the centers 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.  
Half union  
Flare nut  
Open the valve fully  
Open the valve of the outdoor unit fully. A 4 mm  
hexagonal wrench is required for opening the valve.  
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.  
Thermal insulation process  
Evacuation  
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.  
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.  
• Never use the refrigerant sealed in the outdoor unit  
for air purge.  
REQUIREMENT  
• Apply the thermal insulation to the pipe connecting  
section of the indoor unit securely up to the root  
17-EN  
– 17 –  
Installation Manual  
4-way Air Discharge Cassette Type  
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  
EN  
– 18 –  
18-EN  
Installation Manual  
4-way Air Discharge Cassette Type  
7 ELECTRICAL CONNECTION  
Remote control wiring  
WARNING  
• For single system, use 2 x AWG20 non polarity wire  
is used for the remote control wiring.  
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.  
Wiring  
Incomplete connection or fixation may cause a fire,  
etc.  
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.  
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.  
3. For inter-unit wiring, do not use a wire jointed to  
another on the way.  
Capacity shortage of circuit breaker or incomplete  
installation may cause an electric shock or a fire.  
Wire Quantity x size  
1
Indoor unit - Outdoor unit *  
Ground  
3 x AWG12 (polar)  
1 x AWG12 or thicker  
2 x AWG20 (non-polar)  
CAUTION  
• 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.  
Remote control  
1
* :Length of the system interconnection wires.  
SP300AT2 -  
SP420AT2  
RAV-  
SP180AT2 SP240AT2  
• Be sure to install circuit breaker is not tripped by shock  
waves.  
If circuit breaker is not installed, an electric shock may  
be caused.  
Wire  
length  
164’1” (50  
m) or less  
229’8” (70  
m) or less  
246’1” (75 m) or  
less  
• Be sure to use the cord clamps attached to the  
product.  
CAUTION  
• Do not damage or scratch the conductive core and  
inner insulator of power and system interconnection  
wires when peeling them.  
Use the same size wire for the field power supply wire  
and system interconnection wires when the outdoor unit  
is RAV-SP180AT2.  
• Use the power cord and system interconnection wire  
of specified thickness, type, and protective devices  
required.  
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.  
REQUIREMENT  
• 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.  
• 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.  
19-EN  
– 19 –  
Installation Manual  
4-way Air Discharge Cassette 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)  
• Remove the cover of the electric parts box by taking off the mounting screws (2 positions) and pushing the  
hooking section. (The cover of the electric parts box remains hanged to the hinge.)  
• Remove the 2 screws from the wire cover.  
• Attach the conduit pipe to the conduit plate with a lock nut.  
• Connect the system interconnection wires and remote control wire to the terminal block of the electric parts box.  
Secure the ground wire with the ground screw.  
• Tighten the screws of the terminal block, and fix the wires with cord clamp attached to the electric parts box.  
(Do not apply tension to the connecting section of the terminal block.)  
• Mount the wire cover without catching the wires. (The wire cover should be mounted before the ceiling panel.)  
• Mount the cover of the electric parts box without catching the wires.  
(Mount the cover after wiring on the ceiling panel.)  
Thermal insulation to wiring connecting port  
Hinge  
Screws at 2 positions  
Power supply  
Louver connector  
(CN510: White)  
Wire cover  
Ground screw  
Conduit  
Piping  
Knockout  
terminal block  
connection hole  
Hole for remote  
control wires  
L1 L2  
S
Lock nut  
Remote  
Electric parts  
box cover  
control  
terminal block  
Conduit pipe  
Conduit plate  
Side D  
(Space: 0.33” (8.5 mm))  
Side C  
Cord clamp  
(Space: 0.16” (4 mm))  
Insert the wire to Side C.  
EN  
20-EN  
– 20 –  
Installation Manual  
4-way Air Discharge Cassette Type  
Systeminterconnectionwires Wiring on the ceiling panel  
and ground wire  
According to the Installation Manual of the ceiling  
panel, connect the connector (20P: White) of the  
1. Strip the wire ends.  
ceiling panel to the connector (CN510: White) on P.C.  
System interconnection wire : 0.4” (10 mm)  
board of the electric parts box.  
Ground wire : 0.8” (20 mm)  
2. Match the wire colors with the terminal numbers on  
the indoor and outdoor units’ terminal blocks and  
firmly screw the wires to the corresponding  
Remote Control Wiring  
terminals.  
3. Secure the ground wire with the ground screw.  
4. Fix the wires with a cord clamp.  
• Strip off the wire approx. 0.4” (9 mm) to connect.  
• For a single system, use non polarity, 2 core wire for  
the remote control wiring. (2 x AWG 20)  
Unit: in (mm)  
Terminal block for  
remote control wiring  
of indoor unit  
Terminal block  
0.8” (20)  
Remote  
A
B
1.2” (30)  
0.4” (10)  
A
B
control  
unit  
L
1
L
2
S
Remote control wire  
(Field procurement)  
• For the details of wiring/installation of the remote  
control, refer to the Installation Manual enclosed with  
the remote control.  
Ground wire  
Wiring diagram  
CAUTION  
Single system  
• Firmly tighten the screws of the terminal block.  
Low voltage  
208/230-1-60  
Indoor unit  
A
B
L
1
L
2
S
Keep the wire length as shown in figure below when it  
is connected to the terminal block.  
High voltage  
L
1
L
2
S
Remote  
control  
Outdoor  
unit  
System  
interconnection wire  
21-EN  
– 21 –  
Installation Manual  
4-way Air Discharge Cassette Type  
8 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  
1
3
<When power is turned on for the second (or  
later) time>  
It takes approx. 1 minute until the remote control  
becomes available.  
4
6
Approx. 1 minutes  
“SETTING”  
flashes  
“SETTING”  
goes out  
Remote  
control is  
available  
Power  
on  
1 5  
2
Procedure 1  
Push button and temp. setup  
simultaneously for at least 4 seconds.  
• Normal settings were made as factory default.  
Change the indoor unit settings as required.  
button  
• Use the wired remote control to change the  
settings.  
After a while, the display flashes as shown in the figure.  
Confirm that the CODE No. is [01].  
* 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.  
• If the CODE No. is not [01], push  
the display content, and repeat the procedure from  
the beginning.  
button to erase  
(No operation of the remote control is accepted for a  
while after  
button is pushed.)  
(* Display content varies with  
the indoor unit model.)  
Procedure 2  
Each time you push  
button, indoor unit  
numbers in the control group change cyclically. Select  
the indoor unit you want to change settings for.  
The fan of the selected unit runs and the louvers start  
swinging. You can confirm the indoor unit for which you  
want to change settings.  
EN  
– 22 –  
22-EN  
Installation Manual  
4-way Air Discharge Cassette Type  
Procedure 3  
Using temp. setup  
Using wireless remote control  
/
buttons, specify CODE  
Change the high-ceiling settings with the DIP switch on  
the receiver section P.C. board.  
For details, refer to the manual of the wireless remote  
controller kit. The settings can also be changed with  
the switch on the indoor microcomputer P.C. board.  
No. [ ].  
Procedure 4  
Using timer time  
/
buttons, select SET DATA  
[
].  
* However, once the setting is changed, setting to  
0001 or 0003 is possible but setting to 0000 requires  
a setting data change to 0000 using the wired remote  
control (sold separately) with the normal switch  
setting (factory default).  
Procedure 5  
Push button. When the display changes from  
flashing to lit, the setup is completed.  
• To change settings of another indoor unit, repeat  
from Procedure 2.  
• To change other settings of the selected indoor unit,  
repeat from Procedure 3.  
Use  
button to clear the settings.  
To make settings after  
button was pushed, repeat  
from Procedure 2.  
Procedure 6  
When settings have been completed, push  
button  
to determine the settings.  
SW501-1  
SW501-2  
When  
button is pushed, “SETTING” flashes and  
then the display content disappears and the air  
conditioner enters the normal stop mode.  
MCU(IC501)  
(While “SETTING” is flashing, no operation of the  
remote control is accepted.)  
Setup data  
SW501-1  
SW501-2  
0000  
(Factory default)  
OFF  
OFF  
0001  
0003  
ON  
OFF  
ON  
OFF  
Restore the factory default  
Installing indoor unit on high  
To return the DIP switch settings to the factory default,  
set SW501-1 and SW501-2 to OFF, connect a  
separately sold wired remote control, and then set the  
data of CODE No. [5d] to “0000”.  
ceiling  
When an indoor unit is installed on a ceiling higher than  
the standard height, make the high-ceiling setting for  
fan speed adjustment.  
Follow to the basic operation procedure  
(1 2 3 4 5 6 ).  
• For the CODE No. in Procedure 3, specify [5d].  
• Select the setting data for Procedure 4 from the  
“Height list of ceiling possible to be installed” table on  
page 7 in this manual.  
23-EN  
– 23 –  
Installation Manual  
4-way Air Discharge Cassette Type  
Filter sign setting  
Horizontal louver direction  
According to the installation condition, the lighting time  
of the filter sign (Notification of filter cleaning) can be  
changed.  
1. Push  
and TEMP.  
buttons for at least four  
seconds when the air conditioner is not working.  
flashes.  
Indicates CODE No. “01.”  
Follow to the basic operation procedure  
(1 2 3 4 5 6 ).  
• For the CODE No. in Procedure 3, specify [01].  
• For the [Set data] in Procedure 4, select the setup  
data of filter sign lighting time from the following  
table.  
2. Select an indoor unit to be set by pushing  
button (left side of the button).  
Indoor unit number changes each time you push the  
button.  
UNITNo.  
UNITNo.  
UNITNo.  
1-1  
1-2  
1-3  
Setup data  
0000  
Filter sign lighting time  
Not  
UNITNo.  
1-4  
None  
150 H  
display  
0001  
The fan of the selected unit runs and the louvers  
start swinging.  
3. Change the CODE No. to “45” with TEMP.  
buttons.  
0002  
2500 H (Factory default)  
5000 H  
0003  
0004  
10000 H  
4. Select louver direction setting with TIME  
buttons.  
To secure better effect of  
Louver  
direction  
Louver direction setting  
heating  
setting code  
Smudge reducing position  
(Air direction to reduce ceiling  
contamination) [Factory default]  
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.  
0000  
0002  
Cold draft position  
(Air direction to control cold air fall)  
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.  
5. Push  
button to check the setting.  
The display state changes from flashing to lighting,  
and the setting is fixed.  
6. Push  
* When the cold draft position is selected, ceiling  
contamination is less reduced.  
button to end the setting.  
Setup  
Detection temp shift value  
data  
0000  
0001  
No shift  
+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)  
EN  
– 24 –  
24-EN  
Installation Manual  
4-way Air Discharge Cassette Type  
Swing mode  
03  
1. Push  
for at least four seconds when the air  
Refrigerant  
pipe  
conditioner is not working.  
flashes.  
Indicates CODE No. “F0.”  
2. Select an indoor unit to be set by pushing  
(left side of the button).  
Each time you push the button, unit numbers  
change as follows:  
04  
02  
UNITNo.  
1-1  
UNITNo.  
1-2  
UNITNo.  
1-3  
Drain  
pipe  
Not  
display  
UNITNo.  
1-4  
01  
The fan of the selected unit runs and the louvers  
start swinging.  
3. Select a swing mode by pushing TIME  
buttons.  
4. Push  
5. Push  
button.  
button to complete the setting.  
Swing setup code  
Swing setup code  
0001  
Swing of louvers  
Standard swing  
(Factory default)  
0002  
0003  
Dual swing  
Cycle swing  
CAUTION  
Do not set the swing setup code to “0000”.  
(This setting may cause a failure of the louvers.)  
About “Dual swing”  
“Dual” means that louvers 01 and 03 are directed  
and swing in one direction and louvers 02 and 04 are  
directed and swing in the opposite direction.  
(When louvers 01 and 03 are directed downward,  
louvers 02 and 04 are directed upward.)  
About “Cycle swing”  
The four louvers swing independently at respective  
timings.  
25-EN  
– 25 –  
Installation Manual  
4-way Air Discharge Cassette Type  
Louver lock (No swing)  
Cancel louver lock  
1. Push  
(right side of the button) for at least  
Set the louver direction to “0000” of the louver lock  
four seconds when the air conditioner is not working.  
flashes.  
setup procedure above.  
Indicates CODE No. “F1.”  
2. Select an indoor unit to be set by pushing  
(left side of the button).  
Each time you push the button, unit numbers  
change as follows:  
Setting data  
The fan of the selected unit runs and the louvers  
start swinging.  
0000  
• When the setting is canceled,  
goes out.  
Other operations are the same as those in  
“Louver lock (No swing)”.  
UNITNo.  
1-1  
UNITNo.  
1-2  
UNITNo.  
1-3  
UNITNo.  
1-4  
Power saving mode  
3. Select a louver you want to lock by pushing TEMP.  
buttons.  
1. Push  
button for at least four seconds when  
the air conditioner is not working.  
flashes.  
4. Select the louver direction you do not want to swing  
Indicates CODE No. “C2.”  
by pushing TIME  
buttons.  
2. Select an indoor unit to be set by pushing  
(left side of the button).  
Each time you push the button, unit numbers  
change as follows:  
(1)  
(2)  
(3)  
Setting data  
0001  
0002  
0003  
UNITNo.  
1-1  
UNITNo.  
1-2  
UNITNo.  
1-3  
UNITNo.  
1-4  
(4)  
(5)  
0004  
0005  
The fan of the selected unit runs and the louvers  
start swinging.  
3. Adjust the power save setting by pushing TIME  
buttons.  
Each push of the button changes the power level by  
1% within the range from 100% to 50%.  
* The factory default is 75%.  
* When (4) or (5) is selected, dew drop may occur  
during cooling mode.  
5. Determine the setting by pushing  
button.  
lights  
When the setting has been determined,  
up.  
6. Push  
button to complete the setting.  
0001-0005  
(Louver lock position code)  
Setting of power level in  
power saving mode  
4. Determine the setting by pushing  
button.  
5. Push button to complete the setting.  
EN  
– 26 –  
26-EN  
Installation Manual  
4-way Air Discharge Cassette Type  
Remote control switch  
Outdoor unit data  
Data name  
CODE No.  
monitoring function  
Outdoor unit heat exchanger  
temperature (TE)  
60  
61  
62  
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.  
Outside air temperature (TO)  
Compressor discharge air temperature  
(TD)  
1. Push  
and  
buttons simultaneously for at least  
Compressor intake air temperature  
(TS)  
63  
4 seconds to call the service monitor mode.  
The service monitor indicator lights up and the  
header indoor unit number is displayed first. CODE  
64  
65  
6A  
Heatsink temperature (THS)  
Operating current (x1/10)  
No.  
is also displayed.  
2. Pushing TEMP.  
buttons, select the  
number of sensor, etc. (CODE No.) to be monitored.  
(See the following table.)  
Compressor cumulative operating  
hours (x100h)  
F1  
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  
CODE No.  
Data name  
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  
27-EN  
– 27 –  
Installation Manual  
4-way Air Discharge Cassette Type  
Group control for system of multiple units  
Procedure example 1  
One remote control can control maximum 8 indoor  
units as a group.  
Manual address setup procedure  
While the operation stops, change the setup.  
(Be sure to stop the operation of the unit.)  
Group control in single system  
Outdoor unit Outdoor unit Outdoor unit Outdoor unit  
Outdoor unit  
Indoor unit  
7
Indoor unit  
Indoor unit  
Indoor unit  
Indoor unit  
(Max. 8 units)  
3
4
5
-2,  
-2,  
-2  
4 -1,  
3
Remote  
control  
Finish of address setup by power-ON  
5 --11,,  
• For wiring procedure and wiring method of the  
individual line (Identical refrigerant line) system,  
follow to “Electric work”.  
• 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 circuit breaker is turned on, the automatic  
address setup starts and 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.  
7
3
4 --33,,  
5
-3,  
1
2,6  
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  
Required time up to the finish of automatic  
addressing is approx. 5 minutes.  
(After pushing  
button, operation of the remote  
NOTE  
control is not accepted for approx. 1 minute.)  
(For a group control, No. of the firstly displayed  
indoor unit becomes the header unit.)  
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.  
• The above mentioned system configuration is a  
case when complex systems in which systems of  
the multiple twin unit is controlled as a group by a  
remote control.  
(* Display changes according to  
the model No. of indoor unit.)  
Procedure 2  
Every pushing  
button, the indoor UNIT No. in  
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.  
EN  
– 28 –  
28-EN  
Installation Manual  
4-way Air Discharge Cassette Type  
Procedure 3  
1. Using temp. setup  
Procedure 5  
1. Using temp. setup  
No. [14].  
/
buttons, specify CODE  
/
buttons, specify CODE  
No. [12].  
(CODE No. [12]: Line address)  
2. Using timer time buttons, change the line  
address from [3] to [2].  
3. Push button.  
(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])  
In this time, the setup finishes when the display  
changes from flashing to lighting.  
3. Push  
button.  
In this time, the setup finishes when the display  
changes from flashing to lighting.  
Indoor UNIT No. before setup change is displayed.  
Indoor UNIT No. before setup change is displayed.  
Procedure 4  
1. Using temp. setup  
/
buttons, specify CODE  
Procedure 6  
No. [13].  
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  
select the indoor UNIT No. before change of setup,  
specify CODE No. [12], [13], [14] in order with temp.  
(CODE No. [13]: Indoor address)  
2. Using timer time buttons, change the indoor  
address from [3] to [2].  
3. Push button.  
/
to  
In this time, the setup finishes when the display  
changes from flashing to lighting.  
setup  
/
buttons, and then check the changed  
contents.  
Indoor UNIT No. before setup change is displayed.  
Address change check Before change:  
[3-3-1] After change: [2-2-2]  
Pushing  
button clears the contents of which setup  
was changed.  
(In this case, procedure from 2 is repeated.)  
Indoor UNIT No. before setup change is displayed.  
29-EN  
– 29 –  
Installation Manual  
4-way Air Discharge Cassette Type  
Procedure 7  
Procedure 1  
Push simultaneously  
or more.  
After a while, the display part flashes and the display  
appears as shown below.  
After check of the changed contents, push  
button.  
button, the  
display disappears and the status becomes the usual  
stop status. (When pushing button the operation  
+
buttons for 4 seconds  
(Setup is determined.) When pushing  
from the remote control is not accepted for approx.  
1 minute.)  
In this time, the position can be checked because fan  
and louver of the indoor unit operate.  
* If the operation from the remote control is not  
accepted even 1 minute or more passed after  
• For the group control, the indoor UNIT No. is  
displayed as [  
] and fans and louvers of all the  
pushing  
button, it is considered that the address  
indoor units in the group control operate.  
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.  
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.)  
(* Display changes according to  
the model No. of indoor unit.)  
To recognize the position of the  
corresponding indoor unit though the  
indoor UNIT No. is known  
Procedure 2  
In the group control, every pushing  
indoor UNIT No. in the group control is displayed in  
order.  
button, the  
Check the position during operation stop.  
(Be sure to stop operation of the set.)  
In this time, the position of the indoor unit can be  
confirmed because only fan and louver of the selected  
indoor unit operate.  
(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  
1
to the usual mode.  
2
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  
1,3  
EN  
– 30 –  
30-EN  
Installation Manual  
4-way Air Discharge Cassette Type  
9 TEST RUN  
Before test run  
Wired remote control  
• Before turning on the circuit breaker, carry out the  
following procedure.  
1) Using 500V-megger, check that resistance of  
1MΩ or more exists between the terminal block L1  
to L2 and the ground (grounding).  
2, 4  
3
If resistance of less than 1MΩ is detected, do not  
run the unit.  
1,5  
2) Check the valve of the outdoor unit being opened  
fully.  
Procedure 1  
• To protect the compressor at activation time, leave  
power-ON for 12 hours or more be for operating.  
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.  
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.  
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.  
Procedure 2  
Push  
button.  
Procedure 3  
Using  
button, select the operation mode,  
[COOL] or [HEAT].  
CAUTION  
• Do not run the air conditioner in a mode other than  
[COOL] or [HEAT].  
• The temperature controlling function does not work  
during test run.  
• Do not use the forced test run for cases other than the  
test run because it applies an excessive load to the  
devices.  
• The detection of error is performed as usual.  
Procedure 4  
After the test run, push  
button to stop a test  
run.  
(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.)  
31-EN  
– 31 –  
Installation Manual  
4-way Air Discharge Cassette 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 power of the air conditioner.  
When power is turned on for the first time after  
installation, it takes approx. 5 minutes until the remote  
control becomes available. In the case of subsequent  
power-on, it takes approx. 1 minute until the remote  
control becomes available. Execute a test run after the  
predetermined time has passed.  
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  
– 32 –  
32-EN  
Installation Manual  
4-way Air Discharge Cassette Type  
10TROUBLESHOOTING  
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.  
33-EN  
– 33 –  
Installation Manual  
4-way Air Discharge Cassette 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  
– 34 –  
34-EN  
Installation Manual  
4-way Air Discharge Cassette 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  
35-EN  
– 35 –  
Installation Manual  
4-way Air Discharge Cassette Type  
Outdoor unit fan motor, outdoor unit P.C. board --- An  
P22  
ALT Outdoor unit fan error Outdoor  
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.  
Outdoor unit inverter  
Idc activated  
P26  
P29  
ALT  
ALT  
Outdoor  
Outdoor  
Outdoor unit position  
error  
Outdoor unit P.C. board, high-pressure switch ---  
Compressor motor position error was detected.  
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  
36-EN  
– 36 –  
EH99864701  

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