FG Europe LMTA Series User manual

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1. SAFETY PRECAUTIONS
• Be sure to read this manual thoroughly before installation.
• The warnings and precautions indicated in this manual contain important information
pertaining to your safety. Be sure to observe them.
• Hand this manual, together with the operating manual, to the customer. Request the
customer to keep them on hand for future use, such as for relocating or repairing the
unit.
WARNING Indicates a potentially or imminently hazardous situation
which, if not avoided, could result in death or serious injury.
CAUTION Indicates a potentially hazardous situation that may result in
minor or moderate injury or damage to property.
WARNING
• Installation of this product must be done by experienced service technicians or profes-
sional installers only in accordance with this manual. Installation by non-professional
or improper installation of the product might cause serious accidents such as injury,
water leakage, electric shock, or fire. If the product is installed in disregard of the
instructions in this manual, it will void the manufacturer’s warranty.
• Do not turn on the power until all work has been completed. Turning on the power be-
fore the work is completed can cause serious accidents such as electric shock or fire.
• If refrigerant leaks when you are working, ventilate the area. If the leaking refrigerant
is exposed to a direct flame, it may produce a toxic gas.
• Installation must be performed in accordance with regulations, codes, or standards for
electrical wiring and equipment in each country, region, or the installation place.
• Do not use means to accelerate the defrosting process or to clean, other than those
recommended by the manufacturer.
• This appliance is not intended for use by persons (including children) with reduced
physical, sensory or mental capabilities, or lack of experience and knowledge, unless
they have been given supervision or instruction concerning use of the appliance by a
person responsible for their safety. Children should be supervised to ensure that they
do not play with the appliance.
CAUTION
• Read carefully all safety information written in this manual before you install or use the
air conditioner.
• Install the product by following local codes and regulations in force at the place of
installation, and the instructions provided by the manufacturer.
• This product is part of a set constituting an air conditioner. The product must not be
installed alone or be installed with non-authorized device by the manufacturer.
• Always use a separate power supply line protected by a circuit breaker operating on all
wires with a distance between contact of 3 mm for this product.
• To protect the persons, earth (ground) the product correctly, and use the power cable
combined with an Earth Leakage Circuit Breaker (ELCB).
CAUTION
• This product is not explosion proof, and therefore should not be installed in explosive
atmosphere.
• To avoid getting an electric shock, never touch the electrical components soon after
the power supply has been turned off. After turning off the power, always wait 5 min-
utes or more before you touch the electrical components.
• This product contains no user-serviceable parts. Always consult experienced service
technicians for repairing.
• When moving or relocating the air conditioner, consult experienced service technicians
for disconnection and reinstallation of the product.
• Do not place any other electrical products or household belongings under the product.
Condensation dripping from the product might get them wet, and may cause damage
or malfunction to the property.
• Be careful not to scratch the air conditioner when handling it.
• After installation, explain correct operation to the customer, using the operating manual.
2. ABOUT THIS PRODUCT
2.1. Precautions for using R410A refrigerant
The basic installation work procedures are the same as conventional refrigerant (R22)
models.
However, pay careful attention to the following points:
Since the working pressure is 1.6 times higher than that of conventional refrigerant (R22)
models, some of the piping and installation and service tools are special. (See the table
below.)
Especially, when replacing a conventional refrigerant (R22) model with a new refrigerant
R410A model, always replace the conventional piping and flare nuts with the R410A
piping and flare nuts.
Models that use refrigerant R410A have a different charging port thread diameter
to prevent erroneous charging with conventional refrigerant (R22) and for safety.
Therefore, check beforehand. [The charging port thread diameter for R410A is
1/2-20 UNF]
Be more careful that foreign matter (oil, water, etc.) does not enter the piping than with
refrigerant (R22) models. Also, when storing the piping, securely seal the opening by
pinching, taping, etc.
When charging the refrigerant, take into account the slight change in the composition of
the gas and liquid phases. And always charge from the liquid phase where refrigerant
composition is stable.
AIR CONDITIONER
Wall Mounted Type INSTALLATION MANUAL
Contents
1. SAFETY PRECAUTIONS.................................................................. 1
2. ABOUT THIS PRODUCT................................................................... 1
3. GENERAL SPECIFICATION ............................................................. 2
4. ELECTRICAL REQUIREMENT ......................................................... 2
5. SELECTING THE MOUNTING POSITION ....................................... 3
6. INSTALLATION WORK ..................................................................... 3
7. ELECTRICAL WIRING ..................................................................... 5
8. FINISHING ........................................................................................ 6
9. FRONT PANEL REMOVAL AND INSTALLATION ............................. 6
10. TEST RUN......................................................................................... 7
11. REMOTE CONTROLLER INSTALLATION........................................ 7
12. OPTIONAL KIT INSTALLATION........................................................ 7
13. INSTALLATION WORK (option) ........................................................ 8
14. SPECIAL INSTALLATION METHODS............................................... 9
15. REMOTE CONTROLLER CUSTOM CODE SETTING ................... 10
16. FUNCTION SETTING...................................................................... 10
17. CUSTOMER GUIDANCE ................................................................ 12
18. ERROR CODES.............................................................................. 12
PART No. 9387082050-02
For authorized service personnel only.[Original instructions]
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2.2. Special tools for R410A
Tool name Change from R22 to R410A
Gauge manifold
Pressure is high and cannot be measured with a R22
gauge. To prevent erroneous mixing of other refrigerants,
the diameter of each port has been changed.
It is recommended to use gauge with seals -0.1 to 5.3 MPa
(-1 to 53 bar) for high pressure.
-0.1 to 3.8 MPa (-1 to 38 bar) for low pressure.
Charge hose To increase pressure resistance, the hose material and base
size were changed. (R410A)
Vacuum pump
A conventional vacuum pump can be used by installing a
vacuum pump adapter.
(Use of a vacuum pump with a series motor is prohibited.)
Gas leakage detector Special gas leakage detector for HFC refrigerant R410A.
Copper pipes
It is necessary to use seamless copper pipes and it is desirable that the amount of residual
oil is less than 40 mg/10 m. Do not use copper pipes having a collapsed, deformed or
discolored portion (especially on the interior surface). Otherwise, the expansion value or
capillary tube may become blocked with contaminants.
As an air conditioner using R410A incurs pressure higher than when using R22, it is neces-
sary to choose adequate materials.
WARNING
• Do not use the existing (for R22) piping and flare nuts.
If the existing materials are used, the pressure inside the refrigerant cycle will rise and
cause failure, injury, etc. (Use the special R410A materials.)
• Use (refill or replace with) specified refrigerant (R410A) only. Use of unspecified refrig-
erant can cause product malfunction, burst, or injury.
• Do not mix any gas or impurities except specified refrigerant (R410A). Inflow of air or
application of unspecified material makes the internal pressure of the refrigerant cycle
too high, and may cause product malfunction, burst of piping, or injury.
WARNING
• For appropriate working of the air conditioner, install it as written in this manual.
• To connect indoor unit and outdoor unit, use air conditioner piping and cables available
through your local distributor. This manual describes proper connections using such
installation set.
• Do not turn on the power until all work has been completed.
CAUTION
This manual describes how to install the indoor unit only. To install the outdoor unit, (if
any), refer to the installation manual included in each product.
• Be careful not to scratch the air conditioner when handling it.
• After installation, explain correct operation to the customer, using the operating manual.
2.3. Accessories
The following installation accessories are supplied. Use them as required.
Name and Shape Q’ty Name and Shape Q’ty
Operating Manual
1
Cloth tape
1
Installation Manual
(This manual)
1
Tapping screw (Large)
8
Wall hook bracket
1
Tapping screw (Small)
2
Remote controller
1
Air cleaning filter
2
Battery
2
Filter holders
2
Remote controller holder
1
Drain hose insulation
1
The following items are necessary to install this air conditioner. (The items are not includ-
ed with the air conditioner and must be purchased separately.)
Name Q’ty Name Q’ty
Connection pipe assembly 1 Wall cap 1
Connection cable (4-conductor) 1 Saddle 1 set
Wall pipe 1 Drain hose 1
Decorative tape 1 Tapping screws 1 set
Vinyl tape 1 Sealant 1
2.4. Optional parts
Refer to each installation manual for the method of installing optional parts.
Parts name Model name Application
Wired Remote Controller *1UTY-RVNM For air conditioner operation (3-wire type)
Wired Remote Controller *2UTY-RNRZ For air conditioner operation (2-wire type)
Wired Remote Controller *2UTY-RLR For air conditioner operation (2-wire type)
Simple Remote Controller *1UTY-RSNM For air conditioner operation (3-wire type)
Communication kit UTY-XWNX For the installation of wired remote
controller (3-wire type)
Communication kit UTY-TWRX For the installation of wired remote
controller (2-wire type)
External connect kit UTY-XWZX For control input/output port
External input and output PCB *
3UTY-XCSXZ1 For connecting external devices
External input and output
PCB box UTZ-GXXB For the installation of optional parts
*1 Optional communication kit (UTY-XWNX) is necessary for the installation.
*2 Optional communication kit (UTY-TWRX) is necessary for the installation.
*3 Optional External input and output PCB box is necessary for the installation.
3. GENERAL SPECIFICATION
This installation manual briefly outlines where and how to install the air conditioning system. Please
read over the entire set of instructions for the indoor and outdoor units and make sure all accessory
parts listed are with the system before beginning.
3.1. Type of copper pipe and insulation material
CAUTION
Refer to the installation manual of the outdoor unit for description of the length of
connecting pipe or for difference of its elevation.
Gas pipe size (thickness) [mm] Liquid pipe size (thickness) [mm]
Ø
15.88 (5/8 in.)
Ø
9.52 (3/8 in.)
CAUTION
• Wrap heat insulation around both of the gas pipe and the liquid pipe.
No heat-insulation work or incorrect heat-insulation work may cause water leaks.
• In a reverse cycle model, use heat insulation with heat resistance above 120 °C.
• If expected humidity of the installation location of refrigerant pipes is higher than 70
%, wrap the heat insulation around the refrigerant pipes.
If the expected humidity is between 70 % and 80 %, use heat insulation that has
thickness of 15 mm or more.
If the expected humidity is higher than 80 %, use heat insulation that has thickness
of 20 mm or more.
• Using of thinner heat insulation than specified above may cause a condensation on
the surface of the insulation.
• Use heat insulation with thermal conductivity of 0.045 W/(
m•K ) or less, at 20 °C .
3.2. Additional materials required for installation
A. Refrigeration (armored) tape
B. Insulated staples or clamps for connecting wire (See your local electrical codes.)
C. Putty
D. Refrigeration lubricant
E. Clamps or saddles to secure refrigerant piping
4. ELECTRICAL REQUIREMENT
The indoor unit is powered from the outdoor unit. Do not power indoor unit from separate
power source.
WARNING
Standard for electrical wiring and equipment differs in each country or region. Before you
start electrical working, confirm related regulations, codes, or standards.
Cable Conductor size [
mm2
] Type Remarks
Connection cable 1.5 Type 60245 IEC 57 3 cable + Earth (Ground),
1 Ø 230 V
Cable Length: Limit voltage drop to less than 2%. Increase cable gauge if voltage drop is
2% or more.
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5. SELECTING THE MOUNTING POSITION
Decide the mounting position with the customer as follows:
5.1. Indoor unit
(1) Install the indoor unit level on a strong wall which is not subject to vibration.
(2) The inlet and outlet ports should not be obstructed : the air should be able to blow all
over the room.
(3) Install the unit a dedicated electrical branch circuit.
(4) Do not install the unit where it will be exposed to direct sunlight.
(5) Install the unit where connection to the outdoor unit is easy.
(6) Install the unit where the drain pipe can be easily installed.
(7) Take servicing, etc. into consideration and leave the spaces shown in “6.1. Installation
dimensions”. Also install the unit where the filter can be removed.
Correct initial installation location is important because it is difficult to move the unit after it
is installed.
WARNING
Install the indoor unit where is capable to support the weight of the unit. Secure the
unit firmly so that the unit does not topple or fall.
CAUTION
Do not install the unit in the following areas:
• Area with high salt content, such as at the seaside. It will deteriorate metal parts, caus-
ing the parts to fail or the unit to leak water.
• Area filled with mineral oil or containing a large amount of splashed oil or steam, such
as a kitchen. It will deteriorate plastic parts, causing the parts to fail or the unit to leak
water.
• Area where is close to heat sources.
• Area that generates substances that adversely affect the equipment, such as sulfuric
gas, chlorine gas, acid, or alkali. It will cause the copper pipes and brazed joints to cor-
rode, which can cause refrigerant leakage.
• Area that can cause combustible gas to leak, contains suspended carbon fibers or
flammable dust, or volatile in flammables such as paint thinner or gasoline.
• If gas leaks and settles around the unit, it can cause a fire.
• Area where animals may urinate on the unit or ammonia may be generated.
• Do not use the unit for special purposes, such as storing food, raising animals, grow-
ing plants, or preserving precision devices or art objects. It can degrade the quality of
the preserved or stored objects.
• Install the unit where drainage does not cause any trouble.
• Install the indoor unit, outdoor unit, branch box, power supply cable, connection cable,
and remote control cable at least 1 m away from a television or radio receivers. The
purpose of this is to prevent TV reception interference or radio noise.
(Even if they are installed more than 1 m apart, you could still receive noise under
some signal conditions.)
• If children under 10 years old may approach the unit, take preventive measures so that
they cannot reach the unit.
• Install the indoor unit on the wall where the height from the floor is more than 1.8 m.
6. INSTALLATION WORK
CAUTION
• Do not hit or push the human sensor. This may lead to damage or malfunction.
• Do not touch the human sensor. Any scratches or dirt may lead to incorrect detection.
• Do not place large objects near the human sensor. Also keep heating units outside the
sensor’s detection area.
Detection range of the human sensor is as follows.
Vertical angle 90° (Side view)
90° 50°50°
7 m
7 m
Horizontal angle 100° (Top view)
6.1. Installation dimensions
(Wall cap)
1.5 m or more
70 mm or more
88 mm or more Wall hook bracket
140 mm
or more
1.8 m or more
Remote
controller Remote
controller
holder
Tapping screws
(small, accessories)
6.2. Indoor unit piping direction
The piping can be connected in the 7 directions in the figure. When the piping is con-
nected in direction (B), (C), (D) or (E), cut along the piping groove in the side of the front
panel with a hacksaw.
(B) Right
outlet (A) Rear
outlet
(C) Bottom
outlet
(D) Left bottom
outlet
(E) Left
outlet
(Rear)
(F) Centre
outlet
(G) Left rear
outlet
6.3. Cutting the hole in the wall for the connecting piping
(1) Cut a 80 mm diameter hole in the wall at the position shown in the following.
(2) Cut the hole so that the outside end is lower (5 to 10 mm) than the inside end.
(3) Always align the center of the wall hole. If misaligned, water leakage will occur.
(4)
Cut the wall pipe to match the wall thickness, stick it into the wall cap, fasten the cap with
vinyl tape, and stick the pipe through the hole.
(5) For left piping and right piping, cut the hole a little lower so that drain water will flow
freely.
Wall hook bracket Centering marks
LowerLower
10 mm
or more
80 mm hole 10 mm
or more
80 mm hole
Fasten with vinyl tape
5~10 mm
Wall pipe
(Locally pur chased)
Wall cap
(Locally purchased)
(Inside) (Outside)
Wall
WARNING
Always use the wall pipe. If the wall pipe is not used, the cable that is connected between
the indoor unit and the outdoor unit may touch metal, and cause an electric discharge.
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6.4. Installing the wall hook bracket
(1) Install the wall hook bracket so that it is correctly positioned horizontally and vertically.
If the wall hook bracket is titled, water will drip to the floor.
(2)
Install the wall hook bracket so that it is strong enough to support the weight of the unit.
• Fasten the wall hook bracket to the wall with 5 or more screws through the holes near
the outer edge of the bracket.
• Check that there is no rattle at the wall hook bracket.
Wall hook bracket Tapping screws (large, accessories)
CAUTION
Install the wall-hook bracket both horizontally and vertically aligned.
Misaligned installation may cause water leakage.
6.5. Forming the drain hose and pipe
CAUTION
• Insert drain hose and drain cap securely. Drain should slope down to avoid water leakage.
• When inserting the drain hose, no other material than water should be applied.
Application of other material than water will cause deterioration of the hose, and may
cause water leakage.
• After you remove a drain hose, be sure to attach the drain cap.
• When you secure the piping and drain hose with tape, arrange the drain hose so that
it is at the bottom of the piping.
• For drain hose piping in low temperature environment, you need to apply freeze
protection to prevent a frozen drain hose.
After cooling operation is performed in low temperature environment, (when outdoor
temperature under 0 °C,) water in the drain hose could be frozen. Frozen drain water
will block the water flow in the hose, and may cause water leakage at the indoor unit.
[Rear piping, Right piping, Bottom piping]
• Install the indoor unit piping in the direction of the wall hole and bind the drain hose
and pipe together with vinyl tape.
• Install the piping so that the drain hose is at the bottom.
• Wrap the pipes of the indoor unit that are visible from the outside with decorative tape.
Right piping Bind with vinyl tape
Indoor unit drain hose
(bottom)
Pipe (top)
Rear piping
Bottom piping
[For Left rear piping, Left piping]
Interchange the drain cap and the drain hose.
Drain cap
Indoor unit
drain hose
Remove the drain cap by pull-
ing at the projection at the end
of the cap with pliers, etc.
For left outlet piping, cut
off the piping outlet cutting
groove with a hacksaw.
Installing the Drain cap
Use a hexagonal wrench 4 mm at opposite side to
insert the drain cap, till the drain cap contacts the tip
of the drain cock.
No gap
Hexagonal
wrench
Drain
cock
Drain cap
CAUTION
Insert the drain hose and drain cap into the drain port, making sure that it comes
in contact with the back of the drain port, and then mount it. If the drain hose is not
connected properly, leaking will occur.
• For left piping and left rear piping, align the marks on the wall hook bracket and shape
the connection pipe.
• Bend the connection piping at the bend radius of 100 mm or more and install no more
than 35 mm from the wall.
• After passing the indoor piping and drain hose through the wall hole, hang the indoor unit
on the hooks at the top and bottom of the wall hook bracket.
Wall hook
bracket
Alignment marks
Small piping
Connection
piping
Large piping
[Installing the indoor unit]
• Hang the indoor unit from the hooks at the top of the wall hook bracket.
• Insert the spacer, etc. between the indoor unit and the wall hook bracket and separate
the bottom of the indoor unit from the wall.
Indoor unit
Wall hook bracket
(Spacer)
Top hooks
Indoor
unit
(Fitting) Bottom hooks
Wall hook
bracket
• After hooking the indoor unit to the top hook, hook the fittings of the indoor unit to the 2
bottom hooks while lowering the unit and pushing it against the wall.
6.6. Flare connection (Pipe connection)
CAUTION
Tighten the flare nuts with a torque wrench using the specified tightening method.
Otherwise, the flare nuts could break after a prolonged period, causing refrigerant to leak
and generate hazardous gas if the refrigerant comes into contact with a flame.
6.6.1. Flaring
Use special pipe cutter and flare tool designed for R410A pipework.
(1) Cut the connection pipe to the necessary length with a pipe cutter.
(2) Hold the pipe downward so that cuttings will not enter the pipe and remove any burrs.
(3) Insert the flare nut (always use the flare nut attached to the indoor unit(s) and outdoor
unit respectively) onto the pipe and perform the flare processing with a flare tool. Use
the special R410A flare tool, or the conventional flare tool. Leakage of refrigerant may
result if other flare nuts are used.
(4) Protect the pipes by pinching them or with tape to prevent dust, dirt, or water from
entering the pipes.
Die
A
Pipe
B
L
Check if [L] is flared uniformly
and is not cracked or scratched.
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Pipe outside diameter
[mm (in.)]
Dimension A [mm]
Dimension B [mm]
Flare tool for R410A,
clutch type
6.35 (1/4)
0 to 0.5
9.1
9.52 (3/8) 13.2
12.70 (1/2) 16.6
15.88 (5/8) 19.7
19.05 (3/4) 24.0
When using conventional flare tools to flare R410A pipes, the dimension A should be ap-
proximately 0.5 mm more than indicated in the table (for flaring with R410A flare tools) to
achieve the specified flaring. Use a thickness gauge to measure the dimension A.
Width across
flats
Pipe outside diameter [mm (in.)]
Width across flats
of Flare nut [mm]
6.35 (1/4) 17
9.52 (3/8) 22
12.70 (1/2) 26
15.88 (5/8) 29
19.05 (3/4) 36
6.6.2. Bending pipes
CAUTION
• To prevent breaking of the pipe, avoid sharp bends.
• If the pipe is bent repeatedly at the same place, it will break.
• The pipes are shaped by your hands. Be careful not to collapse them.
• Bend R70 mm or more with a pipe bender.
• Do not bend the pipes in an angle more than 90°.
• When pipes are repeatedly bend or stretched, the material will harden, making it difficult
to bend or stretch them anymore.
• Do not bend or stretch the pipes more than 3 times.
• When bending the pipe, do not bend it as
is. The pipe will be collapsed. In this case,
cut the insulating pipe with a sharp cutter
as shown on the right, and bend it after
exposing the pipe. After bending the pipe
as you want, be sure to put the heat insu-
lating pipe back on the pipe, and secure it
with tape.
Pipe
Insulating
Pipe
Cutter
Cut line
6.6.3. Pipe connection
CAUTION
• Be sure to install the pipe against the port on the indoor unit correctly. If the centering
is improper, the flare nut cannot tighten smoothly. If the flare nut is forced to turn, the
threads will be damaged.
• Do not remove the flare nut from the indoor unit pipe until immediately before con-
necting the connection pipe.
• Hold the torque wrench at its grip, keeping it in the right angle with the pipe, in order
to tighten the flare nut correctly.
• Tighten the flare nuts with a torque wrench using the specified tightening method.
Otherwise, the flare nuts could break after a prolonged period, causing refrigerant to
leak and generate hazardous gas if the refrigerant comes into contact with a flame.
• Connect the piping so that the control box cover can easily be removed for servicing
when necessary.
• In order to prevent water from leaking into the control box, make sure that the piping
is well insulated.
When the flare nut is tightened properly by your hand, hold the body side coupling with a
wrench, then tighten with a torque wrench. (See the table below for the flare nut tightening
torques.)
Tighten with 2 wrenches.
Holding wrench
Flare nut
Connection pipe
Torque wrench
Indoor unit pipe
(Body side)
Flare nut [mm (in.)] Tightening torque [N·m (kgf·cm)]
6.35 (1/4) dia. 16 to 18 (160 to 180)
9.52 (3/8) dia. 32 to 42 (320 to 420)
12.70 (1/2) dia. 49 to 61 (490 to 610)
15.88 (5/8) dia. 63 to 75 (630 to 750)
19.05 (3/4) dia. 90 to 110 (900 to 1,100)
Do not remove the cap from the connection pipe before connecting the pipe.
7. ELECTRICAL WIRING
CAUTION
Be careful not to generate a spark as follows for using a flammable refrigerant.
• Do not remove the fuse while the power is on.
• Do not disconnect the wiring while the power is on.
• It is recommended to position the outlet connection in a high position. Place the
cords so that they do not get tangled.
7.1. Wiring system diagram
WARNING
• Before connecting the wires, make sure the power supply is OFF.
• Every wire must be connected firmly.
• No wire should be allowed to touch refrigerant tubing, the compressor, or any mov-
ing part.
• Loose wiring may cause the terminal to overheat or result in unit malfunction. A fire
hazard may also exist. Therefore, be sure all wiring is tightly connected.
• Connect wires to the matching numbers of terminals.
Earth (Ground) line
OUTDOOR UNIT
Please connect to the
specified terminal.
INDOOR UNIT
TERMINAL
Power line
Control line
7.2. Indoor unit wiring
(1) Open the intake grille. Remove the tapping screw for the wire cover and remove the
wire cover.
Screw Wire cover
(2) Remove the tapping screw and while minding the cable clamp hook, remove the cable
clamp.
Screw
Cable clamp
Cable clamp
Hook
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(3) Connect the end of the connection cable fully into the terminal block.
123
25 mm
65 mm
Earth (ground) wire
7.3. How to connect wiring to the terminals
Caution when wiring cable
To strip off the insulation of a lead wire, always use a special tool such as a wire stripper.
If there is no special tool, carefully strip off the insulation by using a knife or other utensil.
(1) Use ring terminals with insulating sleeves as shown in the figure to connect to the
terminal block.
(2) Securely clamp the ring terminals to the wires by using an appropriate tool so that the
wires do not come loose.
Strip : 10 mm Ring terminal
Sleeve
(3) Connect specified wires securely, and fasten them so that there is no stress applied on
the terminals.
(4) Use a screwdriver with an appropriate bit size to tighten the terminal screws. Using of
screwdriver with inappropriate bit size will damage the screw heads, and the screws
will not be tightened properly.
(5) Do not overtighten the terminal screws. Otherwise, the screws may break.
Screw with special washer
Wire Ring terminal
Terminal blocks Wire
Screw with special washer
Ring terminal
(6) See the table for the terminal screw tightening torques.
Tightening torque [N·m (kgf·cm)]
M4 screw 1.2 to 1.8 (12 to 18)
CAUTION
• Match the terminal block numbers and connection cable colors with those of the
outdoor unit or branch box. Incorrect wiring may cause a fire.
• Connect the connection cables firmly to the terminal block. Imperfect installation may
cause a fire.
• When fixing the connection cable with the cable clamp, always fasten the cable at the
plastic jacket portion, but not at the insulator portion. If the insulator is chafed, electric
leakage may occur.
• Always connect the earth (ground) wire. Improper earthing (grounding) work can
cause electric shocks.
• Do not use the earth (ground) screw for the indoor unit to the outdoor unit unless it is
specified.
8. FINISHING
(1) Insulate between pipes.
• Insulate suction and discharge pipes separately.
• For rear, right, and bottom piping, overlap the connection pipe heat insulation and
indoor unit pipe heat insulation and bind them with vinyl tape so that there is no gap.
(2) Temporarily fasten the connection cable along the connection pipe with vinyl tape.
(Wrap to about 1/3 the width of the tape from the bottom of the pipe so that water
does not enter.)
(3) Fasten the connection pipe to the outside wall with a saddle, etc.
(4) Fill the gap between the outside wall pipe hole and the pipe with sealer so that rain
water and wind cannot blow in.
(5) Fasten the drain hose to the outside wall, etc.
*Locally purchased
Pipe
Saddle*
Outside wall cap*
Sealer putty*
(Outdoors)
Wall
Overlap the insulation
Vinyl tape
Wrap with cloth tape
Cloth tape
Drain hose
Pipe
Connection pipe
(heat insulation) Indoor unit pipe
(heat insulation)
Bind the pipes together
so that there is no gap.
Drain hose insulation is used
when the diameter of gas pipe is
Ø12.70 or more.
Butt connection pipe (heat
insulation) against the indoor
unit pipe (heat insulation) and
wrap with drain hose insula-
tion so that there is no gap.
Check the following:
GOOD Drain hose
Saddle
Lifted up Wave End in water
PROHIBITED
9. FRONT PANEL REMOVAL AND INSTALLATION
Intake grille removal Intake grille installation
b
a
Open the intake
grille. While gently
pressing the left
and right mounting
shafts of the intake
grille outward “a”,
remove the intake
grille in direction of
the arrow “b”.
c
While holding the
grille horizontal, set
the left and right
mounting shafts into
the pillow blocks at
the top of the panel
“c”.
To latch each shaft
properly, insert the
shaft until it snaps.
Press 4 places on
the intake grille to
close it completely.
9.1. Front panel removal
(1) Remove intake grille (Refer to “Intake grille removal”.)
(2) Remove 4 caps.
(3) Remove wire cover.
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By the wired remote controller
For the operation method, refer to the installation manual and the operating manual of
the wired remote controller.
The Operation indicator lamp and Timer indicator lamp will simultaneously flash during the
test run mode.
Heating test run will begin in a few minutes when HEAT is selected by the remote
controller [reverse cycle model only].
11.REMOTE CONTROLLER INSTALLATION
Check that the indoor unit correctly receives the signal from the remote controller, then
install the remote controller holder.
CAUTION
Do not install the remote controller holder in the following conditions:
• Any places exposed in direct sunlight
• Positions affected by the heat from a stove or heater
11.1. Remote controller holder installation
Install the remote controller a maximum distance of 7 m from the remote control signal
receiver. After installing the remote controller, check that it operates correctly.
I
nstall the remote controller holder to a wall, pillar, etc. with the tapping screw.
Remote controller
holder fixing
Remote controller
mounting
Remote controller
holder
Tapping
screws
(small,
accessories)
(1) Set
Remote
controller
(2) Down
12.OPTIONAL KIT INSTALLATION
The following optional kits can be connected to this product.
CN6 (External input and
output PCB)
CN12 (Communication kit)
CN2 (Ext. in)
CN3 (Ext. out)
Printed circuit board (PCB)
Option type Connector No.
Wired remote controller *To communication kit
Simple remote controller *To communication kit
Communication kit CN12
External input and output PCB CN6
External connect kit CN2 (External in)
CN3 (External out)
*Communication kit is necessary to install.
CAUTION
• Before installing, be sure to disconnect all power supply.
• Do not touch the heat exchanger.
• When installing or removing parts of the air conditioner, be sure that the wire is not
caught by any parts or pulled hard. It may result in damage or malfunction of the air
conditioner.
(4) Remove 10 screws.
Screws (Wire cover)
Screws (10 places)
Caps (4 places)
Wire cover
NOTES: When replacing the front panel, do not scratch or damage the louver.
(5) The front panel is pulled to the front, raising the upper surface, then the front panel is
removed.
Front panel
9.2. Front panel installation
(1) First, fit the lower part of the front panel, and insert top and middle hooks. (3 top sides,
5 middles)
Front panel
Top hooks
(3 places)
Top holes (3 places)
Indoor unit Middle hooks
(5 places)
Middle hooks
(5 places)
(2) Attach the 10 screws.
(3) Attach the wire cover.
(4) Attach the 4 caps.
(5) Attach the intake grille.
CAUTION
Install the front panel and intake grille securely. If installation is imperfect, the front
panel or intake grille may fall off and cause injury.
10.TEST RUN
Check items
(1) Is operation of each button on the remote control unit normal?
(2) Does each lamp light normally?
(3) Do airflow direction louvers operate normally?
(4) Is the drain normal?
(5) Do not have an abnormal noise and vibration during operation?
Do not operate the air conditioner in test run for a long time.
[Operation method]
Depending on your installation, choose from the following:
By the wireless remote controller (with “TEST RUN” button)
To start test run, press the “START/STOP” button and the “TEST RUN” button on the
remote controller.
To end test run, press the remote controller “START/STOP” button.
By the indoor unit or IR receiver unit
To start test run, press the “MANUAL AUTO” button of the unit for more than 10
seconds (forced cooling).
To end test run, press the “MANUAL AUTO” button for more than 3 seconds or press
the remote controller “START/STOP” button.
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12.1. External input and output
12.1.1. External input
• Indoor unit functions such as Operation/Stop or Forced stop can be done by using
indoor unit terminals.
• “Operation/Stop” mode or “Forced stop” mode can be selected with function setting of
indoor unit.
•
A twisted pair cable (22 AWG) should be used. Maximum length of cable is 150 m.
• Use an external input and output cable with appropriate external dimension, depending
on the number of cables to be installed.
• The wire connection should be separate from the power cable line.
●Dry contact terminal
When a power supply is unnecessary at the input device you want to connect, use the Dry
contact terminal.
1
2
3
*1
PCB
Connector
(CN2)
Connected device
*1: The switch can be used on the following condition: DC 12 V to 24 V, 1 mA to 15 mA.
Operation behavior
●Input signal type
Edge
ON
OFF
●When function setting is “Operation/Stop” mode 1.
Input signal Command
OFF →ON Operation
ON →OFF Stop
●When function setting is “Forced stop” mode.
Input signal Command
OFF →ON Forced stop
ON →OFF Normal
* When the forced stop is triggered, indoor unit stops and Operation/Stop operation by a
remote controller is restricted.
●When function setting is “Operation/Stop” mode 2.
Input signal Command
OFF →ON Operation
ON →OFF Stop (R.C. disabled)
12.1.2. External output
• A twisted pair cable (22AWG) should be used. Maximum length of cable is 25 m.
• Use an external input and output cable with appropriate external dimension, depending
on the number of cables to be installed.
• Output voltage: Hi DC12V±2V, Lo 0V.
• Permissible current: 50mA
Output select
●When interlocking with external device
Connector
(CN3)
PCB
Connected
device
Relay (Locally purchased)
or
●When displaying “Operation/Stop”
Connector
(CN3)
PCB
Connected device
Resistor
LED
Operation behavior
*If function setting “60” is set to “00”
Refer to “16 FUNCTION SETTING”.
12.1.3. Connection methods
Wire modification
• Remove insulation from wire attached to wire kit connector.
• Remove insulation from locally purchased cable. Use crimp type insulated butt
connector to join field cable and wire kit wire.
• Connect the wire with connecting wire with solder.
IMPORTANT: Be sure to insulate the connection between the wires.
Locally purchased External connect kit (option)
Solder and insulate the connected parts.
12.2. Wired remote controller
3-wire type
Black
White
Red
Remote
controller
cable
Remote controller
Connecting
the Optional
parts
Set to “3 WIRE”
Print circuit board
(PCB)
DIP switch
2-wire type
White
Red
Remote
controller
cable
Remote controller
Factory setting
Disconnect the jumper (JM9).
“2 WIRE”
NOTES: Be sure to change the DIP SW to the corresponding remote controller.
When a 2-wire remote controller is connected to a “3WIRE” setting, power will
not be supplied.
When a 3-wire remote controller is connected to a “2WIRE” setting, a
communication error will be detected.
13. INSTALLATION WORK (option)
13.1. Front panel, control box cover removal
(1) Remove the front panel. (Refer to “9.1. Front panel removal”.)
(2) Remove 2 screws, then remove the control box cover.
Control box
cover
Screw
Screw
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13.2. Installing the external connect kit
(1) Install the cable as shown in the following photograph.
Be sure to place the wiring under the tabs.
Tabs
Connector
CN2 or CN3
13.3.
Installing the other optional parts
• Communication kit
• External input and output PCB*
• External input and output PCB box
* Optional External input and output PCB box is necessary for the installation.
Refer to each installation manual for the method of installing the other optional parts.
13.4. Front panel, control box cover replacement
Reinstall by reversing the procedure in “13.1. Front panel, control box cover removal”.
(1) Replace the control box cover and screws.
Screw
Screw
(2) Open a hole in the front panel for the remote controller cable to pass through.
* Choose from 4 knockout holes marked on the inside of the front panel.
(3) Replace the front cover.
Refer to “9.2. Front panel installation”.
14. SPECIAL INSTALLATION METHODS
Group control system
A number of indoor units can be operated at the same time using a single remote controller.
*When connecting different types of indoor units (such as wall mounted, cassette, duct, or
other types), some functions may be restricted.
(1) Connect multiple indoor units in a system.
A
BCDE
I.U. I.U. I.U. I.U.
Remote
controller
A, B, C, D, E : Remote controller cable.
A+B+C+D+E ≤500 m
Select the appropriate cable depending on the total wiring length.
Total wiring length of remote
controller cable
(A+B+C+D+E)
Cross section of cable
500 m or less 0.3-1.25 mm2
Example of wiring method (2-wire type)
Y1
Y2
Remote
controller cable
Remote controller
PCB or terminal block
for wired remote controller
Indoor unit 1 Indoor unit 2 Indoor unit 3 Indoor unit 4
(2) Set the R.C. address (Function setting)
(a) 2-wire type
Automatic setting:
• Addresses will be automatically set when initially starting up this unit. In such a
case, do not change the R.C. address of the indoor unit, and keep it at the initial
setting (00).
• Connect up to 16 indoor units in a system.
Manual setting:
• Only set addresses manually when using different numbers for addresses.
Set the R.C. address of each indoor unit with the wireless remote controller.
Also set the R.C. address of the wired remote controller. For details, please refer
to the remote controller installation manual.
* In manual setting, connect up to 15 indoor units in a system.
* Do not use the R.C. address “00”.
(b) 3-wire type
Manual setting:
• Set the R.C. address of each indoor unit with the wireless remote controller.
• Set each R.C. address in sequence from “00”.
• Connect up to 16 indoor units in a system.
Example of R.C. address setting (3-wire type)
RC AD
00
RC AD
01
RC AD
02
RC AD
03
Remote
controller
Indoor unit 1 Indoor unit 2 Indoor unit 3 Indoor unit 4
Remote controller address setting
(♦... Factory setting)
Function
Number Setting Value Setting Description
00
00 2-wired type: Setting prohibited ♦
3-wired type: Unit no. 0
01 Unit no. 1
02 ~ 13 Unit no. 2 ~ Unit no. 13
14 Unit no. 14
15 Unit no. 15
* Do not use the same setting value.
* After completing the Function Setting, be sure to disconnect the power supply and then
reconnect it.
NOTES:
Set the R.C. address by the wireless remote controller.
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15.REMOTE CONTROLLER CUSTOM CODE SETTING
When two or more air conditioners are installed in a room and the remote controller is
operating an air conditioner other than the one you wish to set, change the custom code
of the remote controller to operate only the air conditioner you wish to set (4 selections
possible).
Remote Controller Custom Code Setting
Use the following steps to select the custom code of the remote controller. (Note that the
air conditioner cannot receive a signal if the air conditioner has not been set for the match-
ing custom code.)
(1) Press the START/STOP ( ) button until only the
clock is displayed on the remote controller display.
(2) Press the “MODE” button for at least 5 seconds to dis-
play the current custom code (initially set to A).
(3) Press the “TEMP.” ( / ) buttons to change the cus-
tom code between A↔B↔C↔D.
Match the code on the display to the air conditioner
custom code.
(4) Press the “MODE” button again to return to the clock
display. The custom code will be changed.
• If no buttons are pressed within 30 seconds after the custom code is displayed, the
system returns to the original clock display. In this case, start again from step 1.
• The air conditioner custom code is set to A prior to shipment.
• Depending on the remote controller, the custom code may return to custom code A
when the batteries are replaced. In this case, if you use a code other than A, reset
the code after replacing the batteries. If you do not know the air conditioner custom
code setting, try each code (A→B→C→D) until you find the code which operates the
air conditioner.
16.FUNCTION SETTING
Perform the function setting according to the installation conditions using the remote
controller.
CAUTION
• Confirm whether the wiring work for outdoor unit has been finished.
• Confirm that the cover for the electrical enclosure on the outdoor unit is in place.
• This procedure changes to the function settings used to control the indoor unit
according to the installation conditions. Incorrect settings can cause the indoor unit to
malfunction.
• After the power is turned on, perform the function setting according to the installation
conditions using the remote controller.
• The settings may be selected between the following two: Function Number or Setting
Value.
• Settings will not be changed if invalid numbers or setting values are selected.
• Refer to the installation manual enclosed with the wired remote controller when the
wired remote controller (option) is used.
Entering the Function Setting Mode
While pressing the “POWERFUL” button and “TEMP.” ( ) button simultaneously, press
the “RESET” button to enter the function setting mode.
Selecting the Function Number and Setting Value [Reverse cycle model]
(1) Press the “TEMP.” ( / ) buttons to select the func-
tion number. (Press the “10°C HEAT” button to switch
between the left and right digits.)
(2) Press the “POWERFUL” button to proceed to setting
value. (Press the “POWERFUL” button again to return
to the function number selection.)
(3) Press the “TEMP.” ( / ) buttons to select the setting
value. (Press the “10°C HEAT” button to switch between
the left and right digits.)
(4) Press the “MODE” button once to send the function setting information. Please con-
firm the beeping sound.
(5) Next, please press START/STOP ( ) button once to fix the function setting.
Please confirm the beeping sound.
(6) Press the “RESET” button to cancel the function setting mode.
(7) After completing the function setting, be sure to turn off the power and turn it on
again.
Selecting the Function Number and Setting Value [Cool model]
(1) Press the “TEMP.” ( / ) buttons to select the func-
tion number. (Press the “ECONOMY” button to switch
between the left and right digits.)
(2) Press the “POWERFUL” button to proceed to setting
value. (Press the “POWERFUL” button again to return
to the function number selection.)
(3) Press the “TEMP.” ( / ) buttons to select the set-
ting value. (Press the “ECONOMY” button to switch
between the left and right digits.)
Function Number
Setting
Value
Function Number
Setting
Value
(4) Press the “MODE” button once to send the function setting information. Please con-
firm the beeping sound.
(5) Next, please press START/STOP ( ) button once to fix the function setting. Please
confirm the beeping sound.
(6) Press the “RESET” button to cancel the function setting mode.
(7) After completing the function setting, be sure to turn off the power and turn it on again.
CAUTION
After turning off the power, wait 30 seconds or more before turning on it again. The
function setting does not become active unless the power is turned off then on again.
Filter sign
Select appropriate intervals for displaying the filter sign on the indoor unit according to the
estimated amount of dust in the air of the room.
If the indication is not required, select “No indication” (03).
(♦... Factory setting)
Function
Number Setting Value Setting Description
11
00 Standard (400 hours)
01 Long interval (1,000 hours)
02 Short interval (200 hours)
03 No indication ♦
Room temperature control for indoor unit sensor
Depending on the installed environment, correction of the room temperature sensor may
be required. Select the appropriate control setting according to the installed environment.
The temperature correction values show the difference from “Standard setting” (00) (manu-
facturer’s recommended value).
(♦... Factory setting)
Function Number Setting
Value Setting Description
30
(For cooling)
31
(For heating)
00 Standard setting ♦
01 No correction 0.0 °C (0 °F)
02 -0.5 °C (-1 °F)
More
Cooling
Less
Heating
03 -1.0 °C (-2 °F)
04 -1.5 °C (-3 °F)
05 -2.0 °C (-4 °F)
06 -2.5 °C (-5 °F)
07 -3.0 °C (-6 °F)
08 -3.5 °C (-7 °F)
09 -4.0 °C (-8 °F)
10 +0.5 °C (+1 °F)
Less
Cooling
More
Heating
11 +1.0 °C (+2 °F)
12 +1.5 °C (+3 °F)
13 +2.0 °C (+4 °F)
14 +2.5 °C (+5 °F)
15 +3.0 °C (+6 °F)
16 +3.5 °C (+7 °F)
17 +4.0 °C (+8 °F)
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Room temperature control for wired remote controller sensor
Depending on the installed environment, correction of the wire remote temperature sensor
may be required. Select the appropriate control setting according to the installed environment.
To change this setting, set Function 42 to “Both” (01).
Ensure that the Thermo Sensor icon is displayed on the remote controller screen.
(♦... Factory setting)
Function Number Setting
Value Setting Description
35
(For cooling)
36
(For heating)
00 No correction ♦
01 No correction 0.0 °C (0 °F)
02 -0.5 °C (-1 °F)
More
Cooling
Less
Heating
03 -1.0 °C (-2 °F)
04 -1.5 °C (-3 °F)
05 -2.0 °C (-4 °F)
06 -2.5 °C (-5 °F)
07 -3.0 °C (-6 °F)
08 -3.5 °C (-7 °F)
09 -4.0 °C (-8 °F)
10 +0.5 °C (+1 °F)
Less
Cooling
More
Heating
11 +1.0 °C (+2 °F)
12 +1.5 °C (+3 °F)
13 +2.0 °C (+4 °F)
14 +2.5 °C (+5 °F)
15 +3.0 °C (+6 °F)
16 +3.5 °C (+7 °F)
17 +4.0 °C (+8 °F)
Auto restart
Enable or disable automatic restart after a power interruption.
(♦... Factory setting)
Function
Number Setting Value Setting Description
40 00 Enable ♦
01 Disable
* Auto restart is an emergency function such as for power outage etc. Do not attempt to
use this function in normal operation. Be sure to operate the unit by remote controller or
external device.
Room temperature sensor switching
(Only for wired remote controller)
When using the Wired remote controller temperature sensor, change the setting to “Both” (01).
(♦... Factory setting)
Function
Number Setting Value Setting Description
42 00 Indoor unit ♦
01 Both
00: Sensor on the indoor unit is active.
01: Sensors on both indoor unit and wired remote controller are active.
* Remote controller sensor must be turned on by using the remote controller.
Remote controller custom code
(Only for wireless remote controller)
The indoor unit custom code can be changed. Select the appropriate custom code.
(♦... Factory setting)
Function
Number Setting Value Setting Description
44
00 A ♦
01 B
02 C
03 D
External input control
“Operation/Stop” mode or “Forced stop” mode can be selected.
(♦... Factory setting)
Function
Number Setting Value Setting Description
46
00 Operation/Stop mode 1 ♦
01 (Setting forbidden)
02 Forced stop mode
03 Operation/Stop mode 2
Room temperature sensor switching (Aux.)
To use the temperature sensor on the wired remote controller only, change the setting to
“Wired remote controller” (01).
This function will only work if the function setting 42 is set at “Both” (01).
(♦... Factory setting)
Function
Number Setting Value Setting Description
48 00 Both ♦
01 Wired remote controller
Indoor unit fan control for energy saving for cooling
Enables or disables the power-saving function by controlling the indoor unit fan rotation when
the outdoor unit is stopped during cooling operation.
(♦... Factory setting)
Function
Number Setting Value Setting Description
49
00 Disable
01 Enable
02 Remote controller ♦
00: When the outdoor unit is stopped, the indoor unit fan operates continuously following
the setting on the remote controller.
01: When the outdoor unit is stopped, the indoor unit fan operates intermittently at a very
low speed.
02: Enable or disable this function by remote controller setting.
*When using a wired remote controller without Indoor unit fan control for energy saving for
cooling function, or when connecting a single split converter, the setting cannot be made
by using the remote controller. Set to (00) or (01).
To confirm if the remote controller has this function, refer to the operating manual of each
remote controller.
Switching functions for external output terminal
Functions of the external output terminal can be switched. For details, refer to “12.1. External
input and output”.
(♦... Factory setting)
Function
Number Setting Value Setting Description
60
00 Operation status ♦
09 Error status
10 Indoor unit fan operation status
12 Set point attainment status
Server room control switching
Switches between normal control and server room control.
To use this function, address setting of the primary unit and secondary unit needs to be done.
(♦... Factory setting)
Function
Number Setting Value Setting Description
96
00 Normal control ♦
01 Server room control (Primary unit)
02 Server room control (Secondary unit)
Setting record
Record any changes to the settings in the following table.
Setting Description Setting Value
Remote controller address setting
Filter sign
Room temperature control for indoor
unit sensor
Cooling
Heating
Room temperature control for wired
remote controller sensor
Cooling
Heating
Auto restart
Room temperature sensor switching
Remote controller custom code
External input control
Room temperature sensor switching (Aux.)
Indoor unit fan control for energy saving for cooling
Switching functions for external output terminal
Server room control switching
After completing the function setting, be sure to turn off the power and turn it on again.
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17.CUSTOMER GUIDANCE
Explain the following to the customer in accordance with the operating manual:
(1) Starting and stopping method, operation switching, temperature adjustment, timer, air
flow switching, and other remote control unit operations.
(2) Air filter removal and cleaning, and how to use the air louvers.
(3) Give the operating manual to the customer.
18.ERROR CODES
If you use a wireless remote controller, the lamp on the photo detector unit will output error
codes by way of blinking patterns. If you use a wired remote controller, error codes will ap-
pear on the remote control display. See the lamp blinking patterns and error codes in the
table. An error display is displayed only during operation.
Error display Wired
remote
controller
Error code
Description
Operation
indicator
lamp
(green)
Timer
indicator
lamp
(orange)
Economy
indicator
lamp
(green)
●(1) ●(1)
◊
Serial communication error
●(1) ●(2)
◊
• Wired remote controller
communication error
• Server room control
communication error
●(1) ●(5)
◊
Check run unfinished
●(1) ●(6)
◊
Peripheral unit transmission PCB
connection error
●(2) ●(1)
◊
Unit number or Refrigerant circuit
address setting error
[Simultaneous Multi]
●(2) ●(2)
◊
Indoor unit capacity error
●(2) ●(3)
◊
Combination error
●(2) ●(4)
◊
• Connection unit number error
(indoor secondary unit)
[Simultaneous Multi]
• Connection unit number error
(indoor unit or branch unit)
[Flexible Multi]
●(2) ●(6)
◊
Address setting error in wired
remote controller system
●(2) ●(7)
◊
Primary unit, secondary unit set-
up error [Simultaneous Multi]
●(3) ●(2)
◊
Indoor unit PCB model
information error
●(3) ●(5)
◊
Manual auto switch error
●(4) ●(1)
◊
Room temp. sensor error
●(4) ●(2)
◊
Indoor unit Heat Ex. Middle temp.
sensor error
●(5) ●(1)
◊
Indoor unit fan motor error
●(5) ●(3)
◊
Drain pump error
●(5) ●(7)
◊
Damper error
●(5) ●(8)
◊
Intake grille error
●(5) ●(15)
◊
Indoor unit error
●(6) ●(2)
◊
Outdoor unit main PCB model
information error or
communication error
●(6) ●(3)
◊
Inverter error
●(6) ●(4)
◊
Active filter error, PFC circuit error
●(6) ●(5)
◊
Trip terminal L error
●(6) ●(10)
◊
Display PCB microcomputers
communication error
●(7) ●(1)
◊
Discharge temp. sensor error
●(7) ●(2)
◊
Compressor temp. sensor error
●(7) ●(3)
◊
Outdoor unit Heat Ex. liquid temp.
sensor error
●(7) ●(4)
◊
Outdoor temp. sensor error
●(7) ●(5)
◊
Suction Gas temp. sensor error
●(7) ●(6)
◊
• 2-way valve temp. sensor error
• 3-way valve temp. sensor error
●(7) ●(7)
◊
Heat sink temp. sensor error
●(8) ●(2)
◊
• Sub-cool Heat Ex. gas inlet
temp. sensor error
• Sub-cool Heat Ex. gas outlet
temp. sensor error
●(8) ●(3)
◊
Liquid pipe temp. sensor error
●(8) ●(4)
◊
Current sensor error
●(8) ●(6)
◊
• Discharge pressure sensor error
• Suction pressure sensor error
• High pressure switch error
●(9) ●(4)
◊
Trip detection
●(9) ●(5)
◊
Compressor rotor position
detection error
●(9) ●(7)
◊
Outdoor unit fan motor error
●(9) ●(9)
◊
4-way valve error
●(10) ●(1)
◊
Discharge temp. error
●(10) ●(3)
◊
Compressor temp. error
●(10) ●(4)
◊
High pressure error
●(10) ●(5)
◊
Low pressure error
●(13) ●(2)
◊
Branch boxes error
[Flexible Multi]
Display mode ●: 0.5s On / 0.5s Off
◊ : 0.1s On / 0.1s Off
( ) : Number of flashing
[Troubleshooting with the indoor unit display]
Operation indicator lamp (green)
Timer indicator lamp (orange)
Economy indicator lamp (green)
[Troubleshooting with the Wired Remote Controller Display (Option)]
If an error occurs, the following display will be shown. (“Er” will appear in the set room
temperature display.)
Error code
9387082050-02_IM.indb 129387082050-02_IM.indb 12 13/3/2018 PM 5:00:2613/3/2018 PM 5:00:26