Mitsubishi Heavy Industries SRK06CJ, SRK06CJ-3, SRK09CJ, SRK09CJ-3, SRK12CJ Technical Manual

RESIDENTIAL AIR-CONDITIONING

TECHNICAL MANUAL & PARTS LIST

WALL MOUNTED TYPE
RESIDENTIAL AIR-CONDITIONER
(Split system, air cooled cooling only type)

SRK06CJ, 09CJ, 12CJ
SRK06CJ-3, 09CJ-3, 12CJ-3
SRK10CJV-3, 13CJV-3
SRK10CJV-4, 13CJV-4
SRK19CK, 24CK
SRK19CK-3, 24CK-3
SRK19CKS-3, 25CKS-3
SRK19CKS-4, 25CKS-4

Manual No.'11•SRK-T-114

TECHNICAL MANUAL

1. SRK06CJ, 09CJ, 12CJ

SRK06CJ-3, 09CJ-3, 12CJ-3 ...................................... 2

2. SRK10CJV-3, 13CJV-3

SRK10CJV-4, 13CJV-4 ............................................... 31

3. SRK19CK, 24CK

SRK19CK-3, 24CK-3 .................................................. 63

4. SRK19CKS-3, 25CKS-3

SRK19CKS-4, 25CKS-4 ............................................. 97

( )

1. SRK06CJ, 09CJ, 12CJ
SRK06CJ-3, 09CJ-3, 12CJ-3

WALL MOUNTED TYPE
RESIDENTIAL AIR-CONDITIONER

Split system, air cooled
cooling only type

-

1

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'11 • SRK-T-114

CONTENTS

1.1 SPECIFICATIONS ........................................................................................ 3

(2) Outdoor units ....................................................................................... 7

(3) Wireless remote controller

................................................................... 8

............................................................................ 6

(1) Indoor units .......................................................................................... 6

1.2 EXTERIOR DIMENSIONS

1.3 ELECTRICAL WIRING ................................................................................. 9

(1) Indoor units .......................................................................................... 9

(2) Outdoor units ....................................................................................... 10

.......................................................... 12

1.5 RANGE OF USAGE & LIMITATIONS

1.4 PIPING SYSTEM ......................................................................................... 11

.................................................................................. 14

(6) Timer operation

.................................................................................. 23

....................................................... 22

(1) Operation control function by remote controller

(5) Flap control .......................................................................................... 23

(4) Custom cord switching procedure

......................................................................... 22(3) Auto restart function

(2) Unit ON/OFF button

........................................................................... 22

.................................. 21

........................................................... 24

............................................................... 24

................................................................... 25

..................... 27

(4) Troubleshooting procedure (If the air conditioner runs)

(3) Troubleshooting procedure

(If the air conditioner does not run at all)

........ 26

(1) Cautions

............................................................................................. 26

(2) Items to check before troubleshooting ................................................. 26

(5) Self-diagnosis table ............................................................................. 27

(6) Inspection procedures corresponding to detail of trouble .................... 28

1.6 APPLICATION DATA

1.7 OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER

(8) Outline of automatic operation

(7) Outline of cooling operation

(9) Protective control function

1.8 MAINTENANCE DATA

............... 21

................................................................................ 26

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2

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'11 • SRK-T-114

(9) How to make sure of wireless remote controller .................................. 30

(7)

Phenomenon observed after shortcircuit, wire breakage on sensor

......... 29

(8) Checking the indoor electrical equipment

........................................... 29

■How to read the model name

Example: SRK 06 C

Series code

Cooling only type

Product capacity

Model name SRK : Wall mounted type

SRC : Outdoor unit

J-3

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3

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1.1 SPECIFICATIONS

Model

Item

SRK06CJ (-3)

Indoor unit SRK06CJ (-3) Outdoor unit SRC06CJ (-3)

Cooling capacity (1)

W 1500

BTU/h 5000

Power supply 1 Phase, 220 / 230V, 50Hz

Operation
data (1)

Power
consumption

Cooling kW 0.385

Running
current

Cooling

A

1.8

Inrush current 8.5
COP Cooling 3.90
Noise level

Cooling Sound level dB(A) 37 48
Exterior dimensions (Height x Width x Depth) mm 268 x 790 x 213 540 x 645 (+62) x 245
Exterior appearance

(Munsell color)

Fine snow

(8.0Y 9.3/0.1) near equivalent

Stucco white

(4.2Y 7.5/1.1) near equivalent

Net weight kg 8.0 25

Refrigerant
equipment

Compressor type & Q'ty — RMC201A009 (Rotary type) x 1
Motor (Starting method) kW — 0.35 (Line starting)
Refrigerant oil 0.29 (SUNISO 4GSI or ATMOS NM56)
Refrigerant (3) kg R22 0.37 (Pre-Charged up to the piping length of 7.5m)
Heat exchanger Louver fins & inner grooved tubing Louver fins & inner grooved tubing
Refrigerant control Capillary tubes

Air handling
equipment

Fan type & Q'ty Tangential fan x 1 Propeller fan x 1
Motor W 16 22
Air flow Cooling CMM 7.8 24
Fresh air intake Not possible —
Air filter, Quality / Quantity Polypropylene net (washable) x 2 —

Shock & vibration absorber — Cushion rubber (for compressor)

Operation
control

Operation switch Wireless-Remote control —
Room temperature control Microcomputer thermostat —

Operation Display

RUN : Green, TIMER : Yellow, HI POWER : Green,

ECONO : Orange

Safety devices

Frost protection, Fan motor error protection,

Internal thermostat (For compressor)

Installation
data

Refrigerant piping size (O.D) mm Liquid line: φ6.35 (1/4") Gas line: φ9.52 (3/8")
connecting method Flare connecting

Attached length of piping m

Liquid line : 0.4

Gas line : 0.33

—

Insulation for piping Necessary (Both sides), independent
Refrigerant line (one way) length

m

Max. 15

Vertical height difference between
outdoor unit and indoor unit

Max.5 (Outdoor unit is higher)

Max.5 (Outdoor unit is lower)
Drain hose Connectable (VP 16) —
Power cable 2.5m (3 Cores wih Earth)
Recommended breaker size A 20

Connection wiring

Size x Core number 1.5mm2 x 3 cores (Including earth cable)
Connecting method Terminal block (Screw fixing type)

Accessories (included)

Mounting kit

Optional parts —

Note (1) The data are measured at the following conditions.

Item

Operation

Indoor air temperature Outdoor air temperature

Standards

DB WB DB WB

Cooling 27˚C 19˚C 35˚C 24˚C ISO-T1, JIS C 9612

(2) This air-conditioner is manufactured and tested in conformity with the ISO.
(3) The operation data are applied to the 220/230V districts respectively.
(4) The refrigerant quantity to be charged includes the refrigerant in 7.5m connecting piping.
(Purging is not required even for the short piping.)

The pipe length is 7.5m.

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4

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Model

Item

SRK09CJ (-3)

Indoor unit SRK09CJ (-3) Outdoor unit SRC09CJ (-3)

Cooling capacity (1)

W 2640

BTU/h 9000

Power supply 1 Phase, 220 / 230V, 50Hz

Operation
data (1)

Power
consumption

Cooling kW 0.88

Running
current

Cooling

A

4.1

Inrush current 18
COP Cooling 3.00
Noise level

Cooling Sound level dB(A) 41 49
Exterior dimensions (Height x Width x Depth) mm 268 x 790 x 213 540 x 645 (+62) x 245
Exterior appearance

(Munsell color)

Fine snow

(8.0Y 9.3/0.1) near equivalent

Stucco white

(4.2Y 7.5/1.1) near equivalent

Net weight kg 8.0 27

Refrigerant
equipment

Compressor type & Q'ty — RSA201A034 (Rotary type) x 1
Motor (Starting method) kW — 0.68 (Line starting)
Refrigerant oil 0.28 (SUNISO 4GSI or ATMOS NM56)
Refrigerant (3) kg R22 0.41 (Pre-Charged up to the piping length of 7.5m)
Heat exchanger Louver fins & inner grooved tubing Louver fins & inner grooved tubing
Refrigerant control Capillary tubes

Air handling
equipment

Fan type & Q'ty Tangential fan x 1 Propeller fan x 1
Motor W 16 22
Air flow Cooling CMM 9.0 24
Fresh air intake Not possible —
Air filter, Quality / Quantity Polypropylene net (washable) x 2 —

Shock & vibration absorber — Cushion rubber (for compressor)

Operation
control

Operation switch Wireless-Remote control —
Room temperature control Microcomputer thermostat —

Operation Display

RUN : Green, TIMER : Yellow, HI POWER : Green,

ECONO : Orange

Safety devices

Frost protection, Fan motor error protection,

Internal thermostat (For compressor)

Installation
data

Refrigerant piping size (O.D) mm Liquid line :φ6.35 (1/4") Gas line :φ9.52 (3/8")
connecting method Flare connecting

Attached length of piping m

Liquid line : 0.40
Gas line : 0.33

—

Insulation for piping Necessary (Both sides), independent
Refrigerant line (one way) length

m

Max. 15

Vertical height difference between
outdoor unit and indoor unit

Max.5 (Outdoor unit is higher)

Max.5 (Outdoor unit is lower)
Drain hose Connectable (VP 16) —
Power cable 2.5m (3 Cores wih Earth)
Recommended breaker size A 20

Connection wiring

Size x Core number 1.5mm2 x 3 cores (Including earth cable)

Connecting method Terminal block (Screw fixing type)
Accessories (included) Mounting kit
Optional parts —

Note (1) The data are measured at the following conditions.

Item

Operation

Indoor air temperature Outdoor air temperature

Standards

DB WB DB WB

Cooling 27˚C 19˚C 35˚C 24˚C ISO-T1 , JIS C 9612

(2) This air-conditioner is manufactured and tested in conformity with the ISO.
(3) The operation data are applied to the 220/230V districts respectively.
(4) The refrigerant quantity to be charged includes the refrigerant in 7.5m connecting piping.
(Purging is not required even for the short piping.)

The pipe length is 7.5m.

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5

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Model

Item

SRK12CJ (-3)

Indoor unit SRK12CJ (-3) Outdoor unit SRC12CJ (-3)

Cooling capacity (1)

W 3450

BTU/h 11800

Power supply 1 Phase, 220 / 230V, 50Hz

Operation
data (1)

Power
consumption

Cooling kW 1.125

Running
current

Cooling

A

5.3

Inrush current 29
COP Cooling 3.07
Noise level

Cooling Sound level dB(A) 42 49
Exterior dimensions (Height x Width x Depth) mm 268 x 790 x 213 540 x 780 (+62) x 290
Exterior appearance

(Munsell color)

Fine snow

(8.0Y 9.3/0.1) near equivalent

Stucco white

(4.2Y 7.5/1.1) near equivalent

Net weight kg 8.5 29

Refrigerant
equipment

Compressor type & Q'ty — RMC201A010 (Rotary type) x 1
Motor (Starting method) kW — 0.92 (Line starting)
Refrigerant oil 0.38 (SUNISO 4GSI or ATMOS NM56)
Refrigerant (3) kg R22 0.57 (Pre-Charged up to the piping length of 7.5m)
Heat exchanger Louver fins & inner grooved tubing Louver fins & inner grooved tubing
Refrigerant control Capillary tubes

Air handling
equipment

Fan type & Q'ty Tangential fan x 1 Propeller fan x 1
Motor W 16 22
Air flow Cooling CMM 10.0 32.0
Fresh air intake Not possible —
Air filter, Quality / Quantity Polypropylene net (washable) x 2 —

Shock & vibration absorber — Cushion rubber (for compressor)

Operation
control

Operation switch Wireless-Remote control —
Room temperature control Microcomputer thermostat —

Operation Display

RUN : Green, TIMER : Yellow, HI POWER : Green,

ECONO : Orange

Safety devices

Frost protection, Fan motor error protection,

Internal thermostat (For compressor)

Installation
data

Refrigerant piping size (O.D) mm Liquid line :φ6.35 (1/4") Gas line :φ12.7 (1/2")
connecting method Flare connecting

Attached length of piping m

Liquid line : 0.4

Gas line : 0.33

—

Insulation for piping Necessary (Both sides), independent
Refrigerant line (one way) length

m

Max. 15

Vertical height difference between
outdoor unit and indoor unit

Max. 5 (Outdoor unit is higher)

Max. 5 (Outdoor unit is lower)
Drain hose Connectable (VP 16) —
Power cable 2.5m (3 Cores wih Earth)
Recommended breaker size A 20

Connection wiring

Size x Core number 1.5mm2 x 3 cores (Including earth cable)

Connecting method Terminal block (Screw fixing type)
Accessories (included) Mounting kit
Optional parts —

Note (1) The data are measured at the following conditions.

Item

Operation

Indoor air temperature Outdoor air temperature

Standards

DB WB DB WB

Cooling 27˚C 19˚C 35˚C 24˚C ISO-T1 , JIS C 9612

(2) This air-conditioner is manufactured and tested in conformity with the ISO.
(3) The operation data are applied to the 220/230V districts respectively.
(4) The refrigerant quantity to be charged includes the refrigerant in 7.5m connecting piping.
(Purging is not required even for the short piping.)

The pipe length is 7.5m.

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6

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1.2 EXTERIOR DIMENSIONS

(1) Indoor units

Models SRK06CJ(-3), 09CJ(-3), 12CJ(-3)

1.2.2 Range of usage & limitations

1.2.3 Exterior dimensions

Indoor return air temperature
(Upper, lower limits)

m51 .xaMhtgnel )yaw eno( enil tnaregirfeR

All models

Refer to the selection chart

Power source voltage

Rating± 10%

Voltage at starting

Min. 85% of rating

Frequency of ON-OFF cycle

Max. 10 times/h

ON and OFF interval

Max. 3 minutes

Outdoor air temperature
(Upper, lower limits)

Vertical height difference between
outdoor unit and indoor unit

Max. 5m (Outdoor unit is higher)
Max. 5m (Outdoor unit is lower)

Item

Models

(1) Indoor unit

Models SRK06CJ, 09CJ, 12CJ

Unit: mm

Piping hole (ø65)

( )

Piping hole (ø65)

53.5

06, 09 :ø9.52
12 :ø12.7

Piping for Gas

53.5

44.5

7.5

44.5

43.2

39.3

202450138

133.5450206.5

102.5

585

102.5

252.2

8.3

200

380.6

Piping for Liquid 448.6 (ø6.35)

Drain hose 520 (ø16)

45

45

60

17.5

60

27

788

VIEW A

268

790

A

→

Terminal block

Piping hole right (left)

9

213 3

45

60

-

7

-

192.5

372.5

82.5
480

82.5

61.5

2-ø12

Terminal
block

127.7

33.3

40˚

40˚

645

Drain holes

Service valve (Gas)
Flare connecting ø9.52 (3/8˝)

Service valve (Liquid)
Flare connecting ø6.35 (1/4˝)

50

12

42

13.5

274.5

300

12

23

44

245

540

100.3 39.7

14.4

(2) Outdoor unit

Model SRC06CJ(-3), 09CJ(-3)

Model SRC12CJ (-3)

Unit: mm

63.4

390.6

390.6

69.4

111.6 510 158.4

780 61.9

17.9

14.8 312.5 24.3

351.6

50.6

12

290

Anchor bolt hole

Drain discharge holes

Service valve (Gas)
Flare connection

ø12.7 (1/2")

15.8

540

97.7

42.5

40

˚

40˚

138.4 33.5

Terminal block

Service valve (Liquid)

Flare connection
ø6.35(1/4")

Unit: mm

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8

-

(3) Wireless remote controller

Unit: mm

60

17.3

150

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9

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1.3 ELECTRICAL WIRING

(1) Indoor units

Models SRK06CJ(-3), 09CJ(-3), 12CJ(-3)

U

MFM

BK

Color symbol

BL
BR
LB
YE

RD

YG

WH

Red

Yellow／Green

White

Black

Blue

Brown

Light blue

Yellow

Symbol

Meaning of Marks

Parts name Symbol Parts name

Capacitor forCF

I

FM

I

FM
ZNR

FM

I

Fuse
Fan motor
Flap motor
Varistor

Th2
T

Room temp. thermistor
Heat exchanger thermistor
Terminal block

F

Th1

Power source
220／230／240V 50Hz

YG

LB

BR

Printed circuit board

T

YG

BL

BR

WH

BK

TO
OUTDOOR
UNIT

Th1

Th2

Wireless
R-Amp

Display

CNE

CNG

YE
WH
RD

M

CNW

IC15

ZNR

1
5
3

CNU

CF

I

52C-4 52C-3

52C

F
250V 3.15A

CONTROL BOX

1

2

Back up Sw

CNM

N

t°

1～

FM

I

t°

-

10

-

(2) Outdoor units

Models SRC06CJ(-3), 09CJ(-3), 12CJ(-3)

Symbol

Meaning of Marks

Parts name
Capacitor for CMCc
Capacitor for FMoCFo
Compressor motorCM
Fan motorFMo
Motor protector for CM51C
Terminal blockT
ConnectorSh

1

Power source
220-240V 50Hz

INDOOR
UNIT

FMo

BLACK
ORANGE

WHITE

RED

WHITE

Cc

ORANGE

CFo

WHITE

ORANGE

WHITE

WHITE

BLACK

BLACK

WHITE

1 2

T

WHITE

CM

BLACK

BLACK

51C

2

3

1

RED

C

S

R

Sh

1

T

WHITE

1 2

CAPACITOR

-

11

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1.4 PIPING SYSTEM

Model SRK06CJ-3, 09CJ-3

Model SRK12CJ-3

Outdoor unitIndoor unit

Room temp.

sensor

Heat
exchanger

Flare connecting

Heat
exchanger
sensor

Piping
(Liquid)
ø6.35

Check joint

Service valve (Liquid)

Flare connecting

Cooling cycle

Heat
exchanger

Compressor

Accumulator

Service valve
(Gas)

Capillary tube

Piping
(Gas)
ø9.52

Outdoor unitIndoor unit

Room temp.
sensor

Heat
exchanger

Flare connecting

Heat
exchanger
sensor

Piping
(Liquid)
ø6.35

Check joint

Service valve (Liquid)

Flare connecting

Cooling cycle

Heat
exchanger

Compressor

Capillary tube

Accumulator

Service valve
(Gas)

Capillary tube

Piping
(Gas)
ø12.7

1.4 PIPING SYSTEM

Models SRK06CJ(-3), 09CJ(-3)

Model SRK12CJ (-3)

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12

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1.5 RANGE OF USAGE & LIMITATIONS

Net capacity = Capacity shown on specification Correction factors as follows.

(1) Coefficient of cooling capacity in relation to temperatures

All models

Models

Item

Indoor return air temperature
(

Upper, lower limits

)

Outdoor air temperature
(

Upper, lower limits

)

Refer to the selection chart

Refrigerant line (one way) length

Max. 15m

Max. 5m (Outdoor unit is higher

)

Max. 5m (Outdoor unit is lower

)

Min. 3 minutes

Max. 10 times/h

Min. 85% of rating

Vertical height difference between
outdoor unit and indoor unit

Power source voltage

Voltage at starting

Frequency of ON−OFF cycle

ON and OFF interval

Rating 10%

14 16 18 20 22

15

20

25

30

35

40

0.6

0.7

0.8

0.9

1.0

1.1

1.2

1.3

43

24

ISO-T1 Standard ConditionIndoor air W.B. temperature °C W.B.

Cooling

Applicable range

Coefficient of cooling

capacity in relation

to temperature

Cooling operation

Outdoor air D.B.

temperature

°C D.B.

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13

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(2) Correction of cooling capacity in relation to one way length of refrigerant piping

How to obtain the cooling capacity

Piping length [m]

Cooling

7

1.0

10

0.99

15

0.975

SRK12CJ (-3)

SRK12CJ (-3)

(11500 BTU/h)

Length 15m

Factor by air
temperatures

(11800 BTU/h)

3450W 0.975

1.0 3364 W

=

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14

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1.6 APPLICATION DATA

Safety precautions

• Please read these “Safety Precautions” first then accurately execute the installation work.

• Though the precautionary points indicated herein are divided under two headings,

WARNING and CAUTION , those points which ar e

related to the strong possibility of an installation done in error resulting in death or serious injury are listed in the

WARNING section.

However, there is also a possibility of serious consequences in relationship to the points listed in the

CAUTION section as well. In either case,

important safety related information is indicated, so by all means, properly observe all that is mentioned.

• After completing the installation, along with confirming that no abnormalities were seen from the operation tests, please explain operating
methods as well as maintenance methods to the user (customer) of this equipment, based on the owner’s manual.

Moreover, ask the customer to keep this sheet together with the owner’s manual.

WARNING

• To disconnect the appliance from the mains supply this appliance must be connected to the mains by means of a circuit breaker or a switch
(use a recognized 20A) with a contact separation of at least 3mm.

• The appliance shall be installed in accordance with national wiring regulations.

• This system should be applied to places as households, residences and the like. Application to inferior environment such as engineering

shop could cause equipment malfunction.

• Please entrust installation to either the company which sold you the equipment or to a professional contractor. Defects from improper
installations can be the cause of water leakage, electric shocks and fires.

• Execute the installation accurately, based on following the installation manual. Again, improper installations can result in water leakage,
electric shocks and fires.

• For installation, confirm that the installation site can sufficiently support heavy weight. When strength is insufficient, injury can result from
a falling of the unit.

• For electrical work, please see that a licensed electrician executes the work while following the safety standards related to electrical
equipment, and local regulations as well as the installation instructions, and that only exclusive use circuits are used.
Insufficient power source circuit capacity and defective installment execution can be the cause of electric shocks and fires.

• This equipment must be installed with earth leakage circuit breaker (ELCB). Otherwise, it may cause electrical shock and fire

in case of

equipment breakdown.

• Accurately connect wiring using the proper cable, and insure that the external force of the cable is not conducted to the terminal connection
part, through properly securing it improper connection or securing can result in heat generation or fire.

• Take care that wiring does not rise upward, and accurately install the lid/service panel.It’s improper installation can also result heat genera­tion or fire.

• When setting up or moving the location of the air conditioner, do not mix air etc. or anything other than the designated refrigerant (R22)
within the refrigeration cycle.
Rupture and injury caused by abnormal high pressure can result from such mixing.

• Always use accessory parts and authorized parts for installation construction. Using parts not authorized by this company can result in
water leakage, electric shock, fire and refrigerant leakage.

• Ventilate the work area when refrigerant leaks during the operation.
Coming in contact with fire, refrigerant could generate toxic gas.

• Confirm after the foundation construction work that refrigerant does not leak.
If coming in contact with fire of a fan heater, a stove or movable cooking stove, etc., refrigerant leaking in the room could generate toxic gas.

CAUTION

• Execute proper grounding. Do not connect the ground wire to a gas pipe, water pipe, lightning rod or a telephone ground wire.
Improper placement of ground wires can result in electric shock.

• The installation of an earth leakage breaker is necessary depending on the established location of the unit.
No installing an earth leakage breaker may result in electric shock.

• Do not install the unit where there is a concern about leakage of combustible gas.
The rare even of leaked gas collecting around the unit could result in an outbreak of fire.

• For the drain pipe, follow the installation manual to insure that it allows proper drainage and thermally insulate it to prevent condensation.
Inadequate plumbing can result in water leakage and water damage to interior items.

• Install the outdoor unit so that the aluminum fins on the air heat exchanger cannot be touched. Failure to observe this may result in injury.

• Do not place objects near the outdoor unit or allow leaves to gather around the unit. If there are objects or leaves around the outdoor unit,

small animals may enter unit and contact electrical parts resulting in break down, emission of smoke or flame.

Cautions for installation

① The system should be applied to places as households, residences and the like.
② The equipment shall be installed in accordance with national wiring regulations.
③ The connection to the fixed wiring of the mains supply must be made via a double pole isolating switch with a contact gap of at

least 3mm in each pole.

④ When the outdoor unit has a possibility of being overturned or being displaced and fall from its original installation position, the

outdoor unit should be fixed in its position by use of anchor bolts or wires.

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15

-

Necessary tools for the installation work

1 Plus headed driver (Phillips screwdriver)

2 Knife

3 Saw

4 Tape measure

5 Hammer

6 Spanner wrench

7 Torque wrench

8 Hole core drill (65mm in diameter)

9 Wrench key (Hexagon)

[4m/m]

10 Vacuum pump

11

Vacuum pump adapter
(Anti-reverse flow type)

12 Gauge manifold

13 Change hose

14 Flaring tool set

15 Gas leak detector

( )

Standard accessories

(Installation kit) Q'ty

Accessories for indoor unit

①

Installation board

1

(Attached to the rear of the indoor unit)

② Wireless remote control 1

③ Remote contorol holder 1

④

Tapping screws

4

(for installation board 4dia. by 25mm )

⑤

Wood screw

2

(for remote contorol switch holder 3.5dia. by 16mm)

⑥

Baterry [R03 (AAA, Micro) 1.5V]

2

Option parts Q'ty

ⓐ 1etalp gnilaeS

ⓑ 1eveelS

ⓒ 1etalp noitanilcnI

ⓓ 1yttuP

ⓔ Drain hose (extention hose) 1

ⓕ

Piping cover (for insulation of

1

connection piping)

① A place where good air circulation can be obtained and where rain,

snow or sunshine will not directly strike the unit.

② A place where discharged hot air or unit’s operating sound will not

be a nuisance to the neighborhood.

③ A place where servicing space can be secured.
④ A place where vibration will not be enlarged.

*Avoid installing in the following places.

•A place near the bedroom and the like, so that the operation

noise will cause no trouble.

•

A place where there is possibility of flammable gas leakage.

•A place exposed to strong wind.

⑤ Blowing out port and suction port on the back side of the unit can

be installed at a distance of 10cm from walls.

In case the barrier is 1.2m or above in height, or is overhead, the
sufficient space between the unit and wall shall be secured.

⑥ When the unit is installed, the space of the following dimension

and above shall be secured.

OUTDOOR UNIT

Note (1) If the wall is higher than 1.2 m or a ceiling is

present, distances larger than indicated in the
above table must be provided.

Selection of installation location

① Where there is no obstructions to the air flow and where the

cooled air can be evenly distributed.

② A solid place where the unit or the wall will not vibrate.
③ A place where there will be enough space for servicing. (Wher e

space mentioned right can be secured)

④ Where wiring and the piping work will be easy to conduct.
⑤ The place where receiving part is not exposed to the direct rays

of the sun or the strong rays of the street lighting.

⑥ A place where it can be easily drained.
⑦ A place separated at least 1m away from the television or the

radio.
(To prevent interfence to images and sounds.)

INDOOR UNIT

6.5 cm

5 cm

10 cm

Left
side

14.0 ~ 61 .0N · m
(1.4 ~ 6. 1kgf · m)

( )

Designed specifical ly

for R22

( )

Designed specifica lly

for R22

( )

Designed specifica lly

for R22

( )

Designed specifica lly

for R22

( )

Designed specifica lly

for R22

60 cm MIN

Air intake

10 cm MIN

10 cm
MIN

Air outlet

Air
intake

No obstacles
(Service space
for electrical
parts)

Right
side

)(

-

16

-

Installation of indoor unit

Installation of installation board

• Adjustment of the installation board in the horizontal
direction is to be conducted with four screws in a
temporary tightened state.

• Adjust so that board will be level by turning the board
with the standard hole as the center.

Standard hole

Look for the inside wall structures (Intersediate support or
pillar and firaly install the unit after level surface has been
checked.)

Mating mark for level surface

450

INSTALLATION SPACE (INDOOR UNIT) (FRONT VIEW)

Unit : mm

Piping hole( 65) Piping hole( 65)

Installation board

Indoor unit

53.5

Piping for Gas 380.6

Piping for Liquid 448.6

Drain hose 520( 16)

53.5

Space *

for service

Space

for service

44.5

252.2

7.5

8.3

Space for

service

50

Space for
service
100

102.5

585

102.5

133.5

450206.5

202450138

44.5

43.2

39.3

200

65

15

Limitations for one way piping length and vertical height difference

One way piping length ( ) 15 m

Outdoor

unit is lower

5 m

Outdoor unit

is higher

5 m

Vertical height

difference (h)

h

Drilling of holes and fixture sleeve (Option parts)

(Insertin g sleeve)

Note (1) Drill a hole with incline of 5 degree from

indoor si de to outd oor side.

Indoor side Outdoor side

Cut off the sle eve
col lar in cas e of
dr aw in g p ipin g
out to rear.

Cut off the sle eve
collar that can be
seen from ben eath
the unit.

Wall thic kness

+ 1.5 cm

Indoor side Outdoor side

Turn t o
tighten

Paste

View of sleeve when installed

In cl ined
flange

Seal ing
plate

Sleeve

Indoor side Outdoor side

(*Sleeve + *Inclined + *Sealing plate)

Drill a hole with 65 whole core drill Adjusting sleeve length

Install the sleeve

*Leave e xtra space on the r ight side to enable removal o f the lid screw.

-

17

-

Preparation of indoor unit

Pipe

Drain hose

[Procedure for exchanging the drain hose.]

1. Remove the drain hose. 2. Remove the drain cap. 3. Insert the drain cap. 4. Connect the drain hose.

① Mounting of connecting wires

ⓐ Remove the lid.
ⓑ Remove the wiring clamp.
ⓒ Connect the connecting wire securely to the terminal block.

Use cable for interconnection wiring to avoid loosening of the
wires.
CENELEC code for cables Required field cables.

H05RNR3G1.5 (Example) or 245IEC57

H Harmonized cable type
05 300/500 volts

R Natural-and/or synth. rubber wire insulation

N Polychloroprene rubber conductors insulation

R Standed core

4or5 Number of conductors

G One conductor of the cables is the earth conductor (yel-

low/green)

1.5 Section of copper wire (mm

2

)

• Connect the connection wire securely to the terminal block.
If the wire is not affixed completely, contact will be poor,
and it is dangerous as the terminal block may heat up and
catch fire.

• Take care not to confuse the terminal numbers for indoor
and outdoor connections.

• Earth lead wire shall be longer than the other lead wires for
the electrical safety in case of the slipping out of the cord
from the anchorage.

• The earth line of power cord must be properly earthed.

• Affix the connection wire using the wiring clamp.

ⓓ Fix the connecting wire by wiring clamp.
ⓔ Attach the lid.
ⓕ Close the air inlet panel.

For power supply, indoor unit

For power supply, outdoor unit

1 Brown

2 Blue

② Shaping the pipe

③ Taping of the exterior

• Hold the bot tom of the pip e and change its directio n before
stretchin g it and s haping it.

• Tape only the portio n that run s through the wall.
Always ta pe the cro ssover wir es with th e pipe.

④ Cautions when piping from the left and the rear center of the unit

[ Top View ]

• Loo sen a nd re mov e the
spring-t ype clamp.

• Remove with your hand or
a pair of pliers.

•

Use a hexag onal wrench to
correctl y ins ert t he dr ain c ap
which wa s removed in 2.
Cautio n: Be c areful because
if the cap is not inserte d prop­erty, wa ter leak m ay occur.

•

Loosen the spri ng-type clamp
and securely insert the dra in
hose.
Cautio n: Be c areful becaus e
if the cap is not inserte d prop­erly, wa ter leak m ay occur.

gnipiP ediS thgiRgnipiP ediS tfeL

Right rear pipingLeft rear piping

gnipip edis thgiRgnipip edis tfeL

Lid

Screw *

Clamp

Terminal block

[ Procedure for exchanging the drain hose ]

Left downward

Right

Rear

Downward

Left rear

Left

Piping is possi ble in the rear, left,
left rear, left downw ard, right or
downward direction.

• Do not pla ce the po wer supply cords ab ove the gu tter, bec ause the
air conditioner is str uctured in a way where condensation on t he
back side is collec ted in to the drain pan before drainage.

• Do not make traps in the drain hose line .

* Leave space t o a llow

removal of this scre w
after in stallation .

Terminals on the indoor unit
Colour of wires

Terminals on the outdoor unit

112

2

Wall

Gutter

Pipes storage area

Declining slope

Inverted slipe

Trap

-

18

-

Installing steps

1.Hook the upper part
of the indoor unit to
the installation board.

2.The unit can be installed
simply by gently push­ing in the lower part.

⑤ Securing the indoor unit to the installation board

Wall

Indoor un it
base lowe r latch

Installa tion
board

Latch ( 2 locati ons)

Installa tion
board

Indoor un it

•

How to remove the indoor unit from the installation board

① Push up at the marked portion of the indoor unit

base lower latch, and slightly pull it toward you.
(both right and left hand sides)
(The indoor unit base lower latch can be removed
from the installation board)

② Push up the indoor unit upward. So the indoor unit

will be removed from the installation board.

The marked portion of the
Indoor unit bese lower latch

Lid

Removal and installation of the front panel

Open/close and detachment/attachment of air inlet panel

Set scre ws

① Removing

• Remove the 2 set screws.

• Move the lower part of the panel forward and push upwards to

remove. (Remove the 3 latches in the upper section.)

② Fitting

• Do remove the air filter.

• Cover the body with the front panel.

• Push the circled portion at the front.

• Tighten the 2 set screws.

• Fit the air filter. Carry out in the above order.

① To open, pull the panel at both ends of lower part and release

latches, then pull up the panel until you feel resistance. (The
air inlet panel stops at approx. 60˚ open position.)

② To close, hold the panel at both ends of lower part to lower

downward and push it slightly until the latch works, then
push the center portion slightly.

③ To remove, pull up the panel to the position shown in right

illustration and pull it toward you.

④ To install, insert the air inlet panel arm into the slot on the

front panel from the position shown in right illustration, hold
the panel at both ends of lower part, lower it downward
slowly, then push it slightly until the latch works and further
push the center portion slightly.

-

19

-

1 2

Installation of outdoor unit

① Make sure that the unit is stable in installation. Fix the

unit to stable base.

② Perfrom wiring, making wire terminal numbers conform

to terminal numbers of indoor unit terminal block.

③ Earth lead wire shall be longer than the other lead wires

for the electrical safety in case of the slipping out of the

cord from the anchorage.

Terminal block

Intercon necting wire

Connection of refrigerant pipings

Preparation

Connection of refrigerant piping

Air purge

Keep the openings of the pipes covered with tapes etc. to prevent dust, sand, etc. from entering them.

• Specified torquing value:
Liquid side (ø6.35) : 14~18N·m (1.4~1.8kgf·m)
Gas side (ø9.52) : 34~42N·m (3.4~4.2kgf·m)
Gas side (ø12.7) : 49~61N·m (4.9~6.1kgf·m)

• Use one more spanner to fix the valve.

① Tighten all flare nuts in the pipings both indoor and

outside wall so as not to cause leak.

② Connect service valve, charge hose, manifold valve

and vacuum pump as is illustrated below.

③ Open manifold valve handle Lo to its full width, and

perform vacuum or evacuation.
Continue the vacuum or evacuation operation for 15
minutes or more and check to see that the vacuum
gauge reads – 0.1 MPa (– 76 cmHg).

④ After completing vacuum operation, fully open serv-

ice valve (Both gas and liquid sides) with hexagon
headed wrench.

⑤ Detach the charge hoses.
⑥ Check for possible leakage of gas in the connection

parts of both indoor and outdoor.

¡ R emove the flared nu ts.

(on both liquid and gas sides )

¡ Remove the flared nut s.

(on both l iquid and ga s sides)

¡ Install t he remo ved flar ed nuts to the pipe s to b e con-

nected, t hen flare the pipes.

Dimension A
Liquid si de
(ø6.35): 9.0 dia
Gas side
(ø9.52): 13. 0 dia
(ø12.7): 16.2 dia

Press

Remove

Remove

(D o no t
turn)

Spanner

for fixin g
the pipin g)

Torque
wrench

• Specified torquing value:
Liquid side (ø6.35) : 14~18N·m (1.4~1.8kgf·m)
Gas side (ø9.52) : 34~42N·m (3.4~4.2kgf·m)
Gas side (ø12.7) : 49~61N·m (4.9~6.1kgf·m)

① Indoor unit side

② Outdoor unit side

① Indoor unit side ② Outdoor unit side

• Connect firmly gas and liquid side
pipings by Torque wrench.

• Connect firmly gas and liquid side
pipings by Torque wrench.

• Always use a Torque wrench and back up spanner to tighten the flare nut.

Ma ni fo ld
Valve

-76 cm H g

Handle Lo
(pressur e)

Charge h ose

Stop valv e
(Two-way valve)

Service p ort

Stop valu e
(Three- way

value)

Compound
(Gauge)

Pressure
gauge

Handle H i

(pressure)

Charge h ose

Vacuum pu mp

Terminals on the indoor unit
Colour of wires

Terminals on the outdoor unit1122

For power supply, indoor unit

For power supply, outdoor unit

1 Brown

2 Blue

-

20

-

When refrigerant piping exceeds 7.5m conduct additional refrigerant charge after refrigerant sweeping.

7.5m over 15m:Additional charge amount per meter = 10g/m

[Example]

How much amount of additional charge for 15m piping?

(15 – 7.5)m × 10g/m=75g 75g for additional charge

Installation of remote control switch

Insulation of connecting portion

Mounting method of battery

Earthing work

① Cover the connection portion of the refrigerant piping with the

pipe cover and seal them.

If neglecting to do so, moisture occurs on the piping and water
will drip out.

② Finishing and fixing

ⓐ Tie up the piping with wrapping tape, and shape it so that it conforms

to which the pipe is attached.

ⓑ Fix them with clamps as right figure.

Vinyl tap e

To cov er the connecting po rtion w ith ins ula­tion materia ls, cut upper porti on and then seal
it with i nsulation materials.

Cover the exter ior portion with cov­ering tape a nd shape the pi ping so it
will matc h the cont ours of th e route
that t he pipi ng to take. Also fix the
wiring and pipings to the wal l with
clamps.

Insulatio n

Refrigera nt piping
Electrica l wiring
Covering tape
Drain hos e

Tapping s crew

-

-

-

+

+

+

• Uncover the remote control switch, and mount the bat­teries [R03(AAA, Micro)× 2 pieces] in the body regu­larly.

(Fit the poles with the indication marks, & without
fail)

• Earth work shall be carried out without fail in order to prevent electric shock and noise generation.

• The connection of the earth cable to the following substances causes dangerous failures, therefore it shall never be done.
City water pipe, Town gas pipe, TV antenna, lightning conductor, telephone line, etc.

Trial run and operation

① Conduct trial run after confirming that there is no gas leaks.
② When conducting trial run set the remote control thermostat to continuous operation position. However when the power source

is cut off or when the unit’s operation switch is turned off or was turned to fan operation position, the unit will not go int o
operation in order to protect the compressor.

③ Explain to the customer on the correct usage of the air-conditioner in simple layman’s terms.
④ Make sure that drain flows properly.

Battery

Cover

Fixing to pillar or wall

• Conventionally, operate the wireless remote control
by holding in your hand.

• Avoid installing it on a clay wall etc.

Screws

♦ Additional refrigerant charge

-

21

-

Remote controller

1.7

OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER

(1) Operation control function by remote controller

S

Operation section

Unit display section

FAN SPEED button

Each time the button is pushed, the
indicator is switche d over in t urn.

•

The above illustrati on shows al l controls, but in pr actice
only the relevant pa rts are sho wn.

OPERATION MODE select button

Each time the button pushed, th e
indicator is switche d over in t urn.

ON/OFF (luminous) button

Press for starting o peration, p ress again
for stopp ing.

HI POWER/ECONO button

This butt on ch anges th e HIG H POWER/
ECONOMY m ode.

AIR FLOW (UP/DOWN) button

This butt on changes the air flo w (up/down) mode.

SLEEP button

This butt on selects SLEEP opera tion.

CLEAN switch

This swit ch changes the CLEAN m ode.

ON TIMER button

This butt on selects ON TIMER op eration.

Thi s b utto n can cel s th e ON TIM ER, OFF
TIMER, an d SLEEP ope ration.

CANCEL button

RESET switch

Switch fo r resetting microcompu ter and
setting t ime.

OFF TIMER button

This butt on selects OFF TIMER o peration.

TEMPERATURE button

This butt on sets the room tempe rature.
(This but ton changes the presen t time and
TIMER tim e.)

RUN light (green)

Illuminat es during o peration
and ‘CLEA N operation ’.

TIMER light (yellow)

Illuminat es during T IMER opera tion.

HI POWER light (green)

Illuminat es during H IGH POWER operation.

ECONO light (orange)

Illuminat es during E CONOMY ope ration.

-

22

-

(4) Custom cord switching procedure

If two wireless remote controller are installed in one room, in order to prevent wrong operation

due to mixed signals, please modify the printed circuit board in the indoor unit’s control box

and the remote controller using the following procedure. Be sure to modify both boards. If

only one board is modied, receiving (and operation) cannot be done.

(a) Modifying the indoor unit’s printed circuit board

Take out the printed circuit board from the control box and cut off jumper wire (J6)

using wire cutters.

After cutting of the jumper wire, take measures to prevent contact with the other the lead

wires, etc.

(2) Unit ON/OFF button

When the remote controller batteries become weak, or if the remote controller is lost or malfunctioning, this button may be used to

turn the unit on and off.

(a) Operation

Push the button once to place the unit in the automatic mode. Push it once more to turn the unit off.

(b) Details of operation

The unit will go into the automatic mode in which it automatically determines, from room temperature (as detected by sensor),

whether to go into the cooling or thermal dry modes.

(3) Auto restart function

(a) Auto restart function records the operational status of the air-conditioner immediately prior to be switched off by a power cut,

and then automatically resumes operations after the power has been restored.

(b) The following settings will be cancelled:

1) Timer settings

2) HIGH POWER operations

Notes (1) Auto restart function is set at on when the air-conditioner is shipped from the factory. Consult

with your dealer if this function needs to be switched off.

(2) When power failure ocurrs, the timer setting is cancelled. Once power is resumed, reset the timer.

(3)

If the jumper wire (J7) “AUTO RESTART” is cut, auto restart is disabled. (See the diagram at right)

(b) Modifying the wireless remote controller

1) Remove the battery.

2) Cut the jumper wire shown in the gure at right.

Cut

Function

Operation mode

Room temperature

setting

Fan speed

Flap

Timer switch

Cooling

About 23ºC

Auto Auto Continuous

Thermal dry

About 24ºC

Unit ON/OFF button

In emergen cies, this button c an be used for turni ng on/off the unit when
remote con trol is not availab le.

Page 15

RUN light (green)

Illuminate s during operation
and CLEAN operation.

TIMER light (yellow)

Illuminate s during TIMER oper ation.

Unit ON/OFF button

Jumper wire (J7)

Jumper wire (J6)

-

23

-

'09•SRK-DB-087D

(5)ޓFlap control



(a) Flap



(b) Swing

1)

(c) Memory flap (Flap stopped)

(d) When not operating

COOL , DRY, FAN

Remote controller
display

Approx. 10° Approx. 20° Approx. 30°

(Swing)

(Flap stopped)

Approx. 45° Approx. 60°



Angle of Flap from Horizontal

In COOL, DRY, FAN operation

Approx.

10°

Approx. 60°

(b) Sleep timer operation

(6)ޓTimer operation

(a) Comfortable timer setting (ON timer)

(c) OFF timer operation

-

24

-

27.5

25.5

19.5

18

30

(7) Outline of cooling operation

(a) Operation of major functional components in Cooling mode

(b) Fan speed switching

ON OFF OFF

ON

OFF

(few minutes ON)

OFF

(few minutes ON)

ON ON ON

Thermostat ON Thermostat OFF Failure

Cooling

Compressor

Indoor fan motor

Outdoor fan motor

Auto fan control

Speed 5

Speed 3

Speed 2

Model

Fan speed

All models

Auto

MED

HI

LO

(8) Outline of automatic operation

(a) Determination of operation mode

The unit checks the indoor air temperature and the outdoor air temperature, determines the operation mode, and then begins in

the automatic operation.

Dehumidifying

Cooling

Indoor air temperature (˚C)

Outdoor air temperature (˚C)

(b)

The unit checks the temperature every 30 minutes after the start of operation and, if the result of check is not same as the previ

-

ous operation mode, changes the operation mode.

(c)

When the unit is started again within one hour after the stop of automatic operation or when the automatic operation is selected

during cooling or dehumidifying operation, the unit is operated in the previous operation mode.

(d)

Setting temperature can be adjusted within the following range. There is the relationship as shown below between the signals of

the wireless remote controller and the setting temperature.

Signals of wireless remote controller (Display)

–6 –5 –4 –3 –2 –1

±

0 +1 +2 +3 +4 +5 +6

Setting

Cooling

17 18 19 20 21 22 23 24 25 26 27 28 29

temperature

Dehumidifying

18 19 20 21 22 23 24 25 26 27 28 29 30

-

25

-

(9) Protective control function

(a) Frost prevention for indoor heat exchanger (During cooling or dehumidifying)

1) Operating conditions

a) Indoor heat exchanger temperature (Th2) is lower than 2.5ºC.

b) 3 minutes elapsed after the start of operation.

2) Detail of frost prevention operation

Compressor OFF

Indoor fan Protects the fan tap just before frost prevention control.

Outdoor fan Depending on the stop mode

3) Reset condition: Indoor heat exchanger temperature (Th2) is higher than 8ºC.

(b) Indoor fan motor protection

When the airconditioner is operating and the indoor fan motor is turned ON, if the indoor fan motor has operated at 300 rpm or

under for more than 30 seconds, the unit enters first in the stop mode and then stops the entire system.

TIMER light illuminates simultaneously and the RUN light flashing 6 times at each 8-second.

(c) 3 minutes forced operation

When the compressor begins operating the thermal operation is not effective for 3 minutes, so operation continues as is in the

operation mode. (After 3 minutes has passed the thermal operation is effective.)

However, stopping the compressor via a stop signal or protection control has priority.

(d) Abnormality of outdoor unit

When the indoor heat exchanger temperature does not fall to 25°C or below for 40 minutes after 5 minutes have elapsed since

the compressor operation start, the abnormality stop occurs. (RUN light : ON, TIMER light : 2 time flash)

(e) Sensor disconnection (room temperature, indoor heat exchanger

)

1) Room temperature sensor

If the temperature detected by the room temperature sensor is – 20ºC or lower continuously for 15 seconds or longer while

operation is stopped, an error indication is displayed. (RUN light: 2 time flash, TIMER light: ON)

2) Indoor heat exchanger temperature sensor

If the temperature detected by the indoor heat exchanger temperature sensor is –20ºC or lower continuously for 15 seconds

or longer while operation is stopped, an error indication is displayed.

(RUN light : 1 time flash, TIMER light : ON)

-

26

-

1.8 MAINTENANCE DATA

(1) Cautions

(a) If you are disassembling and checking an air conditioner, be sure to turn off the power before beginning. When working on

indoor units, let the unit sit for about 1 minute after turning off the power before you begin work. When working on an outdoor

unit, there may be an electrical charge applied to the main circuit (electrolytic condenser), so begin work only after discharg-

ing this electrical charge (to DC 10 V or lower).

(b) When taking out printed circuit boards, be sure to do so without exerting force on the circuit boards or package components.

(c) When disconnecting and connecting connectors, take hold of the connector housing and do not pull on the lead wires.

(2) Items to check before troubleshooting

(a) Have you thoroughly investigated the details of the trouble which the customer is complaining about?

(b) Is the air conditioner running? Is it displaying any self-diagnosis information?

(c) Is a power supply with the correct voltage connected?

(d) Are the control lines connecting the indoor and outdoor units wired correctly and connected securely?

(e) Is the outdoor unit’s service valve open?

(3) Troubleshooting procedure (If the air conditioner does not run at all)

If the air conditioner does not run at all, diagnose the trouble using the following troubleshooting procedure. If the air condi-

tioner is running but breaks down, proceed to troubleshooting step (4).

Important

When all the following conditions are met, we say that the air conditioner will not run at all.

(a) The RUN light does not light up.

(b) The aps do not open.

(c) The indoor unit fan motors do not run.

(d) The self-diagnosis display does not function.

YES

YES

YES

NO

NO

NO

NO

YES

Troubleshooting procedure (If the air conditioner does not run at all)

Is the cor rec t v olt age
connected for the power

supply?

With the power off, do

the aps open manually,

then close again when

the power is turned on?

Is the r e a re c e pt i o n
sound emitted from the
unit when it is operated

by the remote controller?

Replace the indoor PCB and

perform an operation check.

Make sure the correct volt­age is connected, then per­form an operation check.

Is the current fuse on the in-

door unit PCB blown?

Proceed to the indoor PCB

check.

Proceed to the wireless remote
controll er trou bl eshooting
procedure.

If the package components
are not damaged, replace
the fuse and perform an op­eration check again.

* If the voltage is correct, it will be

within the following voltage range.

198 ~ 264 V

-

27

-

(4) Troubleshooting procedure (If the air conditioner runs)

NO

NO

NO

NO

YES

YES

YES

YES

Note (1) Even in cases where only intermittent stop data are generated, the air conditioning system is normal. However, if the same protective operation recurs

repeatedly (3 or more times), it will lead to customer complaints. Judge the conditions in comparison with the contents of the complaints.

Conrm the contents of the customer complaint.

Check the self-diagnosis display.

Eliminate the cause of the trouble and perform an
operation check.

Replace the faulty component, then perform an
operation check.

Identify the faulty component by using the check
procedure corresponding to the content of the trouble.

The cause of the trouble can

be specically identied.

See below.

NO

YES

(5) Self-diagnosis table

When this air conditioner performs an emergency stop, the reason why the emergency stop occurred is displayed by the ashing of

display lights. If the air conditioner is operated using the remote controller 3 minutes or more after the emergency stop, the trouble

display stops and the air conditioner resumes operation.

(1)

Notes (1) The air conditioner cannot be restarted using the remote controller for 3 minutes after operation stops.

When a heat exchanger sensor wire disconnection is detected while operation is
stopped. (If a temperature of –20ºC or lower is detected for 15 seconds, it is
judged that the wire is disconnected.)
(Not displayed during operation.)

When a room temperature sensor wire disconnection is detected while operation
is stopped. (If a temperature of –20ºC or lower is detected for 15 seconds, it is
judged that the wire is disconnected.)
(Not displayed during operation.)

• Broken heat exchanger sensor
wire, poor connector
connection

• Indoor PCB is faulty

• Broken room temperature
sensor wire, poor connector
connection

• Indoor PCB is faulty

When conditions for turning the indoor unit’s fan motor on exist during air
conditioner operation, an indoor unit fan motor speed of 300 rpm or lower is
measured for 30 seconds or longer. (The air conditioner stops.)

• Defective fan motor, poor
connector connection

ON

1 time

flash

ON

2 time

flash

ON

6 time

flash

When there is an emergency stop caused by trouble in the outdoor unit, or the
input current value is found to be lower than the set value.
(The air conditioner stops.)

• Broken compressor wire

• Compressor blockage

2 time

flash

ON

Indoor unit display panel

Cause Display (flashing) condition

RUN

light

TIMER

light

Heat exchanger
sensor error

Room
temperature
sensor error

Indoor fan
motor error

Trouble of
outdoor unit

Description

of trouble