LG
Multi Type Air Conditioner
SERVICE MANUAL
LG
CAUTION
website http://www.lgservice.com
e-mail http://www.lgeservice.com/techsup.html
• BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
• ONLY FOR AUTHORIZED SERVICE PERSONNEL.
MODEL: Indoor Unit: Wall Mounted Type
TMNC092DYAA
TMNC122DYAA
TMNC182D5AA
TMNC242D5AA
TMNC092TYAA
TMNC122TYAA
TMNC182T5AA
TMNC242T5AA
TMNH092DYAA
TMNH122DYAA
TMNH182D5AA
TMNH242D5AA
TMNH092TYAA
TMNH122TYAA
TMNH182T5AA
TMNH242T5AA
Outdoor Unit: T2UC182FAA
T2UC242FAA
T2UC362FAA
T2UC482FAA
T2UH242FAA
T2UH362FAA
T2UH482FAA
T2UH182FAA
2 Multi Air Conditioner
Multi Air Conditioner Service Manual
TABLE OF CONTENTS
Safety Precautions ...3
Product Specifications
...7
Dimensions ...9
Refrigeration Cycle Diagram ...12
Wiring Diagram ...13
Electronic Control Device ...14
Schematic Diagram ...17
Functions ...19
Operation Details ...22
Disassembly ...26
2-way, 3-way Valve ...29
Cycle Troubleshooting Guide
...33
Installation ...39
Flaring work and connection of piping
...42
Connecting the Cable Between Indoor Unit and Outdoor Unit
...47
Service Manual 3
Safety Precautions
Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions must
be followed.
Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is
classified by the following indications.
Meanings of symbol used in this manual are as shown below.
WARNING
CAUTION
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage.
WARNING
Installation
Be sure not to do.
Be sure to follow the instruction.
Do not use a defective or
underrated circuit breaker.
Use this appliance on a
dedi-cated circuit.
• There is risk of fire or electric shock.
Do not let the air conditioner
run for a long time when the
humidity is very high and a
door or a window is left open.
• Moisture may condense and wet or damage furniture.
Always ground the product.
• There is risk of fire or electric shock.
Install the panel and the cover
of control box securely.
• There is risk of fire or electric shock.
Always install a dedicated
cir-cuit and breaker.
• Improper wiring or installation may cause fire or electric shock
Use the correctly rated
break-er or fuse.
4 Multi Air Conditioner
Safety Precautions
Operational
Do not modify or extend the
power cable.
• There is risk of fire or electric shock.
Do not install, remove, or
re-install the unit by yourself
(customer).
• There is risk of fire, electric shock, explosion, or injury.
Be cautious when unpacking
and installing the product.
• Sharp edges could cause injury. Be especially careful of the case edges and the fins on the condenser and evaporator.
For installation, always
con-tact the dealer or an
Authorized Service Center.
• There is risk of fire, electric shock, explosion, or injury.
Do not install the product on a
defective installation stand.
• It may cause injury, accident, or dam-age to the product.
Be sure the installation area
does not deteriorate with age.
• If the base collapses, the air condition-er could fall with it, causing propcondition-erty damage, product failure, and personal injury.
Do not touch(operate) the
product with wet hands.
• There is risk of fire or electrical shock.
Do not place a heater or other
appliances near the power
cable.
• There is risk of fire and electric shock.
Do not allow water to run into
electric parts.
• It may cause There is risk of fire, fail-ure of the product, or electric shock.
Service Manual 5
Safety Precautions
Do not open the inlet grille of the product
dur-ing operation. (Do not touch the electrostatic
filter, if the unit is so equipped.)
• There is risk of physical injury, electric shock, or product fail-ure.
Be cautious that water could not enter the
product.
• There is risk of fire, electric shock, or product damage.
Do not store or use flammable gas or
com-bustibles near the product.
• There is risk of fire or failure of product.
If strange sounds, or smell or smoke comes
from product. Turn the breaker off or
discon-nect the power supply cable.
• There is risk of electric shock or fire.
6 Multi Air Conditioner
Operational
Safety Precautions
Use two or more people to lift
and transport the product.
• Avoid personal injury.
Use a soft cloth to clean. Do
not use harsh detergents,
sol-vents, etc.
• There is risk of fire, electric shock, or damage to the plastic parts of the prod-uct.
Do not touch the metal parts
of the product when removing
the air filter. They are very
sharp!
• There is risk of personal injury.
Do not step on or put anyting on the product.
(outdoor units)
• There is risk of personal injury and failure of product.
Do not insert hands or other objects through
the air inlet or outlet while the product is
oper-ated.
• There are sharp and moving parts that could cause personal injury.
CAUTION
Installation
Wa
x Thinner
check for gas (refrigerant)
leakage after installation or
repair of product.
• Low refrigerant levels may cause fail-ure of product.
Install the drain hose to
ensure that water is drained
away properly.
• A bad connection may cause water leakage.
Keep level even when
installing the product.
• To avoid vibration or water leakage.
Service Manual 7
Product Specifications
Product Specifications
Indoor Unit
Power Supply Ø,V,Hz r h / u t B y ti c a p a C g n il o o C y ti c a p a C Heating W kcal/hr r h / u t B W kcal/hr Current Normal running current A Fan ModelFan Type
Motor Output W Air Flow Rate CMM(CFM) Capacitor µF/Vac Coil Tube Size (OD) mm(inch)
Fins per inch
No. of Rows & Column/No.
3 ± ) A ( B d ) L / M / H (l e v e L d n u o S Referigerant Referigerant Control ) h c n i( m m d i u q i L n o it c e n n o C g n i p i P ) h c n i( m m s a G ) s b l( g k r o o d n I t h g i e W t e N ) h c n i( m m D * H * W s n o is n e m i D ) h c n i( m m D * H * W n o is n e m i D g n ik c a P
Model TMNH092DYAA TMNH122DYAA d e t n u o m l l a W e p y t ti n u r o o d n I 1Ø, 220V, 60Hz 1Ø, 220V, 60Hz 0.27 0.20 CFF RP15C-1 WEILING RP15C-1 WEILING 42 8.4/7.6/6.4(296.5/268.3/225.9) 7/6/5(247.1/211.8/176.5) 0.9/400 20FPI S-FIN 2R 15C R-22 R-22 6.35(1/4) 12.7(1/2) 7/9 840*270*161 6.35(1/4) 9.52(3/8) 7/9 840*270*161 892*322*198 892*322*198 5 CFF 37 0.9/400 20FPI S-FIN 2R 15C 34/31/29 40/37/34 Thermistor 5 12,000 3,517 3,024 9,000 2,638 2,268 12,000 3,517 3,024 9,000 2,638 2,268
8 Multi Air Conditioner
Product Specifications
Note :
1. Capacities are based on the following conditions:
Cooling: - Indoor Temperature 26.7°C(80°F) DB / 19.4°C(67°F) WB - Outdoor Temperature 35°C(95°F) DB / 23.9°C(75°F) WB Piping Length - Interconnecting Piping Length 7.5m
- Level Difference of Zero.
2. Due to our policy of innovation some specifications may be changed without notification. 3. At least two indoor units should be connected.
Outdoor Unit
Unit T2UH182FAA T2UH242FAA
W 3077/ 3077 3517 / 3517 Btu/hr 10500 / 10500 12000 / 12000 W 3077/ 3077 3517 / 3517 Btu/hr 10500 / 10500 12000 / 12000 W 5275 / 5275 7034 Btu/hr 18,000 / 18,000 24,000 Power input (Cooling/heating) A+B W 1850/1650 2380/2420 Running current (Cooling/heating) A+B A 8.6/ 7.6 11/11.3 f,V,Hz 1,220,60 1,220,60 No. * mm2 3*2.5 3*2.5 No. * mm2 4*0.75 4*0.75 W/W 2.85 2.96 Btu/hr W 9.7 10.1 W/W 3.20 2.91 Btu/hr W 10.9 9.9 Capillary Capillary g(oz), type 1050, R22 A: 650 /B: 650 R22
Dimensions (W*H*D) Outdoor unit mm 801*555*262 870*655*320
Packing dimensions (W*H*D) Outdoor unit mm 960*610*384 1002*700*422
kg (lbs) 50 (110) 63 (139)
Rotary Rotary
1 2
QJ278KDF QK185KBK
LG LG
SUNISO 4GSI SUNISO 4GSI
MOTOR TYPE PSC PSC
Oil charge cc 410 350
Tube size (OD) inch (mm) 0.276 (7.0) 0.276 (7.0)
18 18 2R 24C 2R 28C Model YGK25-6A-9 KFD-60K11 No. of poles 6 6 CMM (CFM) 49 (1398) 40 (1142) Propeller Propeller
No. used / dia. EA / inch (mm) 1 / 18.1(460) 1 / 18.1(460) Side discharge Side discharge
RPM ±30 1020 880 dB +3(dB+1) 54(56) 54(56) Liquid A inch (mm) 1/4 (6.35) 1/4 (6.35) Gas A inch (mm) 3/8 (9.52) 1/2 (12.7) Liquid B inch (mm) 1/4 (6.35) 1/4 (6.35) Gas B inch (mm) 3/8 (9.52) 1/2 (12.7)
Max piping length total m 30 30
Std. Piping length m 7.5 7.5
m 15 / 7.5 15 / 7.5
Stuff Quantity (Set) 20FT/40FT/40FT(H) 80/168/192 65/138/156
Power supply Power supply cable Connecting cable Item Capacity (Cooling/heating) A (SY 9K) B (SY 9K ) A+B (9K+9K) EER cooling COP heating Refrigerant control Refrigerant charge Net weight Compressor Type Quantity Model name Maker Oil type
Outdoor coil FPI
No. of rows & columns
Noise level +3 SVC valves
Max. piping length per each room / elevation Outdoor Motor
Air circulation
Outdoor fan Type
Service Manual 9
Dimensions
Dimensions
Installation plate D H W m m W m m H m m D Model DimensionIndoor Unit
TMN 122DYAA TMNH092DYAA 840 270 161 840 270 161 H10 Multi Air Conditioner
Dimensions
Outdoor Unit
Model: T2UH182FAA
W D L1 L2 L9 L4 L3 H L10 L10 L10 L8 L7 L5 L6 801 m m W 555 m m H 262 m m D 339 m m 1 L 37 m m 2 L 543.6 m m 3 L 11.4 m m 4 L 591 m m 5 L 105 m m 6 L 105 m m 7 L 72.5 m m 8 L 74.5 m m 9 L 79 m m 0 1 L T2UH182FAA MODEL DIM Gas side 3-way valve Liquid side 2-way valveService Manual 11
Dimensions
Model : T2UH242FAA
W D L1 L2 L9 L4 L3 H L10 L10 L10 L8 Gas side 3-Way valve Liquid side 2-Way valve L7 L5 L6 870 m m W 655 m m H 0 2 3 m m D 0 7 3 m m 1 L 5 2 m m 2 L 630 m m 3 L 5 2 m m 4 L 6 4 5 m m 5 L 0 6 1 m m 6 L 0 6 1 m m 7 L 55 m m 8 L 80 m m 9 L 0 5 m m 0 1 L T2UH242FAA MODEL DIM12 Multi Air Conditioner
Refrigeration Cycle Diagram
Refrigeration Cycle Diagram
T2UH182FAA / T2UH242FAA
12K
12K
A
B
Indoor Side Outdoor Side
A Comp B Comp Refrigerent Flow Cooling Heating
13
Service Manual
Wiring Diagram
Wiring Diagram
Indoor Unit
Outdoor Unit
T2UH242FAA
.
2
T2UH182FAA
.
1
FAN B/P1B/P2 B C EBY49965301 RD BRYL 2 BK WH 1 BLRD BL RD WH BL BKBL OR BL BL BL WH TB B C BL BR BR BR BR BK EBY49965302 3 4 TB L N14 Multi Air Conditioner
Electronic Control Device
Electronic Control Device
Indoor Unit
• MAIN P.C.B ASM
• TOP VIEW
Service Manual
Electronic Control Device
Outdoor Unit
Multi Air Conditioner
Electronic Control Device
Display P.C.B ASM
Service Manual
Schematic Diagram
Schematic Diagram
Indoor Unit
42 28 1516 22 20 19 18 17 21 26 25 23 24 27 11121314 9 8 10 3433 32 29 30 31 38373635 414039 53 55 56 58 57 54 61 63 62 64 60 59 5 4 6 7 123 49 51 52 50 44 45 43 48 4746 FAN 12V COMP4WAY OUTDOOR FANL(AC) LOADCOMP4WAY
2. The unit of undefined capacitors is uF.
1. The unit of undefined resistance is ohm, 1/8W, 5%.
NOTE Direct type 12 3 PCB outside 12 Angle type CN-MOTOR 3 2 1 CN-4WAY SH-CAPACITOR 22 680 33 CN-12V 2 1 1 2 2 1 12V AC PART 3 TLP421(V4 BL) IC01L VOLTAGE GND DC LOW INT 4 1N4148 VOLTAGE GND 2 DC HIGH 300K1/2W NF01J40mH/1A 1IN4007 1N4007 D05J R03L 300K1/2W 27k1/6W D01L 1 R02L R01L 1N4007 5V 1N4007 D03J C02JMETAL FILM100nF/275V/436D D02J1N4007 D01J D04J 12V INDOOR FAN R01F 560 1/4W 100,1/2W 250V/T2A 100nF/275V/436D C01JMETAL FILM ZNR01JTVR10561 FUSE
RY- FAN RY-4 WAY
3 4 3 4 TLP762JF SM1L43 T1 R03F 1/2W 5 12 4 IC01F 3 TR01FTRAICS T2 METAL FILM100nF/275V/436D C01F TVR10561 120, 1/2W R04F ZNR01F COMPRESSOR 1 1 CN-N1 RY-COMPG4A-1A-E-LG 3 N AC220~240V50/60Hz L MOTOR 4 1 1 3 3 1 1 2 2 32 1 3 1 2(N)1(L) 2 TERMINAL 5 4 5 FAN MOTOR OUTDOOR 4-WAY 4 11 2 4 3 5 Vout GND Vcc RECEIVER DISPLAY C C AB B KTC3198-Y 1 1 11 20KR01P(2012) 10V 2 2 HVB 33 1 CN-HVB 1 Option HVB OUT 6 3 A0
A1 EEPROMM24C01-MN6T SGS-THOMSON 8PIN SOP TRAY EEPROM IIC
4 SCL SDA 5 GA2 12 8 Vcc 7 WP receiver 5 5 55 C13L SW(FORCE) 104 2 2 11 2 2 1 1 44 3 3 4 4 3 3 R01G~R04G 1 220 1/8W 7 7 6 6 7 7 6 6 8 8 8 8 CN-DISP1 KRA107S Q02G Q03GKRA107S 220uF SD Force + C12L 5V Q01GKRA107S 5V KID65004AF 9 IC01G 5V 5V 20KR02P(2012) OR4H OR6H OR5H Hi Med Low OR3H OR1H OR2H O/L F2 F 1 R26H R21H 5V d 5V s 1 s V d Force 20K R15L 5V C08D,AXIAL 103,50V A V A Vss0Vdd0 AVref R24H R23H R25H 12.1K, 1% R21H~R26H R22H 5V RESETAVdd C07D,AXIAL103,50V X2 X1 CRTL8.00MSOT CSTS0800MG03-T2 R01B1M OSC01B 2SC5343 R03G
OUTDOOR LED2SLEEPLED1OPERATION
A TIMER LED3 R02G R01G 3 3 2 2 3 3 2 2 6 6 44 55 6 6 5 5 4 4 LED4 R04G 77 7 7 11 6 16 15 14 1 2 3 13 12 4 5 12V 10 7 KID65004AF IC01M BL OR 4 5 RD 4 5 2 1 3 PK YL 2 1 3 STEPPING MOTOR (UP/DOWN) HVB OUT 15 2 8 16 9 1 13 14 3 4 INDOOR FAN COMP 10 11 12 5 6 7 UPD780023AGC-C NEC INT1INT0Vss1 BZ Q01L R11L,1/6W FAN 12 4 1 2 3 16 15 14 13 2 4 3 5 4WAY KID65004AF 8 7 5 6 9 10 11 IC02M 1 CN-L/R DC PART STEPPING MOTOR (LEFT/RIGHT) Option 1 INT RELAY CONNECTION CN-TH1 10K R05H R02H12.1K 1% R04H6.2K 1% 5V PIPE-TH R02F 11 44 33 22 ROOM-TH 50V 5V 3 10uF C02A IC01A 1 3.6V S7136 2 KIA7036P R05L56K R02A,4.7K CN-MOTOR 33 FAN INDOORMOTOR 34 R12L 5.1K receiver 680pF,50V 12K R04L,1/6W 5V C11L ,AXIAL 5V PKM13EPY-4002 R02E,20 R01E1K BZ01E IC01J DMR40 EE1916SLp=4.50mH,+-8%,40Khz 158T VOLTAGE GND DC LOW + 5V C04D C05D 10V SD 104,AXAIL50V 220 S78L05L 1W I IC01D O 7805 D01DUF4004 ZBF503D-TA-K TDK TP 12uH L01D,IMD 1/6W 104,AXIAL C03D R01D4.7K 50V 100uF C02D 25V 12V 28T 220UF C01D 25V SMPS 450V/SD 1N4937 DC HIGHVOLTAGE GND 100,1/6W R02J 50V C05J0.1uF100V RO1J27K1/4W,1% DO6J 1uF C04J LNK500P S D C + 10uF C03J NTC SCK-102 CI-B2012-100KJT R/TP 100nH L02D 2 4 5 5 4 3 1 3 1 2 12V 5V GND R14L 1K C01P,AXIAL,103,50V X RT X DD R01A,1K R03A,100 AXIAL C01A103 222,400V C06J,AXIAL + 1 2 1 2 33 12V CN-P/O + R01H,1/6W,10K R03H,1/6W,10K C14L C02H C01H R13L 100 1/4W 12V BL PK YL OR RD 8 PLASMA CHIP RXD TXD C03TCHIP R06H,1/6W,10K C03H 2 3 1 2 3 1 CN-TH2 6.2K R07H 1% 5V 11 3 3 22 77 6 6 5 5 44 CN-OPTION GND
OR1H (PIN 33) OR2H (PIN 32) OR3H (PIN 31) OR4H (PIN 30) OR5H (PIN 29)OR6H (PIN 28)
C01LAXIAL 3 3 CN-RF 5V 1 1 2 2
CHIP(104) or 10K ohm resistor
C01T R01T,1K,AXIAL CHIP(681) C02T 1 3 8 6 Metal film + LINK SWICH CN-4WAY CN-N2 CN-LIVE WIRE-N R02D C06D,AXIAL 4.7K,1/6W 102,400V WIRE-N 3 4 CN-LIVE PTC-HEATER RF Transmitter on artworking,Eyelet pattern
10M,1W,5% noise character increasing thing
R03J 103 103 103 YW396-03AV(WH) YW396-03AV(YL) 103 1K 102 or 10K ohm resistor AXIAL AXIAL 50V 50V AXIAL50V 50V 10350V CN-DISP2 CN-U/D CN-CENT SMD
BARE PCB:6870A90238A ASM PCB:6871A20572
DISPLAY BARE PCB : 6870A90240A DISPLAY ASM PCB : 6871A20574A
If CN-CENT don't use,this use resistor 10K(2012).
OR1H OR2HOR3H OR4H OR5H OR6H
PCB ASM : 6871A20577
If CN-RF don't use,this use resistor 10K(2012).
2UEW0.14
TIW0.25
Option : only This is applied the H/P SRAC.
P/no:6200JB8010P WRAC APPLIED
OPTION : noise character increasing thing
OPTION : noise character increasing thing
PWB:6870A90243A 10K 47K 47K 10K 47K 10K
Only no low temporature detection function.
10K+-5% 5K+-5% 15pF 15pF GLASS TYPE R11H R12H 5V 0J1H 0J2H 5V
OPTION : import or export operation option
R11H~R12H20K,2012 1-4 79T4-3 79T R04D0 ohm 0 ohm R03D C09Dopen C10Dopen
Anti Surge Res.
Anti Surge Res.
Anti Surge Res.
Schematic Diagram
Service Manual
Functions
Function of Indoor Unit
• Room temperature sensor. (THERMISTOR)
• Maintains the room temperature in accordance with the Setting Temp.
• Indoor fan is delayed for 5 seconds at the starting.
• Restarting is inhibited for approx. 3 minutes.
• High, Med, Low, Chaos
--- Lights up in operation --- Lights up in Sleep Mode
--- Lights up in Energy Saving Mode
--- Lights up in Defrost Mode(for Heating model)
--- Lights up in Compressor operation(for Cooling model)
• Intermittent operation of fan at low speed.
• The fan is switched to low(Cooling), med(Heating) speed. • The unit will be stopped after 1, 2, 3, 4, 5, 6, 7 hours.
• The fan is switched to intermittent or irregular operation • The fan speed is automatically switched from high to low speed.
• The louver can be set at the desired position or swing up and down automatically.
Wall mounted type
Operation ON/OFF by Remote controller
Sensing the Room Temperature
Room temperature control
Starting Current Control
Time Delay Safety Control
Indoor Fan Speed Control
Operation indication Lamps (LED)
OUT DOOR
Health Dehumidification Operation
Sleep Mode Auto Control
Natural Air Control by CHAOS Logic
Airflow Direction Control
Multi Air Conditioner
Functions
Healthy Dehumidification Operation Mode.( )
Remote Controller
Operation ON/OFF
Operation Mode Selection
Temperature Setting
JET COOL
Sleep Operation
Airflow Direction Control
(Cooling model only)
TEMPERATURE LOW HIGH
Cooling Operation Mode.( )
Heating Operation Mode.( )
Fan Operation Mode Energy Saving Mode Fan Speed Selection
(Low) (Med) (High) (CHAOS)
: Cancel Sleep Mode, Timer ON or Timer OFF
: 1, 2, 3, 4, 5, 6, 7, Off Timer
: Fan Operates without cooling or heating.
Cooling Down to 18°C
Up to 30°C
Service Manual 2
Function
Display Function
Self-diagnosis Function
• Cooling, Soft Dry, Fan
• Sleep Mode Operation Indicator
Energy Saving Mode Sleep Timer Indicator
Compressor on Indicator DOOROUT
Error Indicator
• The function is to self-diagnoisis airconditioner and express the troubles identifically if there is any trouble. • Error mark is ON/OFF for the operation LED of evaporator body in the same manner as the following table. • If more than two troubles occur simultaneously, primarily the highest trouble fo error code is expressed. • After error occurrence, if error is released, error LED is also released simultaneously.
• To operate again on the occurrence of error code 12, be sure to pull out power cord and then re-insert. • Having or not of error code is different from Model.
l
e
d
o
M
g
n
i
l
o
o
C
3sec 3sec 3sec
(once)
Error Code
1
Error Display LED
(Indoor body operation LED) Error contents
• Indoor room temperature thermistor open/short • Indoor pipe temperature
thermistor open/short.
• Indoor Thermistor assembly check
SVC check point
2
Multi Air Conditioner
Operation Details
Operation Details
Function of Controls
• DISPL
AY
C/O Model Operation Indicator• ON while in appliance operation, OFF while in appliance pause. •
Sleep Mode
Comp. Running Incidator •
Cooling Mode Operation
• When the intake air temperature reaches0.5 °C below the setting temp, the compressorand the outdoor fan stop.
• When itreaches0.5 °C above the setting temp, they start to operate again.
Compressor ON Temp Setting Temp+0.5°C
Compressor OFF Temp Setting Temp-0.5°C
• While in compressorrunning, operating with the speedset by the remote control. While in compressor
Health
• When the operation input by the remote control is received,the intake air temperature is detected and the setting temp is automatically set according to the intake air temperature.
26°C Intake Air Temp 25°C
24°C Intake Air Temp<26°C Intake Air Temp-1°C 18°C Intake Air Temp<24°C Intake Air Temp-0.5°C
Intake Air Temp<18°C 18°C
•
• Whilethe intake air temp is between compressoron temp. and compressor temp.,10-min
Compressor ON Temp. Setting Temp+0.5°C Compressor OFF Temp. Setting Temp-0.5°C •
Energy Saving Mode
Operation Details
Airflow Speed Selection
• The airflow speed of the indoor fan is set to high, medium, low, or chaos (auto) by the input of the airflow speed selection key on the remote control.
Sleep Timer Operation
• When the sleep time is reached after <1,2,3,4,5,6,7,0(cancel) hr> is input by the remote control while in appli-ance operation, the operation of the appliappli-ance stops.
• While the appliance is on pause, the sleep timer mode cannot be input.
• While in cooling mode operation, 30 min later since the start of the sleep timer, the setting temperature increases by 1°C. After another 30 min elapse, it increases by 1°C again.
• When the sleep timer mode is input while in cooling cycle mode, the airflow speed of the indoor fan is set to the low.
• When the sleep timer mode is input while in heating cycle mode, the airflow speed of the indoor fan is set to the medium.
Chaos Natural Wind Mode
• When the Chaos Natural Wind mode is selected and then operated, the high, medium, or low speed of the air-flow mode is operated for 2~15 sec. randomly by the Chaos Simulation.
Jet Cool Mode Operation (C/O Model)
• If the Jet Cool key is input at any operation mode while in appliance operation, the Jet Cool mode operates. • In the Jet Cool mode, the indoor fan is operated at super-high speed for 30 min at cooling mode operation. • In the Jet Cool mode operation, the room temperature is controlled to the setting temperature, 18°C
• When the sleep timer mode is input while in the Jet Cool mode operation, the Jet Cool mode has the priority. • When the Jet Cool key is input, the upper/lower vanes are reset to those of the initial cooling mode and then
operated in order that the air outflow could reach further.
Forced Operation
• Operation procedures when the remote control can't be used. • The operation will be started if the power button is pressed. • If you want to stop operation, re-press the button.
• While in forced operation, the key input by the remote control has no effect and the buzzer sounds 10 times to indicate the forced operation.
Heat pump Model Cooling Model
Room Temp. 24°C 21°C Room Temp. < 24 °C Room Temp. < 21 °C
Operating mode Cooling Cooling Healthy Dehumidification Heating
Indoor FAN Speed High High High High
Setting Temperature 22°C 22°C 23°C 24°C
Test operation
•
During the TEST OPERATION, the unit operates in cooling mode at high speed fan, regardless of room tem-perature and resets in 18±1 minutes.•
During test operation, if remote controller signal is received, the unit operates as remote controller sets. If you want to use this operation, open the front panel upward and Press the power button let it be pressed for about 3 seconds.•
If you want to stop the operation, re-press the button.Operation Details
Auto restart
•
In case the power comes on again after a power failure, Auto Restarting Operation is the function to operate procedures automatically to the previous operating conditions.Protection of the evaporator pipe from frosting
• If the indoor pipe temp is below 0°C in 7 min. after the compressor operates without any pause while in cool-ing cycle operation mode, the compressor and the outdoor fan are turned off in order to protect the indoor evaporator pipe from frosting.
• When the indoor pipe temp is 7°C or higher after 3 min. pause of the compressor, the compressor and the outdoor fan is turned on according to the condition of the room temperature.
Buzzer Sounding Operation
• When the appliance-operation key is input by the remote control, the short "beep-beep-" sounds. • When the appliance-pause key is input by the remote control, the long "beep—" sounds.
25
Service Manual
Operation Details
Disassembly
Disassembly
Indoor Unit
Disconnect the unit from power supply before mak-ing any checks.
Be sure the power switch is set to “OFF ”.
To remove the Grille from the Chassis.
• Set the up-and-down air discharge louver to open position (horizontally) by finger pressure.
• Remove the securing screws.
• To remove the Grille, pull the lower left and right side of the grille toward you (slightly tilted) and lift it straight upward.
1. Before removing the control box, be sure to take out the wire screwed at the other end.
Earth Conductor
Disassembly
2. To remove the Control Box. • Remove securing screws.
• Pull the control box out from the chassis carefully.
3. To remove the Discharge Grille.
• Unhook the discharge grille and pull the discharge grille out from the chassis carefully.
4. To remove the Evaporator.
• Remove 3 screws securing the evaporator(at the left 2EA in the Eva Holder, at the right 1EA).
Screw
• When repair, do not damage the Caution label.
Disassembly
• Unhook the tab on the right inside of the chassis at the same time, slightly pull the evaporator toward you until the tab is clear of the slot.
5. To remove the Motor Cover • Remove 2 securing screw.
• Pull the motor cover out from the chassis carefully.
6. To remove the Cross-Flow Fan
• Loosen the screw securing the cross-flow fan to the fan motor (do not remove).
• Lift up the right side of the cross-flow fan and the fan motor, separate the fan motor from the cross-flow fan.
• Remove the left end of the cross-flow fan from the self-aligning bearing.
Motor cover
Bearing
Cross-flow fan
2-way, 3-way Valve
2-way, 3-way Valve
2-way Valve (Liguid Side) 3-way Valve (Gas Side)
Works Shaft position Shaft position Service port
Shipping Closed Closed Closed
(with valve cap) (with valve cap) (with cap)
Air purging Open Closed Open
(Installation) (counter-clockwise) (clockwise) (push-pin or with
vacuum pump)
Operation Open Open Closed
(with valve cap) (with valve cap) (with cap)
Pumping down Closed Open Open
(Transfering) (clockwise) (counter-clockwise) (connected
manifold gauge)
Evacuation Open Open Open
(Servicing) (with charging
cylinder)
Gas charging Open Open Open
(Servicing) (with charging
cylinder)
Pressure check Open Open Open
(Servicing) (with charging
cylinder)
Gas releasing Open Open Open
(Servicing) (with charging
cylinder) 3. 2. 1. 4. 5. 6. Flare nut To piping connection Open position Closed position Flare nut Valve cap To piping connection Open position Closed position Hexagonal wrench (4mm) To outdoor unit Pin Service port Service port cap To outdoor unit
Service Manual 29
2-way, 3-way Valve
•
Procedure
1. Confirm that both the gas side and liquid side valves are set to the open position.
- Remove the valve stem caps and confirm that the valve stems are in the raised position. - Be sure to use a hexagonal wrench to operate
the valve stems.
2. Operate the unit for 10 to 15 minutes.
3. Stop operation and wait for 3 minutes, then con-nect the manifold gauge to the service port of the gas side valve.
- Connect the hose of the gauge with the push pin to the service port.
4. Air purging of the charge hose.
- Open the Low-handle valve on the gauge slightly to air purge from the hose.
5. Set the liquid side valve to the closed position.
6. Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 1kg/cm2
g. 7. Immediately set the gas side valve to the closed
position.
- Do this quickly so that the gauge ends up indi-cating 1kg/ g.
8. Disconnect the charge set, and mount the liquid side and gas side valve caps and the service port nut.
- Use torque wrench to tighten the service port nut to a torque of 1.8kg.m.(4.2kg*m/5.5kg*m) - Be sure to check for gas leakage.
Indoor unit Outdoor unit Liquid side Close Gas side 2-Way valve Open 3-Way valve manifold gauge Hi- handle (CLOSE) Low-handle (CLOSE)
(1) Pumping down
2-way, 3-way Valve
(2) Evacuation
(All amount of refrigerant leaked)
• Procedure
1. Confirm that both the liguid side valve and gas side valve are set to the opened position. 2. Connect the vaccum pump to the center hose of
the manifold gauge.
3. Connect the service port of the gas side valve to the low side of the gauge.
4. Connect power supply to outdoor unit. 5. Evacuation for approximately one hour.
- Confirm that the gauge needle has moved toward-76 cmHg (vacuum of 4 mmHg or less).
6. Close the Low handle of the gauge turn off the vacuum pump, and confirm that the gauge nee-dle does not move(approximately 5 minutes after turning off the vacuum pump).
7. Disconnect the charge hose from the vacuum pump.
- Vacuum pump oil.
If the vacuum pump oil becomes dirty or deplet-ed,replenish as needed.
8. Mount the valve caps and the service port caps.
Indoor unit Outdoor unit Liquid side Close Gas side 2-Way valve Open 3-Way valve manifold gauge Vacuum pump Hi- handle (CLOSE) Low-handle (OPEN)
Service Manual 31
2-way, 3-way Valve
(3) Gas Charging
(After Evacuation)
• Procedure
1. Connect the gauge to the charging cylinder.
- Connect the charge hose which you disconnect-ed from the vacuum pump to the valve at the bottom of the cylinder.
- If you are using a gas cylinder, also use a scale and reverse the cylinder so that the system can be charged with liquid.
2. Purge the air from the charge hose.
- Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the air. (Be careful of the liquid refrigerant). The procedure is the same if using a gas cylinder.
3. Open the low handle on the gauge and charge the system with liquid refrigerant.
- If the system can not be charged with the speci-fied amount of refrigerant, it can be charged with a little at a time (approximately 150g each time) while operating the air conditioner in the cooling cycle; however, one time is not suffi-cient, wait approximately 1 minute and then repeat the procedure(pumping down-pin).
4. Immediately disconnect the charge hose from the gas side valve's service port.
- Stopping partway will allow the gas to be dis-charged.
- If the system has been charged with liquid refrigerant while operating the air conditioner turn off the air conditioner before disconnecting the hose.
5. Mount the valve stem nuts and the service port nut.
- Use torque wrench to tighten the service port nut to a torque of 1.8 kg.m.(4.2kg.m/5.5kg.m.) - Be sure to check for gas leakage.
Indoor unit Outdoor unit Liquid side Close Gas side 2-Way valve Open 3-Way valve manifold gauge Charging cylinder Hi- handle (CLOSE) Low-handle (OPEN) Check valve
This is different from previous procedures.
Because you are charging with liquid refrigerant from the gas side, absolutely do not attempt to charge with larger amounts of liquid refrigerant while operating the air conditioner.
Cycle Troubleshooting Guide
Cycle Troubleshooting Guide
Trouble analysis
1. Check temperature difference between intake and discharge air and operating current.
All amount of refrigerant leaked out. Check refrigeration cycle.
Refrigerant leakage Clog of refrigeration cycle Defective compressor
Excessive amount of refrigerant
Normal
Notice:
Temperature difference between intake and discharge air depends on room air humidity. When the room air humidity is relativery higher, temperature difference is smaller. When the room air humidity is relatively lower temperature difference is larger.
2. Check temperature and pressure of refrigeration cycle.
Notice:
1. The suction pressure is usually 4.5~6.0 kg/cm2
G at normal condition.
2. The temperature can be measured by attaching the thermometer to the low pressure tubing and wrap it with putty.
Temp. difference : approx. 0°C
Current : less than 80% of
rated current
Temp. difference : approx. 8°C
Current : less than 80% of
rated current
Temp. difference : less than 8°C
Current : over the rated
current
Temp. difference : over 8°C Temp. Difference
Operating Current
Suction pressure Temperature
(Compared with (Compared with Cause of Trouble Description
the normal value) the normal value)
High Defective compressor Current is low.
Normal Excessive amount of High pressure does not quickly
refrigerant rise at the beginning of operation.
Insufficient amount of Current is low.
Lower Higher refrigerant(Leakage)
Clogging Current is low.
Higher
Cycle Troubleshooting Guide
Electronic Parts
Product does not operate at all.
(* Refer to Electronic Control Device drawing and Schematic diagram.)
Turn off Main PowerTurn on Main Power
Does "beeping" sound is made from the Indoor Unit?
Primarily, the operating condition of Micom is OK. Check the voltage of power (About AC 220V, 60Hz)
• Main power's voltage • Voltage applied to the unit
• Connecting method of Indoor/Outdoor connecting cable
• Check PWB Assembly - Fuse
- Pattern damage - Varistor(ZNR01J)
Check the connection housing for contacting • Connector related to CN-NI, RY-COMP NO.3 • Connector related to CN-MOTOR
• Connector contacting of Outdoor Fan/Compressor • Display PCB Assembly Check
Check each load(Indoor/Outdoor Fan Motor, Compressor, Stepping Motor) and contacting condition of related connector
Main PCB Board Operation Check Items • SMPS Transformer (Indoor unit) - Input Voltage - Output Voltage(C03D) • IC01D(7805) Output (Indoor/Outdoor unit)
• IC01A(KIA7036, Reset IC) OSC01B(8MHz)
• Replace Trans
• Replace IC01D
• Replace faulty parts - About AC220V/240V±10% - Check the power voltage
- About DC12V
• DC +5V
• Voltage of IC No.1,
(DC +4.5V over) and Soldering condition.
Content Remedy
NO YES
(After 10 seconds)
Cycle Troubleshooting Guide
The product is not operate with the remote controller.
Turn on Main Power
While the compressor has been stopped, the compressor does not operate owing to the delaying function for 3 minutes after stopped.
Caused by other parts except the remote control Cause by the remote control
When the mark( ) is displayed in LCD screen, replace
battery. Check the contact of CN-DISP1 connector.
When the compressor stopped Indoor Fan is driven by a low speed. At this point the wind speed is not controlled by the remote controller. (When operated in the Sleeping Mode, the wind speed is set to the low speed by force.)
Check Display PCB Assembly
- Voltage between CN DISP1 - : DC +5V Check the connecting circuit between the remote controller
MICOM (No. ) - R16(1.5k) - IR LED - TR - R17(1Ω). or
MICOM (No. ) - R1(1.5k) - IR LED - TR - R2(1Ω).
Check point
• Check the connecting circuit between CN-DIS1 -R11L(100Ω) - C01A(100nF) - MICOM PIN
• Check Receiver Assembly
61
Cycle Troubleshooting Guide
Compressor/Outdoor Fan are unable to drive.
Turn on Main Power
Operate "Cooling Mode( )" by setting the desired temperature of the remote controller is less than one of the indoor temperature by 1°C at least.
When in Air Circulation Mode, Compressor/Outdoor Fan is stopped.
Check the sensor for indoor temperature is attached as close as to be effected by the temperature of Heat Exchanger(EVA).
When the sensor circuit for indoor temperature and connector are in bad connection or are not engaged, Compressor/Outdoor Fan is stopped.
• Check the related circuit of RY-FAN.
• Check the indoor temperature sensor is disconnected or not(About 10kΩ / at 25°C).
Turn off Main Power
• Check the electrical wiring diagram of outdoor side. • Check the abnormal condition for the component of
Compressor/Outdoor Fan Motor.
• Check the "open" or "short" of conmecting wires between indoor and outdoor.
Check Relay(RY - COMP) for driving compressor.
• When the power(About AC220V/240V) is applied to the connecting wire terminal support transferred to compressor, PWB Assembly is normal. • Check the circuit related to the relay.
Check point COMP ON COMP OFF Between Micom(No.
DC5V DC0V 59) and GND
Between IC01M(No. 15) Below DC 1V
About DC12V and GND (app)
Cycle Troubleshooting Guide
Check the TRIAC high speed operation by remote control. (The Indoor Fan Motor is connected)
Turn off Main power
Check the connection of CN-MOTOR
Check the Fan Motor
Check the Fuse(AC250V/T2A)
Turn ON Main Power
Check the related circuit of indoor Fan Motor.
• The pin NO 58 of Micom, and the part for driving TRIAC(the input and output signal of IC01M, PIN NO 1, 16)
• Check the pattern • Check the TRIAC
- TRIAC Open: Indoor Fan Motor never operate
- TRIAC short: Indoor Fan Motor always operates in case of ON or OFF.
When indoor Fan does not operate.
The voltage of PIN NO 1(orange) and 3(yellow) of CN-MOTOR.
About AC 180V over About AC 50V over
TRIAC is not damaged TRIAC Check
Cycle Troubleshooting Guide
• Confirm that the Vertical Louver is normally geared with the shaft of Stepping Motor.
• If the regular torque is detected when rotating the Vertical Louver with hands Normal
• Check the connecting condition of CN-U/D Connector
• Check the soldering condition(on PWB) of CN-U/D Connector
If there are no problems after above checks
• Confirm the assembly conditions that are catching and interfering parts in the rotation radial of the Vertical Louver
When Vertical Louver does not operate.
Check the operating circuit of the Vertical Louver
• Confirm that there is DC +12V between pin (RED) of CN-U/D and GND.
• Confirm that there is a soldering short at following terminals. - Between , , and of MICOM
- Between , , and of IC01M - Between , , and of IC01M
60 61 62 63
Installation
Installation
Select the best Location
1. If an awning is built over the unit to prevent
direct sunlight or rain exposure, make sure
that heat radiation from the condenser is not
restricted.
2. Ensure that the spaces indicated by arrows
around front, back and side of the unit.
3. Do not place animals and plants in the path
of the warm air.
4. Take the air conditioner weight into account
and select a place where noise and vibration
are minimum.
5. Select a place so that the warm air and noise
from the air conditioner do not disturb
neighbors.
Rooftop Installations:
If the outdoor unit is installed on a roof
structure, be sure to level the unit. Ensure the
roof structure and anchoring method are
adequate for the unit location. Consult local
codes regarding rooftop mounting.
more than 20cm more than 70cm more than 20cm
Service Manual 39
Multi Air Conditioner
Installation
Service Manual
Installation
Piping Length and Elevation
Indoor Unit Capacity Pipe Size Rated Max Additional (Btu/h) Gas Liquid Length Length Refrigerant
• The maximun allowable level and piping length
18k 24k
Refrigerant Charge
Extra refrigerant = (Extended length - Rated length) x Additional refrigerant
7.5m A
B
7.5m Installation of the outdoor unit
on an upper position
Installation of the outdoor unit on a lower position A B 7.5m 7.5m Model [Outdoor unit] T2UH182FAA 7.5m 15m 15m - 30m (A+B) T2UH242FAA Standard length A,B
Max. piping length of each indoor unit
A B C
Max. total piping length
1/2"(12.7mm) 1/4"(6.35mm) 7.5 15
3/8"(9.52mm) 1/4"(6.35mm) 7.5 15 20g/m 30g/m
Flaring work and connection of piping
Flaring work and connection of piping
Flaring work
Flaring work
Main cause for refrigerant leakage is due to defect in the flaring work. Carry out correct flaring work using the follow-ing procedure.
Cut the pipes and the cable.
• Use the piping kit accessory or pipes purchased locally. • Measure the distance between the indoor and the outdoor unit. • Cut the pipes a little longer than the measured distance.
• Cut the cable 1.5m longer than the pipe length.
Check
• Compare the flared work with figure below.
• If flare is noted to be defective, cut off the flared sec-tion and re-flare it.
• Preparing the indoor unit's piping and drain hose for instal-lation through the wall.
• Remove the plastic tubing retainer(see illustration below) and pull the tubing and drain hose away from chassis. • Replace the plastic tubing holder in the original
position.(Optional)
• Carry out flaring work using flaring tool as shown below.
Burr removal
• Completely remove all burrs from the cut cross section of pipe/tube.
• Put the end of the copper tube/pipe in a downward direc-tion as you remove burrs in order to avoid dropping burrs into the tubing.
Putting nut on
• Remove flare nuts attached to indoor and outdoor unit, then put them on pipe/tube having completed burr removal. (not possible to put them on after flaring work)
Flaring work
• Firmly hold copper pipe in a die in the dimension shown in the table above.
Copper
pipe 90q Slanted Uneven Rough
Bar
Copper pipe Clamp handle
Red arrow mark Cone Yoke Handle Bar "A" Inclined
Inside is shiny without scratches Smooth all round
Even length all round Surface damaged Cracked Uneven thickness = Improper flaring = Drain hose Pipe Reamer Point down Flare nut Copper tube mm inch mm Ø6.35 1/4 0~0.5 Ø9.52 3/8 0~0.5 Ø12.7 1/2 0~0.5 Ø15.88 5/8 0~1.0 Ø19.05 3/4 1.0~1.3 Outside diameter A
Connection of piping -- Indoor
When install, make sure that the remaining parts must be removed clearly so as not to damage the pip-ing and drain hose, especially power cord and connecting cable.
Flaring work and connection of piping
Route the indoor tubing and the drain hose in the direction of rear right. Drain hose Connecting cable Vinyl tape(narrow) Connection pipe Connecting cable Vinyl tape
(wide) Wrap with vinyl tape
Indoor unit pipe
Pipe
Plastic bands Insulation material
Vinyl tape(narrow) Adhesive
Drain pipe
Indoor unit drain hose
Wrench Indoor unit tubing
Open-end wrench (fixed)
Connection pipe Flare nut
Indoor unit tubing Flare nut Pipes
Drain hose Connecting pipe Connecting cable Tape Drain hose
Insert the connecting cable into the indoor unit from the out-door unit through the piping hole.
• Do not connect the cable to the indoor unit.
• Make a small loop with the cable for easy connection later.
Tape the tubing, drain hose, and the connecting cable. Be sure that the drain hose is located at the lowest side of the bundle. Locating at the upper side can cause drain pan to overflow inside the unit.
NOTE: If the drain hose is routed inside the room, insulate
the hose with an insulation material* so that dripping from "sweating"(condensation) will not damage furniture or floors. *Foamed polyethylene or equivalent is recommended.
Indoor unit installation
• Hook the indoor unit onto the upper portion of the installa-tion plate.(Engage the two hooks of the rear top of the indoor unit with the upper edge of the installation plate.) Ensure that the hooks are properly seated on the installa-tion plate by moving it left and right.
Press the lower left and right sides of the unit against the installation plate until the hooks engage into their slots(click-ing sound).
Connecting the pipings to the indoor unit and
drain hose to drain pipe.
• Align the center of the pipes and sufficiently tighten the flare nut by hand.
• Tighten the flare nut with a wrench.
• When extending the drain hose at the indoor unit, install the drain pipe.
Wrap the insulation material around the
con-necting portion.
•Overlap the connection pipe insulation material and the indoor unit pipe insulation material. Bind them together with vinyl tape so that there is no gap.
• Wrap the area which accommodates the rear piping hous-ing section with vinyl tape.
mm inch kg.m Ø6.35 1/4 1.8 Ø9.52 3/8 4.2 Ø12.7 1/2 5.5 Ø15.88 5/8 6.6 Ø19.05 3/4 6.6
Outside diameter Torque
For right rear piping
Flaring work and connection of piping
• Bundle the piping and drain hose together by wrapping them with vinyl tape for enough to cover where they fit into the rear piping housing section.
Connecting the pipings to the indoor unit and
the drain hose to drain pipe.
• Align the center of the pipes and sufficiently tighten the flare nut by hand.
• Tighten the flare nut with a wrench.
• When extending the drain hose at the indoor unit, install the drain pipe.
Wrap the insulation material around the
con-necting portion.
• Overlap the connection pipe heat insulation and the indoor unit pipe heat insulation material. Bind them together with vinyl tape so that there is no gap.
Route the indoor tubing and the drain hose to
the required piping hole position.
Insert the piping, drain hose, and the
connect-ing cable into the pipconnect-ing hole.
Insert the connecting cable into the indoor unit.
• Don't connect the cable to the indoor unit.• Make a small loop with the cable for easy connection later.
Indoor unit installation
• Hang the indoor unit from the hooks at the top of the instal-lation plate.
• Insert the spacer etc. between the indoor unit and the installation plate and separate the bottom of the indoor unit from the wall.
Tape the drain hose and the connecting cable.
• Connecting cableDrain pipe Connecting cable
Wrap with vinyl tape
Drain hose Pipe
Vinyl tape(wide)
Indoor unit tubing Flare nut Pipes
Installation plate
Spacer Indoor unit
8cm
Plastic bands Insulation material
Vinyl tape Adhesive
Drain hose
Indoor unit drain hose (narrow)
Wrench Indoor unit tubing
Connection pipe Flare nut
Open-end wrench (fixed)
For left rear piping
mm inch kg.m Ø6.35 1/4 1.8 Ø9.52 3/8 4.2 Ø12.7 1/2 5.5 Ø15.88 5/8 6.6 Ø19.05 3/4 6.6
Outside diameter Torque
Flaring work and connection of piping
Installation Information (For left piping)
• Good caseFor left piping. Follow the instruction below. • Press on the upper side of clamp. ( ) • Wrap the area which accommodates the rear piping
hous-ing section with vinyl tape.
Indoor unit installation
• Remove the spacer.• Ensure that the hooks are properly seated on the installa-tion plate by moving it left and right.
Press the lower left and right sides of the unit against the installation plate until the hooks engage into their slots(clicking sound).
• Bundle the piping and drain hose together by wrapping them with cloth tape over the range within which they fit into the rear piping housing section.
Reroute the pipings and the drain hose across
the back of the chassis.
Set the pipings and the drain hose to the back
of the chassis with the tubing holder.
• Hook the edge of tubing holder to tap on chassis and push the bottom of tubing holder to be engaged at the bottom of chassis. Vinyl tape(narrow) Connection pipe Connecting cable Indoor unit piping Pipe Vinyl tape
(wide) Wrap with vinyl tape
Drain hose Vinyl tape(narrow) Pipe Wrap with vinyl tape(wide) Piping for passage through piping hole Tubing holder Drain hose Connecting cable
• Unfold the tubing to downward slowly. ( )
• Bend the tubing to the left side of chassis.
Flaring work and connection of piping
Align the center of the pipings and sufficiently
tighten the flare nut by hand.
Finally, tighten the flare nut with torque wrench
until the wrench clicks.
• When tightening the flare nut with torque wrench, ensure the direction for tightening follows the arrow on the wrench. • Bad case
• Following bending type from right to left could cause problem of pipe damage.
Connection of the pipes-Outdoor
mm inch kg.m Ø6.35 1/4 1.8 Ø9.52 3/8 4.2 Ø12.7 1/2 5.5 Ø15.88 5/8 6.6 Ø19.05 3/4 6.6
Outside diameter Torque
Outdoor unit
Gas side piping (Bigger diameter) Liquid side piping (Smaller diameter) Torque wrench
Connecting the cable between indoor unit and outdoor unit
Outdoor unit Terminal block Over 5mm Cover control Connecting cable Power cord Holder for power supply cordConnection of the cable
1. Remove the cover control from the unit by loosening the screw.
Connect the wires to the terminals on the control board individually as the following.
2.Secure the cable onto the control board with the hold-er (clamphold-er).
3. screw.
4.Use a recongnized circuit breaker between the power source and the unit. A disconnection device to
ade-Connect the cable to the Indoor unit.
Connecting the cable between indoor unit and outdoor unit
Connecting the cable between indoor unit and outdoor unit
The power cord connected to the outdoor unit should be complied with the following specifications
(ETL recognized and CSA certified).
The power connecting cable connected to the indoor and outdoor unit should be complied with
the following specifications.
GN/YL 20mm GN/YL 20mm GN/YL 20mm 0.75 Cable Type(B) H07RN-F NORMAL CROSS -SECTIONAL AREA Grade (mm2) T2UH182FAA T2UH242FAA 2.5 2.5 Cable Type(B) H07RN-F H07RN-F NORMAL CROSS -SECTIONAL AREA Grade (mm2) T2UH182FAA T2UH242FAA
Exploded View and Replacement Parts List
Exploded View and Replacement Parts List
342800 263230 359011 131410 135316 135311 35211B 346810 135516 354210-1 W0CZZ 267110
Indoor Unit
Service Manual 49
135515 354210-2 352111 352116 352115 26711053
Service Manual
Exploded View and Replacement Parts List
•
649950 554160 554160 349600 554031 546810 559010 447910 435301 430410 435511 W6640-1 349480 552203-1 552203-2 552203-3 552116 552111-1 W6640-2 552111-2 435512 437211 437212 268711-1 268711-2 263230P/No.:
December, 2007 Printed in China
