LG TMNC092DYAA User manual

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
Exploded View and Replacement Parts List ...........................................................................................49

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.
• There is risk of fire or electric shock.

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 property
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.
Gasolin

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
Wax
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.
90Û

Service Manual 7
Product Specifications
Product Specifications
Indoor Unit
Power Supply Ø,V,Hz
rh/utByticapaCgnilooC
yticapaCHeating
W
kcal/hr
rh/utB
W
kcal/hr
Current Normal running current A
Fan Model
Fan 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(Bd)L/M/H(leveLdnuoS
Referigerant
Referigerant Control
)hcni(mmdiuqiLnoitcennoCgnipiP
)hcni(mmsaG
)sbl(gkroodnIthgieWteN
)hcni(mmD*H*WsnoisnemiD
)hcni(mmD*H*WnoisnemiDgnikcaP
Model TMNH092DYAA TMNH122DYAA
detnuomllaWepyttinuroodnI
1Ø, 220V, 60Hz 1Ø, 220V, 60Hz
0.270.20
CFF
RP15C-1 WEILINGRP15C-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-22R-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. * mm23*2.5 3*2.5
No. * mm24*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
Dischage

Service Manual 9
Dimensions
Dimensions
Installation plate
D
H
W
mmW
mmH
mmD
Model
Dimension
Indoor Unit
TMN 122DYAATMNH092DYAA
840
270
161
840
270
161
H

10 Multi Air Conditioner
Dimensions
Outdoor Unit
Model: T2UH182FAA
W
D
L1
L2
L9
L4 L3
H
L10 L10L10
L8
L7L5L6
801mmW
555mmH
262mmD
339mm1L
37mm2L
543.6mm3L
11.4mm4L
591mm5L
105mm6L
105mm7L
72.5mm8L
74.5mm9L
79mm01L
T2UH182FAA
MODEL
DIM
Gas side
3-way valve
Liquid side
2-way valve

Service Manual 11
Dimensions
Model : T2UH242FAA
W
D
L1
L2
L9
L4 L3
H
L10 L10L10
L8
Gas side
3-Way valve
Liquid side
2-Way valve
L7L5L6
870mmW
655mmH
023mmD
073mm1L
52mm2L
630mm3L
52mm4L
645mm5L
061mm6L
061mm7L
55mm8L
80mm9L
05mm01L
T2UH242FAA
MODEL
DIM

12 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

13Service Manual
Wiring Diagram
Wiring Diagram
Indoor Unit
Outdoor Unit
T2UH242FAA.2T2UH182FAA.1
FAN
B/P1 B/P2
BC
EBY49965301
RD BRYL
2
BKWH
1
BLRD
BL
RD
WH BL
BK BL
OR BL
BL
BL
WH
TB
BC
BL
BR
BR
BR
BR
BK
EBY49965302
34
TB
LN

14 Multi Air Conditioner
Electronic Control Device
Electronic Control Device
Indoor Unit
• MAIN P.C.B ASM
• TOP VIEW
• BOTTOM VIEW

Service Manual
Electronic Control Device
Outdoor Unit
15

Multi Air Conditioner
Electronic Control Device
Display P.C.B ASM
16

Service Manual
Schematic Diagram
Schematic Diagram
Indoor Unit
42
28
15
16
22
20
19
18
17 21 26
25
23 24 27
11
12
13
14
9
8
10
34
33
32
29 30 31
38
37
36
35
41
40
39
53
55
56
58 57 54
61
63 62
64 60 59
5
4
7
6
1
3
2
49
51
52 50
44
45
43
48
46
47
FAN 12V 4WAY COMP
OUTDOOR FAN L(AC) COMP 4WAY LOAD
2. The unit of undefined capacitors is uF.
1. The unit of undefined resistance is ohm, 1/8W, 5%.
NOTE
Direct type
123
PCB outside
12
Angle type
CN-MOTOR
321
CN-4WAY
SH-CAPACITOR
22
680
33
CN-12V
2 1
1
22
1
12V
AC PART
3
TLP421(V4 BL)
IC01L
VOLTAGE GND
DC LOW
INT
4
1N4148
VOLTAGE GND
2
DC HIGH
300K 1/2W
NF01J
40mH/1A
1IN4007
1N4007
D05J
R03L 300K
1/2W
27k 1/6W
D01L
1
R02L
R01L
1N4007
5V 1N4007
D03J
C02J
100nF/275V/436D
METAL FILM
D02J
1N4007
D01J D04J
12V
INDOOR FAN
R01F
560
1/4W
100,1/2W
250V/T2A
100nF/275V/436D
C01J
METAL FILM ZNR01J
TVR10561
FUSE
RY- FAN
RY-4 WAY
34
34
TLP762JF SM1L43
T1
R03F
1/2W
5
1
2
4
IC01F
3
TR01F
TRAICS
T2
METAL FILM
100nF/275V/436D
C01F
TVR10561
120, 1/2W
R04F
ZNR01F
COMPRESSOR
11
CN-N1
RY-COMP
G4A-1A-E-LG
3
N
50/60Hz
AC220~240V
L
MOTOR
4
11
33
11 22
3
1 2
3
1
2(N)
1(L)
2
TERMINAL
5
4
5
FANMOTOR
OUTDOOR
4-WAY
4
11
2
43
5
Vout
GND
Vcc
RECEIVER
DISPLAY
C
CAB
B
KTC3198-Y
11
11
20K
(2012)
R01P
10V
2
2
HVB
33
1
CN-HVB
1
Option
HVB OUT
6
3
A0
A1
M24C01-MN6T SGS-THOMSON 8PIN SOP TRAY EEPROM IIC
EEPROM
4
SCL
SDA 5
G A2
1 2
8
Vcc
7
WP
receiver
5555
C13L
SW(FORCE)
104 2 2
11
22
11
44
33
44
3
3
R01G~R04G
1
220 1/8W
77
6 6
77
66
8 8 88
CN-DISP1
KRA107S
Q02G KRA107S
Q03G
220uF SD
Force +C12L
5V
Q01G KRA107S
5V
KID65004AF
9
IC01G
5V
5V
20K
R02P
(2012)
OR4HOR6H OR5H
Hi Med Low
OR3H OR1HOR2H
O/L F2 F1
R26H
R21H 5V
d
5V s
1
s V
d
Force
20K
R15L
5V
C08D,AXIAL
103,50V
A
V A
Vss0
Vdd0
AVref
R24H R23H
R25H 12.1K, 1%
R21H~R26H
R22H
5V
RESET AVdd
C07D,AXIAL
103,50V
X2 X1
CRTL8.00MSOT
CSTS0800MG03-T2
R01B
1M
OSC01B
2SC5343
R03G
OUTDOOR
OPERATION LED2 SLEEP
LED1
ATIMER
LED3
R02G
R01G
33
2 2
33
22
66 44
55
66
55
44
LED4
R04G 77 77
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
INT1 Vss1
INT0
B Z
Q01L
R11L,1/6W
FAN
12
4
123
16 15 14 13
2
43
5
4WAY
KID65004AF
8
7
56
91011
IC02M
1
CN-L/R
DC PART STEPPING MOTOR
(LEFT/RIGHT)
Option
1
INT
RELAY CONNECTION
CN-TH1
10K
R05H
R02H
12.1K
1%
R04H
6.2K
1%
5V
PIPE-TH
R02F
11 44 22
33
ROOM-TH
50V
5V
3
10uF
C02A
IC01A
1
3.6V
S7136
2
KIA7036P
R05L
56K
R02A,4.7K
CN-MOTOR
33
FAN
INDOOR
MOTOR
34
R12L 5.1K
receiver
680pF,50V
12K
R04L,1/6W 5V
C11L ,AXIAL
5V
PKM13EPY-4002
R02E,20
R01E
1K
BZ01E
IC01J
DMR40 EE1916S
Lp=4.50mH,+-8%,40Khz
158T
VOLTAGE GND DC LOW
+
5V
C04D
C05D
10V SD
104,AXAIL 50V
220
S78L05L 1W
I
IC01D
O7805
D01D
UF4004
ZBF503D-TA-K TDK TP 12uH L01D,IMD
1/6W
104,AXIAL
C03D R01D
4.7K
50V
100uF
C02D
25V
12V
28T
220UF
C01D
25V
SMPS
450V/SD
1N4937
DC HIGH VOLTAGE GND
100,1/6W
R02J
50V
C05J
0.1uF
100V RO1J
1/4W,1% 27K
DO6J
1uF
C04J
LNK500P
SD
C
+
10uF
C03J
NTC SCK-102
CI-B2012-100KJT R/TP 100nH
L02D
2 5
4
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
C01A
103
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
BLPKYLORRD
8
PLASMA
CHIP
RXD TXD
C03T
CHIP
R06H,1/6W,10K
C03H
2
3
1
2
3
1
CN-TH2
6.2K
R07H
1%
5V
11
33
22
77
66 55
44
CN-OPTION
GND
OR1H (PIN 33) OR2H (PIN 32) OR3H (PIN 31)
OR4H (PIN 30)
OR5H (PIN 29) OR6H (PIN 28)
C01L
AXIAL
33
CN-RF
5V 1
1
22
CHIP(104) or 10K ohm resistor C01T
R01T,1K,AXIAL
CHIP(681) C02T
1
38
6
Metal film
+
LINK SWICH CN-4WAY
CN-N2
CN-LIVE
WIRE-N
R02D
C06D,AXIAL 4.7K,1/6W
102,400V
WIRE-N
34
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
AXIAL
50V
50V
103
50V
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
OR2H
OR3H 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
0J1H0J2H
5V
OPTION : import or export operation option
R11H~R12H
20K,2012
1-4 79T 4-3 79T
R04D
0 ohm
0 ohm
R03D
C09D
open
C10D
open
Anti Surge Res.
Anti Surge Res.
Anti Surge Res.
17

Schematic Diagram
18 Multi Air Conditioner

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
19

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
20