LG TN-C090BT00 User manual

Ducted Split
Air Conditioner
SERVICE MANUAL
MODELS:
TN-C090BT00
TN-C120BT00
TN-C180BT00
TN-C240BT00

Contents
Model Number Nomenc lature
Model Number Nomenc lature ...............................................................................................2
General Data ..........................................................................................................................3
Dimensions ............................................................................................................................5
Wiring Dia gram ......................................................................................................................6
Troub leshooting Guide .........................................................................................................7
Features of Contr oller .........................................................................................................18
Exploded View and Replacement Parts List .....................................................................23
Development Sequence
C: Cooling Only
H: Heat Pump
S: Side Discharge
Outdoor Fan Discharge
Cooling Capacity
TN: LGETA Ducted Split Air Conditioner
Type of Air Conditioner
Model Type
8 : 380-415V / 50Hz / 3
Ø
Electric Standard (Volts / Freq. / Phase)
090B : 88,000 Btu/h
T: Top Discharge
TN C09 0 BT 0 0
-
2
A(0): Gold Fin
B: Basic
Model Type
A: 3/4/5RT 0:Over 5RT
B : 380-415V / 60Hz / 3 Ø
120B : 118,000 Btu/h
240B : 180,000 Btu/h
240B : 230,000 Btu/h

General Data
List of Functions
Notes:
:No relation:Not applied:Applied - ×
* Option : Model name & price are different according to options, and assembled in factory with main unit.
* Accessory : Installed at field, ordered and purchased separately by the corresponding model name, supplied with separate package.
3
Features Model No. TN-C090BT00 TN-C120BT00
Cooling & Fan Operation O O
Auto Restart Operation - -
Wired Remote Control O O
Group Control - -
Child Lock Function - -
Self Diagnosis Function - -
Weekly Program - -
Time Delay Relay O O
Two Thermistor Control - -
Central Control - -
Zone Control - -
Energy Saving Gold Fin - -
Wireless Remote Control - -
Electric Heater Accessory Accessory
Fire Alarm Function - -
Electronic Thermostat - -
Low Pressure Switch O O
High Pressure Switch O O
Phase Protection O O

Notes:
:Not applied:Applied -
* Option : Model name & price are different according to options, and assembled in factory with main unit.
* Accessory : Installed at field, ordered and purchased separately by the corresponding model name, supplied with separate package.
Features TN-C240BT00TN-C180BT00
Cooling & Fan Operation O
O
O
O
O
O
O
O
O
noitarepOtratseRotuA
Wired Remote Control
lortnoCpuorG
noitcnuFkcoLdlihC
noitcnuFsisongaiDfleS
-
margorPylkeeW
Time Delay safety
Two Thermistor Control
Central Control
Zone Control
Energy Saving Gold Fin
-
-
-
lortnoCetomeRsseleriW
Electric Heater
Fire Alarm Function
Electronic Thermostat
hctiwSerusserPwoL
High Pressure Switch
Phase Protection
Model No.
O
Option
O
-
-
-
O
O
O
O
O
O
O
O
O
O
-
-
-
-
Option
O
-
-
-
O
General Data
4

General Data
Note : 1. Capacities are based on the following conditions:
Cooling: - Indoor Temperature 26.7ć(80΃) DB/19.4ć(67΃)WB
- Outdoor Temperature 35ć(95΃)DB/24
ć(75.2΃)WB
Piping Length - Interconnecting Piping Length 7.5m
'- Level Difference of Zero
2. Nominal CFM : Fan operation mode with clean filter, dry coil.
3. The specification may be subject to change without prior notice for purpose of improvement.
Conversion Formula
kcal/h = kW x 860
Btu/h = kW x 3412
cfm = m 3/min x 35.3
5
(RT) 7.5 10
TN-C090BT00 TN-C120BT00
Btu/h 90,600 122,094
kcal/h
(
W
)
22,836˄26,553˅30,774˄35,784˅
Btu/h 88,000 118,000
kcal/h
(
W
)
22,180
(
25,791
)
29,742
(
34,583
)
V,PH,Hz 220-240 ,3,60 220-240 ,3,60
M.C.A(with standard
motor) Cooling Amps 40 51
Power In
p
ut Coolin
g
W11 13,500
Air Circulation Nominal CFM CFM 3000 4,000
EER Coolin
g
Btu/h.W 8.98 8.43
SEER Coolin
g
Btu/h.W
bell 6.3 6.3
T
yp
eHi
g
h efficienc
y
Hi
g
h efficienc
y
inch 3/8 9/32
mm 9.52 7.0
2R / 24C / 17FPI 3R / 29C / 17FPI
inch 55 1/8 55 1/8
mm 1,400 1,400
s
q
.ft 9.19 9.19
΃0.85 0.85
T
yp
eCentrifu
g
al Blower Centrifu
g
al Blower
No. Used 1EA 1EA
Diameter
(
Width
)
inch 12.7
(
15
)
12.7
(
15
)
Pully /1 Pully /1
No.motors 1EA 1EA
H
p
1 / N.A 1 / N.A
H
p
1030 / N.A 1030 / N.A
22
11
T
yp
eScroll Scroll
Quantit
y
22
C-SB303H6B SR061R
SANYO LG
kcal/h(Btu/h) 14,400
(
49,133
)
14,400
(
49,133
)
Three Phase Three Phase
W 4,400 5,100
Oil T
yp
eSAY56T SUNISO 4GSI
Oil Char
g
e cc 1,700 1,950
T
yp
eHi
g
h efficienc
y
Hi
g
h efficienc
y
inch 9/32 9/32
mm 7 7
Row / Column / FPI
2R / 36C / 17FPI * 2EA 2R / 17C /17FPI *
2EA
2R / 36C / 17FPI * 2EA 2R / 17C /17F3 ,
2EA
inch 27.6 27.6
mm 700 1170
s
q
.ft 16.2 27
΃1.55 2.58
T
yp
ePro
p
eller Pro
p
eller
No. Used / Diameter
(
inch
)
1EA / 18 1/8 1EA / 18 1/8
Drive T
yp
eDirect Direct
CFM --
Side / Top To
p
To
p
No. Motor / Motor
output(Hp) 1EA / 0.1 2EA / 0.1
Motor RPM 1050 1050
inch
(
mm
)
1/2
(
12.7
)
3/4
(
19.05
)
inch
(
m
)
295 9/32
(
7.5
)
295 9/32
(
7.5
)
Ɛ/h 5.6 5.6
1 1/4 1 1/4
k
g
2.9*2 3.5*2
lbs 6.39*2 7.72*2
T
yp
eR22 R22
Ca
p
illar
y
Tube Ca
p
illar
y
Tube
inch 69 1/8 *36 1/32 * 33 1/16 69 1/8 *36 1/32 * 33 1/16
mm 1760 *890 * 840 1760 *890 * 840
inch 33 3/8 * 61 5/8*29 1/8 52 3/8 * 61 5/8 * 29 1/8
mm 855 * 1570 *740 1330 * 1570 * 740
kg 190 190
lbs 418 418
kg 140 300
lbs 308 661
Stuffing Quantity Without S/Parts INDOOR /OUTDOOR(20ft / 40ft / 40ft HI) 12/24/39 19/42/42 12/24/39 12/25/25
Drive Type / Motor Step
Motor output(standard / oversized)
Motor rpm(Standard / oversized)
Nominal RT
Models
Electrical Data
Power Supply
Capacity
Gross Cooling Capacity
Net Cooling Capacity
Performance
Sound Rating
Indoor Coil
Tube size(O.D)
Length
Face area
Row / Column / FPI
Indoor Fan
No of Outdoor Units
Compressor
Outdoor Coil
Tube size(O.D)
Length
Face area
Model
Maker
Capacity
Length(Standard)
Outdoor Fan
Service Valve Liquid
Gas
Discharge
Net Weight
Indoor unit
Outdoor unit
Drain Connection Size(inch)
Refrigerant Refrigerant Charge
Refrigerant Control
No of System Cycles
Dimensions
Indoor unit (W * H * D)
Outdoor unit (W * H * D)
Dehumidification Rate
Connecting Tube
Liquid
Gas
Motor Type
Motor Input
--
inch(mm)
inch(mm)
inch(mm)
1/2(12.7)
3/4(19.05)
1/2(12.7)
3/4(19.05)
1/2(12.7)
3/4(19.05)

Note : 1. Capacities are based on the following conditions:
Cooling: - Indoor Temperature 27.0 (80.6°F ) DB/19.0 (66.2°F) WB
- Outdoor Temperature 35 (95°F) DB/24 (75.2°F) WB
Piping Length - Interconnecting Piping Length 7.5m
'- Level Difference of Zero
2. Nominal CFM : Fan operation mode with clean filter, dry coil.
3. The specification may be subject to change without prior notice for purpose of improvement.
Conversion Formula
kcal/h = kW x 860
Btu/h = kW x 3412
cfm = m 3/min x 35.3
(RT) 20
TN-C240BT00
kW 53.54 70.41
Btu/h 182 700 240 239
kW 52.75 67.41
Btu/h 180 000 230 000
kW - -
Btu/h - -
Ø / V / Hz 3/220ѝѝ
Cooling A 76
Heating A - -
Cooling W 22 000 2
Heating W - -
CFM 5 300 7 500
Btu/h.W 8.18 9.02
Btu/h.W - -
W/W - -
bell+3 67 6
bell+3
High efficiency High efficiency
mm(inch) 9.52(3/8) 9.52(3/8)
3R / 30C / 17FPI 3R / 30C / 17FPI
mm(inch) 1500(59 17/32) 1500(59 17/32)
༇
(
s
q
.ft
)
1.14(12.33) 1.14(12.33)
Centrifugal Blower Centrifugal Blower
mm(inch) 393(15 15/32) 393(15 15/32)
mm(inch) 557(21 15/16) 557(21 15/16)
WEITELI WEITELI
Belt/1 Belt/1
11
Hp 4.0/6.0 4.0/6.0
1 0/ 1 0 1 0/ 1 0
11
SCROLL * 4 SCROLL * 4
Btu/h 49 500 62 000
W 4625 5538
SUNISO 4GSI SUNISO 4GSI
cc 1800 1950
High efficiency High efficiency
mm(inch) 9.52(3/8) 9.52(3/8)
3R / 40C / 14FPI*2 3R / 40C / 14FPI*2
mm(inch) - -
༇
(
s
q
.ft
)
0.50 0.50
Propeller * 2 Propeller * 2
inch - -
--
Direct Direct
CFM 8200 8200
Hp 2EA / 1.5 2EA / 1.5
90 90
mm(inch) 15.88(5/8) 15.88(5/8)
mm(inch) 28(9/8) 28(9/8)
mm(inch) 15.88(5/8) 15.88(5/8)
mm(inch) 28(9/8) 28(9/8)
m(inch) 7.5(295 9/32) 7.5(295 9/32)
˜
/h 17 17
1 1/4 1 1/4
kg 7.5*2 7.6*2
lbs - -
Type R22 R22
Capillary Tube Capillary Tube
mm 1800*890*1000 1800*890*1000
inch 70 7/8* 35 3/8 *39 3/8 70 7/8* 35 3/8 *39 3/8
mm 1560*1100*880 1760*1100*970
inch 61 7/16* 43 5/16 * 34 5/8 69 1/4* 43 5/16 * 38 3/16
kg(lbs) 250˄550˅250˄550˅
kg(lbs) 340(748) 340(748)
--
inch - -
Outdoor Unit or S/Package
Dimensions
Indoor Unit (W * H * D)
Refrigerant Refrigerant Charge
Refrigerant Control
Service Valve Liquid
Gas
Outdoor Motor
No. Motor / Motor Output(Hp)
Air Circulation
Drive Type
Maker
Outdoor Fan Type * No. Used
Diameter
Length
Face Area
Tube Size(O.D)
Rows / Column / FPI
No. of Outdoor Units
Motor Output(Standard / Oversized)
No. Motors
Drive Type / Motor Step
Width
Indoor Fan
Type * No. Used
Length
Tube Size(O.D)
Sound Rating˄outdoor˅
Sound Rating˄indoor˅
SEER
Performance
Air Circulation(Nominal)
COP
EER
Power Input
M.C.A
(with Standard Motor)
TN-C180BT00
15
Outdoor Unit
(W * H * D)
Net Weight Indoor Unit
Fliter Size * No. Used
Filter Rack Thickness
Length(Standard)
Connecting Pipe
Motor RPM
Compressor
Motor Input
Oil Type
Oil Charge
Condenser
Drain Connection Size(inch)
Liquid
Gas
Dehumidification Rate
Type
Type * Quantity
Model
Maker
Capacity
Motor Type
Electrical Data
Power Supply
Indoor Motor
Maker
Diameter
Evaporator
Type
Rows / Column / FPI
Face Area
Motor RPM(Standard / Oversized)
Nominal RT
Models
Gross Cooling Capacity
Net Cooling Capacity
Capacity
Net Heating Capacity
9
75 75
240/60 3/220 240/60
SR049RAC SR061RBA
LG LG
One Phase One Phase
140
5 500
72 73 72 73
77
General Data
6

Dimensions
7
Model No.: TN-C120BT00
0.53 ˄098 ˅
69.3˄1760˅
33.0˄840˅
52.4(1330)
29.1(740)
)0751(8.16
Model No.: TN-C120BT00
0.53 ˄098 ˅
69.3˄1760˅
33.0˄840˅
52.4(1330)
29.1(740)
)0751(8.16

1. Indoor units
2. Oudoor units
Model No.: TN-C180BT00
Note: All dimensions are in mm
098
1800
1000
1100
1560
880
Dimensions
8

1. Indoor units
2. Oudoor units
Model No.: TN-C240BT00
Note: All dimensions are in mm
098
1800
1000
1100
1760
970
Dimensions
9

Wiring Diagrams
Model No.:TN-C090BT00
Model No.:TN-C120BT00
EGNAROROKCALBKBYALERYR
DERDRNWORBRBWOLLEYLY
WOLLEY/NEERGLY/NGEULBLBETIHWHW
GNIRIWDLEIFGNIRIWLANOITPOGNIRIWYROTCAF
Notes:
WOLLEYLYEGNAROROKCALBKB
ETIHWHWDERDRNWORBRB
ROSSERPMOCPMOCWOLLEY/NEERGLY/NGEULBLB
GNIRIWDLEIFGNIRIWLANOITPOGNIRIWYROTCAF
Notes:
10

Model No.:TN-C180BT00
11
Wiring Diagrams

Model No.:TN-C240 T00B
MEZ62337701
12
Wiring Diagrams

Troubleshooting Guide
Ineffective Cooling
Check of outdoor coil
(heat exchanger) & the fan
operation.
Check gas leakage.
Repair gas leak.
Replacement of unit if the
unit is beyond repair.
Satisfactory operation with
temperature difference of
inlet & outlet air ;
COOLING : 7~10 ʚ C
Check heat load increase in
cooling operation.
Unexpected residue
Added electrical utencil
Check of inside gas
pressure.
Adjust refrigerant
charge.
Malfunction of compressor.
Replacement of
compressor
Check of cold air cir-
culation for smooth flow.
Dirty indoor coil
(heat exchanger.)
Malfunction of fan.
Clogging of air filter.
Obstruction at air outlet.
Countermeasure against
above trouble.
Check clogging in refrigera-
tion circuit.
Repair clogging in refrigera-
tion circuit.
In general, possible trouble is classified in two causes.
The one is called Starting Failure which is caused from an electrical defect, and the other is Ineffective Air
Conditioning caused by a defect in the refrigeration circuit and improper application.
Unit runs but ineffective cooling
13

Troubleshooting Guide
Fails to Start
Check of circuit breaker
and fuse.
Check control switch.
Fan only fails to start.
Improper wiring.
Defect of fan motor
capacitor.
Defect of compressor
capacitor.
Irregular motor resistance
( )
Irregular motor insulation
( )
Replacement of fan motor.
Regular but fails to start.
Replacement of compressor.
Loose terminal connection.
Improper wiring
Irregular motor resistance ( )
Irregular motor insulation ( )
Replacement of compressor
Drop of power voltage.
Capacitor check.
Replacement of capacitor.
Compressor only fails to
start.
Check power source.
Check control switch
setting.
ē
ē
ē
ē
14

Troubleshooting Guide
VOLTAGE LIMITS
1. No cooling and heating operation performed
1) Both the blower and the compressor do not work
NAME PLATE RATING MINIMUM MAXIMUM
380 - 415 V 342 V 456 V
2) Only Indoor blowers do not work
WHAT TROUBLED COMPLAINTS HOW TO CHECK REMEDY
Other parts except the
unit
Magnetic switch for com-
pressor & fan motor
Operating switch
Electric supply interrupted
Defective power wiring
Cut off power fuse
Too low voltage
Control point is on condi-
tion of "OFF" due to trou-
ble.
Troubled or defective
contactor
Measure power sypply
with a tester in case that
the same power source is
supplied to other equip-
ment except the unit,
what and where troubled
can be discovered by
checking the operation of
other equipment.
Measure it with a tester.
Make short-circuit, then
measure it with tester.
Check it with the eyes or
tester.
Repair a switch box and
relative instrument.
Replacement of fuse
Request a power
supplier to repair.
Check the power source.
Use a thick cable if nec-
essary.
Replace it if necessary.
Repair or replace it.
WHAT TROUBLED COMPLAINTS HOW TO CHECK REMEDY
Motor
Capacitor
Electric wiring
Over heated
Wiring short
Defected
Cut- OFF of wiring
Short circuited on
operation
Check it with tester
Check it with a tester.
Check it with a tester.
Repair or replace it.
Replace it.
Rewiring or Repair.
15

Troubleshooting Guide
3) Only outdoor fan does not work
WHAT TROUBLED COMPLAINTS HOW TO CHECK REMEDY
Motor
Electric Wiring
Over-heated
Wire short
Cut off of wiring
Short circuited on
operation
Check how it is insulated.
Check it with a tester.
Repair or replace it.
Rewiring or repair.
4) Only compressor does not work
WHAT TROUBLED COMPLAINTS HOW TO CHECK REMEDY
Magnetic switch for
compressor motor
Compressor motor
High pressure switch
Electric circuit
Defective contact,
magnetic coil troubled.
Troubled over-heated
(layer short)
Troubled or defective
contact or operating
Defective connection or
disconnection of the circuit
for compressor.
Check it with the eyes on
with a tester.
Check how it is insulated.
Check it with a tester.
Check it with a tester.
Repair or replace it.
Replace or repair the
compressor.
Replace it if neces-
sary.
Rewiring or push reset
button.
16

Troubleshooting Guide
Note: Use an appropriate measuring instrument for readjustment.
*1: High-pressure switch moves.
2. The Units discontinue after the operation started
WHAT TROUBLED COMPLAINTS HOW TO CHECK REMEDY
Outdoor coil
In-condensable gas
blended.
High pressure switch
(Option part)
Refrigerant
Outdoor Fan
Coil is dirty *1
Air intruded into the
refrigerant pipe line *1
Improper adjustment
A shortage of refrigerant
amount.
Check pressure
Reverse rotation of fan
Obstacle
Air short circuit *1
Checking
In the event that
difference between the
saturating temperature
corresponding to high
pressure and the
temperature of air
discharged from the
outdoor coil is more than
15 C, incondensable gas
may be blended.
Check it with a pressure
gauge.
Confirm the wind blowing
out upward.
Check it with eyes.
Wash it by means of
something like chemical
washing.
Extract air by vacuum
pump, then replenish
(charge) the refrigerant.
Read just it to normal
operating pressure.
(Note)
Don't alternate the
specified adjusting
pressure. If the adjusted
pressure exceed the
specified range, it will
cause a great accident.
Replenish the
refrigerant. Repair the
spot where it is leaked.
If reversed, connect
interchanged wires to
each terminal.
Power wirings.
17
ʚ

Troubleshooting Guide
3. The unit is working, but not cooling and heating sufficiently
(Both blower and compressor are working)
WHAT TROUBLED COMPLAINTS HOW TO CHECK REMEDY
Load
Air flow
Short air volume
Refrigerant
Air passage
Air filter
Much Cooling or Heating
load
Obstacle disturbs Intake
of uniform airflow.
Reverse rotation of
blower.
Shortage in the charged
refrigerant.
Improper or foreign bodies
Clogged with dust
Heat load increased.
Window or door has many
cracks or gaps.
Checking
Checking
Coil inlet pipe is frosted
Checking
Checking
Do necessary disposal
respectively.
Correct it.
Correct it.
Recharge it.
(Repair the leakage spot).
Correct or clear the
foreign bodies.
Cleaning
4.
All the functions are performed as specified, but very noisy and vibrant
WHAT TROUBLED COMPLAINTS HOW TO CHECK REMEDY
Compressor
Blower
Screws
Electric troubles
(Magnetic contactor)
Others
Checking
Checking
Checking
Checking
Improper installation Checking
Replace the
compressor
Repair or replace it.
Clear the foreign bodies.
Correct
Repair and clean or
replace it.
Correct it.
Liquid refrigerant flooding
back from the evaporator.
Faulty Discharge valve
and suction valve.
Fan broken.
Foreign matters intruded.
Looseness or fail-off of
screws
Defective contact.
Defective contact point.
Rusting and foreign mat-
ters in the iron core con-
tact face. Defective con-
tact of the
operating switch.
Check for refrigerant over-charge.
Check to see if the intake air temperature is
extremely cold.
Check for insufficient air flow quantity.
18

Electronic parts Troubleshooting Guide
YES
YES
YES
NO
YES
Is the input voltage of
transformer AC220V?
Is the output voltage
of IC02D(7805) on the
main PCB DC5V?
1. Check the Fuse.
2. Check the wiring of AC220V.
Is the output voltage
of IC01D(7812 ) on the
main PCB DC12V?
OSC vibration?
1. Exchange main PCB ASS'Y
1. Exchange remote-controller
2. Check or exchange the Main
PCB ASS'Y.
YES
NO
1. Exchange the transformer.
2. Check the connector of
transformer.
NO
NO
1. Exchange IC02D(7805) on
the main PCB.
2.
Check the D01D~D05D, R05C
on the main PCB.
NO
YES
Is the output voltage
of IC01A(7036) on the
main PCB DC5V?
NO
1. Exchange IC01D(7812) on
the main PCB.
2. Check the D01D~D05D,
R05C on the main PCB.
1. Exchange IC01A(7036) on
the main PCB.
Is the output voltage of
transformer AC24V & AC13V?
1. Exchange OSC.
2. Check the pattern around
OSC on the main PCB.
Is the input voltage
of remote-controller
DC12V?
YES
NO
YES
Is the power ON?
NO
1. Exchange or exchange FUSE.
2. Check the input voltage of
Main PCB ASS'Y.
1. Check or exchange the IC01D
on the Main PCB.
2. Check or exchange the
Connector (RED, BROWN)
of the remote controller.
Possible trouble 1 : The unit does not operate.
Possible trouble 2 : The remote-controller does not operate.
19

Electronic parts Troubleshooting Guide
YES
NO
YES
NO
NO
Is the connection between
MAIN PCB and remote-controller
correct?
Is there Check(F**) on
the remote controller LCD?
1.
Check or repair Connector wiring.
2. Exchange the Connector.
Is the input power voltage of
remote-controller DC12V?
Do Keys have troubles?
Exchange remote-controller.
Exchange remote-controller.
NO
YES
1. Replace the pressed key.
2. Exchange the Knob or Key.
YES
NO
1. Remove cause of Check.
2. Reenergize the power supply.
YES
YES
Is there OSC vibration on
the remote-controller PCB?
NO
1. Check or exchange IC01D
(7812) on the MAIN PCB.
1. Exchange OSC
2.
Check the pattern around OSC
on the remote-controller PCB.
Is any key on the remote-controller
keeping pressed?
1. Check Keys.
2. Repair or exchange Key.
Is there trouble in the
remote-controller PCB
ASS'Y?
NO
YES
NO
Are there trouble in
LCD parts?
YES
1. Check crack, damage of LCD.
2. Check LCD pattern.
1. Check or repair all IC with
dust or moisture on the PCB.
2. Exchange remote-controller
PCB.
Possible trouble 3 : Key input of remote-controller does not respond.
Possible trouble 4 : LCD display on the remote-controller shows some trouble.
20