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

Contents 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

Model Number Nomenc lature T N - C 0 9

0 B T 0 0 Development Sequence Model Type A(0): Gold Fin A: 3/4/5RT

0:Over 5RT

B: Basic Outdoor Fan Discharge

S: Side Discharge T: Top Discharge Electric Standard (Volts / Freq. / Phase) 8 : 380-415V / 50Hz / 3Ø B : 380-415V / 60Hz / 3Ø Cooling Capacity 090B : 88,000 Btu/h 120B : 118,000 Btu/h 240B : 180,000 Btu/h 240B : 230,000 Btu/h Model Type C: Cooling Only H: Heat Pump Type of Air Conditioner TN: LGETA Ducted Split Air Conditioner 2

General Data List of Functions Features Model No.

TN-C090BT00

TN-C120BT00

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

-

-

Accessory

Accessory

Fire Alarm Function

-

-

Electronic Thermostat

-

-

Low Pressure Switch

O

O

High Pressure Switch

O

O

Phase Protection

O

O

Cooling & Fan Operation

Electric Heater

Notes: :Applied

- :Not applied

× :No relation

* 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

General Data

Model No.

TN-C180BT00

TN-C240BT00

Cooling & Fan Operation

O

O

Auto Restart Operation

O

O

Wired Remote Control

O

O

Group Control

-

-

Child Lock Function

O

O

Self Diagnosis Function

O

O

W eekly Program

O

O

Time Delay safety

O

O

Two Thermistor Control

-

-

Central Control

-

-

Zone Control

-

-

Energy Saving Gold Fin

O -

O -

Option -

Option -

-

-

Low Pressure Switch

O

O

High Pressure Switch

O

O

Phase Protection

O

O

Features

W ireless Remote Control Electric Heater Fire Alarm Function Electronic Thermostat

Notes: O :Applied

- :Not 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.

4

General Data Nominal RT

(RT)

Models Btu/h kcal/h(W) Btu/h kcal/h(W) V,PH,Hz

Gross Cooling Capacity Capacity Net Cooling Capacity Power Supply Electrical Data

Performance

M.C.A(with standard motor) Power Input Air Circulation EER SEER Sound Rating Type

Cooling Cooling Nominal CFM Cooling Cooling

Indoor Coil

Indoor Fan

Type No. Used Diameter ( Width ) Drive Type / Motor Step

40

51 13,500 4,000 8.43 -

6.3 High efficiency 3/8 9.52 2R / 24C / 17FPI 55 1/8 1,400 9.19 0.85 Centrifugal Blower 1EA 12.7 (15) Pully /1 1EA 1 / N.A 1030 / N.A 2 1 Scroll 2 C-SB303H6B SANYO 14,400(49,133) Three Phase 4,400 SAY56T 1,700 High efficiency 9/32 7

6.3 High efficiency 9/32 7.0 3R / 29C / 17FPI 55 1/8 1,400 9.19 0.85 Centrifugal Blower 1EA 12.7 (15) Pully /1 1EA 1 / N.A 1030 / N.A 2 1 Scroll 2 SR061R LG 14,400(49,133) Three Phase 5,100 SUNISO 4GSI 1,950 High efficiency 9/32 7

2R / 36C / 17FPI * 2EA 2R / 17C /17FPI * 2EA

2R / 36C / 17FPI * 2EA 2R / 17C /17F3 , 2EA

27.6 700 16.2 1.55 Propeller 1EA / 18 1/8 Direct Top

27.6 1170 27 2.58 Propeller 1EA / 18 1/8 Direct Top

1EA / 0.1

2EA / 0.1

1050 1/2(12.7) 3/4(19.05) 1/2(12.7) 3/4(19.05) 295 9/32(7.5) 5.6 1 1/4 2.9*2 6.39*2 R22 Capillary Tube 69 1/8 *36 1/32 * 33 1/16 1760 *890 * 840 33 3/8 * 61 5/8*29 1/8 855 * 1570 *740 190 418 140 308 12/24/39 19/42/42

1050 1/2(12.7) 3/4(19.05) 1/2(12.7) 3/4(19.05) 295 9/32(7.5) 5.6 1 1/4 3.5*2 7.72*2 R22 Capillary Tube 69 1/8 *36 1/32 * 33 1/16 1760 *890 * 840 52 3/8 * 61 5/8 * 29 1/8 1330 * 1570 * 740 190 418 300 661 12/24/39 12/25/25

inch

No.motors Motor output(standard / oversized) Motor rpm(Standard / oversized)

Hp Hp

No of System Cycles No of Outdoor Units

Compressor

Type Quantity Model Maker Capacity Motor Type Motor Input Oil Type Oil Charge Type Tube size(O.D)

Outdoor Coil

Face area

Outdoor Fan

Service Valve

Connecting Tube

Type No. Used / Diameter(inch) Drive Type CFM Discharge No. Motor / Motor output(Hp) Motor RPM Liquid Gas Liquid Gas Length(Standard)

Dehumidification Rate Drain Connection Size(inch)

Refrigerant

kcal/h(Btu/h) W cc inch mm

Row / Column / FPI Length

Refrigerant Charge

inch mm sq.ft ΃

Side / Top

inch(mm) inch(mm) inch(mm) inch(mm) inch(m) Ɛ /h kg lbs Type

Refrigerant Control Indoor unit (W * H * D) Dimensions Outdoor unit (W * H * D) Indoor unit Net Weight Outdoor unit Stuffing Quantity

Without S/Parts

122,094 30,774˄35,784˅ 118,000 29,742(34,583) 220-240 ,3,60

11 3000 8.98 -

inch mm sq.ft ΃

Face area

90,600 22,836˄26,553˅ 88,000 22,180(25,791) 220-240 ,3,60

W CFM Btu/h.W Btu/h.W bell

Row / Column / FPI Length

10 TN-C120BT00

Amps

inch mm

Tube size(O.D)

7.5 TN-C090BT00

inch mm inch mm kg lbs kg lbs INDOOR /OUTDOOR(20ft / 40ft / 40ft HI)

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/24ć(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.

5

Conversion Formula kcal/h = kW x 860 Btu/h = kW x 3412 cfm = m 3 /min x 35.3

General Data Nominal RT

(RT)

Models Gross Cooling Capacity Capacity

Net Cooling Capacity Net Heating Capacity

Electrical Data

Power Input

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

3/220ѝ240/60 140

Ø / V / Hz Cooling

A

76

Heating

A

-

-

Cooling

W

22 000

25 500

Heating

W

-

-

CFM

5 300

7 500

EER

Btu/h.W

8.18

9. 02

SEER

Btu/h.W

-

-

COP

W/W

-

-

Sound Rating˄indoor˅ Sound Rating˄outdoor˅

bell+3

67

69

bell+3

75

75

High efficiency

High efficiency

Air Circulation(Nominal)

Performance

Type Tube Size(O.D) Evaporator

mm(inch)

Rows / Column / FPI

1500(59 17/32)

༇(sq.ft)

1.14(12.33)

1.14(12.33)

Centrifugal Blower

Centrifugal Blower

Diameter

mm(inch)

393(15 15/32)

393(15 15/32)

Width

mm(inch)

557(21 15/16)

557(21 15/16)

WEITELI

WEITELI

Belt/1

Belt/1

No. Motors Motor Output(Standard / Oversized)

Hp

Motor RPM(Standard / Oversized) No. of Outdoor Units Model

SR049RAC LG

SR061RBA LG

Capacity

Btu/h

Motor Type

Tube Size(O.D)

W cc mm(inch)

Rows / Column / FPI Length Face Area

mm(inch) ༇(sq.ft)

Type * No. Used Diameter

inch

Maker Drive Type Air Circulation

5538 SUNISO 4GSI

1800

1950

High efficiency

High efficiency

9.52(3/8)

9.52(3/8)

3R / 40C / 14FPI*2

3R / 40C / 14FPI*2

-

-

0.50

0.50

Propeller * 2

Propeller * 2

-

-

-

-

Direct

Direct 8200

2EA / 1.5

2EA / 1.5

970

970

Liquid

mm(inch)

15.88(5/8)

15.88(5/8)

Gas

mm(inch)

28(9/8)

28(9/8)

Liquid

mm(inch)

15.88(5/8)

15.88(5/8)

Gas

mm(inch)

28(9/8)

28(9/8)

m(inch) ˜/h

7.5(295 9/32)

7.5(295 9/32)

Dehumidification Rate Drain Connection Size(inch) Refrigerant Charge

Indoor Unit (W * H * D) Outdoor Unit (W * H * D)

17

17

1 1/4

1 1/4 7.6*2

kg

7.5*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

69 1/4* 43 5/16 * 38 3/16 250˄550˅

Refrigerant Control

Fliter

4625 SUNISO 4GSI

Hp

Length(Standard)

Net Weight

62 000 One Phase

8200

Motor RPM

Dimensions

49 500 One Phase

CFM

No. Motor / Motor Output(Hp)

Refrigerant

1720/ 1730 1

Type

Connecting Pipe

1720/ 1730

SCROLL * 4

Oil Charge

Service Valve

4.0/6.0

SCROLL * 4

Oil Type

Outdoor Motor

1

4.0/6.0

Type * Quantity

Motor Input

Outdoor Fan

1

1

Maker

Condenser

1500(59 17/32)

mm(inch)

Drive Type / Motor Step

Compressor

9.52(3/8) 3R / 30C / 17FPI

Face Area

Maker Indoor Motor

9.52(3/8) 3R / 30C / 17FPI

Length Type * No. Used Indoor Fan

20 TN-C240BT00

3/220ѝ240/60

Power Supply M.C.A (with Standard Motor)

15 TN-C180BT00

Indoor Unit

kg(lbs)

61 7/16* 43 5/16 * 34 5/8 250˄550˅

Outdoor Unit or S/Package

kg(lbs)

340(748)

340(748)

-

-

-

-

Size * No. Used Filter Rack Thickness

inch

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.

6

Conversion Formula kcal/h = kW x 860 Btu/h = kW x 3412 cfm = m 3 /min x 35.3

Dimensions Model No.: TN-C120BT00

69

˅

35.0˄890˅

60

61.8(1570)

.3˄ 17

0˅

4 ˄8 3.0

3

52.4(

0)

74

( 9.1

1330

)

2

Model No.: TN-C120BT00

69

˅

35.0˄890˅

60

61.8(1570)

.3˄ 17

0˅

4 ˄8 3.0

3

52.4(

7

0)

74

1330

)

2

( 9.1

Dimensions Model No.: TN-C180BT00 1. Indoor units

18

890

00

00

10

1100

2. Oudoor units

156

0

0

88

Note: All dimensions are in mm

8

Dimensions Model No.: TN-C240BT00 1. Indoor units

18

890

00

00

10

1100

2. Oudoor units

176

0

0

97

Note: All dimensions are in mm

9

Wiring Diagrams Model No.:TN-C090BT00

Notes: RY YL WH

RELAY YELLOW WHITE FACTORY WIRING

BK BR BL

BLACK BROWN BLUE OPTIONAL WIRING

OR RD GN/YL

ORANGE RED GREEN/YELLOW FIELD WIRING

Model No.:TN-C120BT00

Notes: BK BR BL

BLACK BROWN BLUE FACTORY WIRING

OR RD GN/YL

ORANGE RED GREEN/YELLOW OPTIONAL WIRING

10

YL WH COMP

YELLOW WHITE COMPRESSOR FIELD WIRING

Wiring Diagrams Model No.:TN-C180BT00

11

Wiring Diagrams

MEZ62337701

Model No.:TN-C240BT00

12

Troubleshooting Guide 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

Ineffective Cooling

Check of cold air circulation for smooth flow.

Check of outdoor coil (heat exchanger) & the fan operation.

Dirty indoor coil (heat exchanger.)

Check gas leakage.

Check heat load increase in cooling operation.

Unexpected residue

Added electrical utencil Malfunction of fan.

Repair gas leak.

Clogging of air filter.

Replacement of unit if the unit is beyond repair.

Obstruction at air outlet.

Check of inside gas pressure.

Adjust refrigerant charge.

Countermeasure against above trouble. Malfunction of compressor. Check clogging in refrigeration circuit.

Repair clogging in refrigeration circuit.

Satisfactory operation with temperature difference of inlet & outlet air ; ʚ COOLING : 7~10 C

13

Replacement of compressor

Troubleshooting Guide Fails to Start

Check power source.

Check of circuit breaker and fuse.

Check control switch setting.

Check control switch.

Compressor only fails to start.

Fan only fails to start.

Improper wiring. Drop of power voltage.

Defect of compressor capacitor.

Loose terminal connection.

Improper wiring

Defect of fan motor capacitor.

Irregular motor resistance (ē) Irregular motor insulation (ē)

Capacitor check.

Replacement of capacitor. Replacement of fan motor.

Irregular motor resistance ( ē )

Regular but fails to start.

Irregular motor insulation ( ē ) Replacement of compressor. Replacement of compressor

14

Troubleshooting Guide VOLTAGE LIMITS NAME PLATE RATING

MINIMUM

MAXIMUM

380 - 415 V

342 V

456 V

1. No cooling and heating operation performed 1) Both the blower and the compressor do not work WHAT TROUBLED Other parts except the unit

COMPLAINTS

HOW TO CHECK

Electric supply interrupted Defective power wiring Cut off power fuse

Too low voltage

Measure power sypply with a tester in case that the same power source is supplied to other equipment except the unit, what and where troubled can be discovered by checking the operation of other equipment.

REMEDY Repair a switch box and relative instrument. Replacement of fuse Request a power supplier to repair.

Measure it with a tester.

Check the power source. Use a thick cable if necessary.

Magnetic switch for compressor & fan motor

Control point is on condition of "OFF" due to trouble.

Make short-circuit, then measure it with tester.

Replace it if necessary.

Operating switch

Troubled or defective contactor

Check it with the eyes or tester.

Repair or replace it.

2) Only Indoor blowers do not work WHAT TROUBLED Motor

Capacitor

Electric wiring

COMPLAINTS

HOW TO CHECK

Over heated Wiring short Defected Cut- OFF of wiring Short circuited on operation

15

REMEDY

Check it with tester

Repair or replace it.

Check it with a tester.

Replace it.

Check it with a tester.

Rewiring or Repair.

Troubleshooting Guide 3) Only outdoor fan does not work WHAT TROUBLED Motor Electric Wiring

COMPLAINTS

HOW TO CHECK

Over-heated Wire short Cut off of wiring

REMEDY

Check how it is insulated.

Repair or replace it.

Check it with a tester.

Rewiring or repair.

Short circuited on operation

4) Only compressor does not work WHAT TROUBLED

COMPLAINTS

HOW TO CHECK

REMEDY

Magnetic switch for compressor motor

Defective contact, magnetic coil troubled.

Check it with the eyes on with a tester.

Repair or replace it.

Compressor motor

Troubled over-heated (layer short)

Check how it is insulated.

Replace or repair the compressor.

High pressure switch

Troubled or defective contact or operating

Check it with a tester.

Replace it if necessary.

Electric circuit

Defective connection or disconnection of the circuit for compressor.

Check it with a tester.

Rewiring or push reset button.

16

Troubleshooting Guide 2. The Units discontinue after the operation started WHAT TROUBLED

COMPLAINTS

HOW TO CHECK

REMEDY

Outdoor coil

Coil is dirty *1

Checking

Wash it by means of something like chemical washing.

In-condensable gas blended.

Air intruded into the refrigerant pipe line *1

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 ʚ 15 C, incondensable gas may be blended.

Extract air by vacuum pump, then replenish (charge) the refrigerant.

Improper adjustment

Check it with a pressure gauge.

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.

A shortage of refrigerant amount.

Check pressure

Replenish the refrigerant. Repair the spot where it is leaked.

Reverse rotation of fan Obstacle

Confirm the wind blowing out upward.

Air short circuit *1

Check it with eyes.

If reversed, connect interchanged wires to each terminal. Power wirings.

High pressure switch (Option part)

Refrigerant

Outdoor Fan

Note: Use an appropriate measuring instrument for readjustment. *1: High-pressure switch moves.

17

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

Much Cooling or Heating load

Heat load increased. Window or door has many cracks or gaps.

Do necessary disposal respectively.

Air flow

Obstacle disturbs Intake of uniform airflow.

Checking

Correct it.

Short air volume

Reverse rotation of blower.

Checking

Correct it.

Refrigerant

Shortage in the charged refrigerant.

Coil inlet pipe is frosted

Recharge it. (Repair the leakage spot).

Air passage

Improper or foreign bodies

Checking

Correct or clear the foreign bodies.

Air filter

Clogged with dust

Checking

Cleaning

4. All the functions are performed as specified, but very noisy and vibrant WHAT TROUBLED Compressor

Blower

COMPLAINTS

HOW TO CHECK

REMEDY

Liquid refrigerant flooding back from the evaporator.

Check for refrigerant over-charge. Check to see if the intake air temperature is extremely cold. Check for insufficient air flow quantity.

Faulty Discharge valve and suction valve.

Checking

Fan broken.

Replace the compressor

Checking

Repair or replace it. Clear the foreign bodies.

Foreign matters intruded. Screws

Looseness or fail-off of screws

Checking

Correct

Electric troubles (Magnetic contactor)

Defective contact. Defective contact point. Rusting and foreign matters in the iron core contact face. Defective contact of the operating switch.

Checking

Repair and clean or replace it.

Others

Improper installation

Checking

Correct it.

18

Electronic parts Troubleshooting Guide Possible trouble 1 Is the input voltage of transformer AC220V?

: The unit does not operate. NO

1. Check the Fuse. 2. Check the wiring of AC220V.

NO

1. Exchange the transformer. 2. Check the connector of transformer.

YES

Is the output voltage of transformer AC24V & AC13V? YES

Is the output voltage of IC02D(7805) on the main PCB DC5V?

NO

1. Exchange IC02D(7805) on the main PCB. 2. Check the D01D~D05D, R05C on the main PCB.

YES

Is the output voltage of IC01D(7812 ) on the main PCB DC12V?

NO

1. Exchange IC01D(7812) on the main PCB. 2. Check the D01D~D05D, R05C on the main PCB.

YES

Is the output voltage of IC01A(7036) on the main PCB DC5V?

NO

1. Exchange IC01A(7036) on the main PCB.

YES

OSC vibration?

NO

1. Exchange OSC. 2. Check the pattern around OSC on the main PCB.

YES

1. Exchange main PCB ASS'Y

Possible trouble 2 Is the power ON?

: The remote-controller does not operate. NO

1. Exchange or exchange FUSE. 2. Check the input voltage of Main PCB ASS'Y.

YES

Is the input voltage of remote-controller DC12V?

NO

1. Check or exchange the IC01D on the Main PCB. 2. Check or exchange the Connector (RED, BROWN) of the remote controller.

YES

1. Exchange remote-controller 2. Check or exchange the Main PCB ASS'Y.

19

Electronic parts Troubleshooting Guide Possible trouble 3 Is the connection between MAIN PCB and remote-controller correct?

: Key input of remote-controller does not respond. 1. Check or repair Connector wiring. 2. Exchange the Connector.

NO

YES

Is any key on the remote-controller keeping pressed?

1. Replace the pressed key. 2. Exchange the Knob or Key.

YES

NO

Is there Check(F**) on the remote controller LCD?

YES

1. Remove cause of Check. 2. Reenergize the power supply.

NO

Is the input power voltage of remote-controller DC12V?

NO

1. Check or exchange IC01D (7812) on the MAIN PCB.

YES

Is there OSC vibration on the remote-controller PCB?

NO

1. Exchange OSC 2. Check the pattern around OSC on the remote-controller PCB.

YES

Do Keys have troubles?

YES

1. Check Keys. 2. Repair or exchange Key.

NO

Exchange remote-controller.

Possible trouble 4 Are there trouble in LCD parts?

: LCD display on the remote-controller shows some trouble. YES

1. Check crack, damage of LCD. 2. Check LCD pattern.

NO

Is there trouble in the remote-controller PCB ASS'Y?

YES

1. Check or repair all IC with dust or moisture on the PCB. 2. Exchange remote-controller PCB.

NO

Exchange remote-controller.

20

Electronic parts Troubleshooting Guide Possible trouble 5

Is the unit operating?

: No cooling operation performed. NO

1. Press power ON/OFF button.

YES

Is the cooling mode?

NO

1. Press cooling operation key. 2. After reenergizing power supply, press power "ON/OFF" button.

NO

1. Set flowing. 'Set Temp. < Room Temp.'

YES

Set Temp. < Room Temp.?

YES

Is the output voltage of Micom's 4PIN on the MAIN PCB DC0V?

NO

1. Check or exchange IC02D. 2. Check 3-minutes time delay.

YES

Is the voltage between 1PIN of CN-COMP and NEUTRAL 220V?

NO

1. Check or exchange RY4.

YES

Is the magnetic contactor for compressor OK?

NO

1. Check the wiring of Magnetic contactor. 2. Exchange Magnetic contactor.

YES

1. Check Compressor and Capacitor for Compressor. NOTE: 3Đmodel has not capacitor for compressor.

21

Electronic parts Troubleshooting Guide Possible trouble 7 Is the indoor fan operation?

: No humidifier operation performed. 1. Press cooling or fan operation or heater operation key.

NO

YES

Is the HUMID LCD "ON"?

NO

1. Press humidifier Key.

YES

Is the output voltage of Micom's 3PIN on the MAIN PCB 5V?

1. Check or exchange IC02D on the MAIN PCB.

NO

YES

Is the voltage between 1PIN of CN5 and NEUTRAL 220V?

NO

1. Check or exchange RY3.

YES

Is the magnetic contactor for humidifier OK?

NO

1. Check the wiring or Magnetic contactor. 2. Exchange Magnetic contactor.

YES

Check the humidifier.

22

Electronic parts Troubleshooting Guide Possible trouble 8

Is the unit operating?

: Indoor motor does not operate.

NO

1. Press power ON/OFF button. 2. Reconnect the power supply.

YES

Is the output voltage of Micom's 10PIN on the MAIN PCB 5V?

NO

1. Check or exchange IC01D, IC02D on the main PCB.

YES

Is the voltage between 1PIN of CN8 and NEUTRAL 220V?

NO

1. Check or exchange RY10.

YES

Is the "Power relay" for indoor motor OK?

NO

1. Check the wiring of "Power relay". 2. Exchange "Power relay".

YES

Check the indoor motor.

Possible trouble 9

Is it cooling operation?

: Outdoor motor does not operate.

NO

1. Press power "ON/OFF" button. 2. Select cooling operation.

YES

Is the compressor operating?

NO

1. Set following. Set temp. < Room temp. 2. Wait, if the unit has operating with 3-minute time delay.

YES

1. Check wiring for outdoor motor and magnetic contactor. 2. Check outdoor motor & capacitor.

23

Features of Controller 1. Main Controller Circuit Diagram

24

2. Feature of Main Controller Model No.:TN-C090BT00 TN-C120BT00

25

Model No.:TN-C180BT00 TN-C24 0BT00

26

3. Feature of Remote-Controller PCB ASS'Y

4. Feature of Remote-Controller LCD

27

5. Error Mode & Corrective Method Error mode

Cause of error

Sensing condition of error

CH01

OPEN/SHORT of Voltage of sensing: Over 4.8V room temp. Voltage of sensing: Less than sensor 0.5V

CH02

OPEN/SHORT of Voltage of sensing: Over 4.8V indoor pipe temp. Voltage of sensing: Less than 0.5V sensor Communication Error

CH03

CH05

CH18

Communication interruption between remote controller and Main PCB for 2 minutes.

Communication of Connecting cable connected to indoor and outdoor indoor and outdoor unit connect wrong or badness. Error

Pressure Error

Pressure of system: Higher than high pressure switch spec / lower than low pressure switch spec.

28

Method of SVC

Remark

RoomDŽ 1. Check the voltage of "CO1H" temp.(25 C) on the remote controller. = DC 2.5V 2. Check the temp. sensor of remtote controller. DŽ 1. Check the voltage between PIN 3 Pipe temp.(25 C) and 4 of CN-A cycle/CN-B cycle. = DC 2.2V 2. Check the temp. sensor of indoor pipe. 1. Check the connecting wire between main PCB remote controller. 2. Check the input voltage of remote-controller. 3. Check the wiring of remote-controller. 1. Check the connection between connecting cable and T/B. 2. Check the sequence of the connecting cable. 1. Check the refrigerant of the system. 2. Check the leakage of system. 3. Check the pressure switch.

Input voltage of remote-controller = DC 12V

For all models

For TN-C180BT00/ TN-C240BT00.It may at least one of the four switches has action.

9. Explanation of principal function Flow Chart START(Power supply) YES

1. Initialize "micom". 2. A/D convert. 3. Main PCB: Waiting cooling operation. 4. Remote controller: Waiting input. Dehumidification Mode? A

YES YES

Power ON?

NO

Dehumidification operating YES NO

Cooling Mode?

Stop condition?

YES

YES

Go to A

NO

Set Temp. < Indoor Temp.

YES YES

Time delay mode

NO

Cooling operating

NO

Stop condition?

YES

Go to A

29

Exploded View and Replacement Parts List 1. Indoor Unit Exploded View

437210

135515

137211

137213

152302

336610

359012

354210

W4400

352118

346811

352114 330870

263230-1

267110 263230-2 130411 263230-3

268711

249951

30

Exploded View and Replacement Parts List

135515

137211

137213

152302 336610

354210

W4400 346810

352118 330870 352114

263230-1

267110 263230-2 130411

268711C

249951

Exploded View and Replacement Parts List 2. Outdoor Unit Exploded View 435311

559010 549610

346811

330870

W4811 554030-1

554030-2

237204-1

554030-3

554030-4

649950 548490 268711

237204-2 554160

552203-2 552203-1

Exploded View and Replacement Parts List

559010

346811

554030B

268711

566001

554160A

554030A

Exploded View and Replacement Parts List

559010

554030B 346811

268711

554030A 566001

554160A

Memo

26

Memo

27

P/No.: 3828A25001C

JULY, 2007 Printed in CHINA