Lg Bs36dhl, Bs24dhl Owner's Manual

Internal Use Only

http://biz.lgservice.com

Ceiling Duct Type Air Conditioner

SVC MANUAL(Exploded View)

MODEL : LB-F3660HL

LB-F3660CL

CAUTION

Before Servicing the unit, read the safety precautions in General SVC manual. Only for authorized service personnel.

Contents

Functions 3

Product Specifications (Cooling & Heating) 5

Dimensions 6

Refrigeration Cycle Diagram 7

Wiring Diagram 9

Operation Details 11

Installation of Indoor, Outdoor Unit 14

Test Running 25

3-way Valve 27

Cycle Troubleshooting Guide 32

Electronic Parts Troubleshooting Guide 33

Electronic Control Device 36

Schematic Diagram 37

Exploded View 38

- 2 -

LGE Internal Use Only

Functions

Indoor Unit

Operation ON/OFF by Remote controller

Sensing the Room Temperature

Room temperature sensor. (Thermistor)

Room temperature control

Maintains the room temperature in accordance with the Setting Temp.

Starting Current Control

Indoor fan is delayed for 5 seconds at the starting.

Time Delay Safety Control

Restarting is inhibited for approx. 3 minutes.

Indoor Fan Speed Control

High, Med, Low

Soft Dry Operation Mode

Intermittent operation of fan at low speed.

Deice (defrost) control (Heating)

Both the indoor and outdoor fan stops during defrosting. Hot start after defrost ends.

Hot-start Control (Heating)

The indoor fan stops until the evaporator piping temperature will be reached at 28°C

- 3 -

LGE Internal Use Only

Remote Controller

Operation ON/OFF

Operation Mode Selection

Fan Speed Selection

Room Temperature Display

Temperature Setting

Setting the Time or Timer

(Cooling

model only)

(Heating

model only)

(Low) (Med) (High)

Cooling Operation Mode ( ) Heating Operation Mode ( )

Soft Dry Operation Mode ( )

Fan Operation Mode

HIMEDLO

Set

: High:39°C LOW:11°C

: Fan Operates without cooling & heating

Although the air conditioner is turned off by a power failure, it is restarted

✔

automatically after a power resupply.

Cooling Heating

Down to 18°C Up to 30°C

Down to 16°C Up to 30°C

- 4 -

LGE Internal Use Only

Product Specifications (Cooling & Heating)

Model Name

Item

Cooling Capacity Btu/h(kcal/h) 36,000(9,073) 36,000(9,073)

Heating Capacity Btu/h(kcal/h) 36,000(9,073) -

Moisture Removal l/h 5.0

Power Source Ø, V, Hz 1, 220-240, 50

Unit

LB-F3660HL LB-F3660CL

Air Circulation

Input Cooling 4,600 4,700

Running Current Cooling 23 23

E.E.R. Btu/h-W 7.83 7.66

Dimensions (W H D)

Net. Weight

Refrigerant (R-22) g 3.4 3.4

Remocon Type L.C.D

Service Valve & Connecting Tube

Drain Hose

Connecting Wire 0.75mm

Main Power Cable 5.5mm

Indoor 37

Outdoor 58

Heating 4,150 -

Heating 21.5 -

Indoor 1,180 x 298 x 600

Outdoor 790 x 965 x 320

Indoor 46 46

Outdoor 81 78

m3/min

W

A

mm

kg

Liquid 3/8" (9.52)

Gas 5/8" (15.88)

2

Time Delay Safety Function

Soft Dry

Fan Speed (Indoor) 3 (Hi, Med, Low)

Timer 24Hrs

Self-Diagnosis

- 5 -

LGE Internal Use Only

Dimensions

790

965

320

1180

600

298

■ Model:LB-F3660HL/CL

(1) Indoor Unit

(2) Outdoor Unit

- 6 -

LGE Internal Use Only

Refrigeration Cycle Diagram

■ LB-F3660HL

INDOOR UNIT OUTDOOR UNIT

HEAT EXCHANGER

CAPILLARY TUBE

LIQUID SIDE

GAS SIDE

CHECK VALVE

CAPILLARY TUBE

BY PATH CAPILLARY TUBE

HEAT EXCHANGER

REVERSING VALVE

COMPRESSOR

COOLING HEATING

Pipe size(Diameter: ø) Piping length(m) Elevation(m)

MODEL

Gas Liquid Rated Max. Rated Max.

LB-F3660HL 5/8" 3/8" 5 25 5 15

( Rated performance for refrigerant line length of: 5m)

For installation over rated distance, 70g of refrigerant should be added for each meter.

ex) When installed at a distance of 15m, 700g of refrigerant should be added.

(15-5) x 70g = 700g

- 7 -

LGE Internal Use Only

■ LB-F3660CL

INDOOR UNIT OUTDOOR UNIT

HEAT EXCHANGER (CONDENSER)

CAPILLARY TUBE

LIQUID SIDE

GAS SIDE

HEAT EXCHANGER (CONDENSER)

COMPRESSOR

Pipe size(Diameter: ø) Piping length(m) Elevation(m)

MODEL

Gas Liquid Rated Max. Rated Max.

LB-F3660CL 5/8" 3/8" 5 25 5 15

( Rated performance for refrigerant line length of: 5m)

For installation over rated distance, 70g of refrigerant should be added for each meter.

ex) When installed at a distance of 15m, 700g of refrigerant should be added.

(15-5) x 70g = 700g

- 8 -

LGE Internal Use Only

Wiring Diagram

2

6

4

COi

GN/YL

FMi

TRANS

WH

BL

BK

GN/YLGN/YL

RD

OR

CN-TRANS2

PWB ASM

CN-POWER

CN-TRANS1

Hi Med Low

CN-MOTOR

RY-FAN

RY-4WAY

RY-COMP

CN-OUT

1

3

6

DC-12V

SIGNAL

GND

CN-REMO

INDOOR ELECTRIC CIRCUIT

INDOOR UNITOUTDOOR UNIT

(

RD

)

(

YL

)

(

BR

)

P/NO : 3854A20025F

4

5

3

2

78

1TM

220-240V 1Ø, 50Hz

POWER SUPPLY

BK

63H2

52C

L1T1L2

T2

A2

A1

BK

WH

BK

52F1

12

34

56

TNS

NO

C TH

NC

D.P

WH

BK

BLBK

WH

T/B1

F1

BK

WH WH

WH

BR

Co

OR YLCoOR

FMo1

49FMo

FMo2

49FMo

YL

BKBK

BK

BL

WH

GN/YL

23

NL

20SV

BKBKBK

BK

WH

BK

1

NOTE

BL : BLUE BK : BLACK BR : BROWN OR : ORANGE GN/YL : GREEN/YELLOW

RD : RED WH : WHITE YL : YELLOW

Re

CN-TH

EVATHROOM

TH

CH1

BKWHRD

R

C

S

CM

Cr

PTCR

78

1TM

220-240V 1Ø, 50Hz

POWER SUPPLY

BK

63H2

52C

Outdoor Unit Wiring Diagram

L1 L2

T1 T2

A2

A1

BK

WH

BK

52F1

12

34

56

TNS

NO

C TH

NC

D.P

WH

BK

WH

BK WH BL RD

GN/YL

BLBK

YL

WH

T/B1

F1

BK WH WH

WH

Co

OR YLCoOR

FMo1

49FMo

NOTE

BL : BLUE BK : BLACK BR : BROWN OR : ORANGE GN/YL : GREEN/YELLOW

63H2

C TH

20SV

52C

Tmo

HIGH PRESSURE SWITCH FOR HEATING

THERMISTOR FOR PIPE TEMP.

REVERSING COIL

MAGNECTIC CONTACTOR

TERMINAL BLOCK

TM

52F1

Cr

CM

Co

MAIN TERMINAL BLOCK

RELAY FOR FMo

RUN CAPACITOR FOR CM

COMPRESSOR

RUN CAPACITOR FOR FMo

FMo

F1

DP

CH1

OUTDOOR FAN MOTOR

FUSE (250V, 5A)

DEICER PCB

CRANK CASE HEATER FOR CM

P/NO : 3854A20025G

RD : RED WH : WHITE YL : YELLOW

FMo2

49FMo

20SV

YL

BKBK

BR

BK

BL

BK

WH

BK BK

WIRING OF FIELD (CONNECTING WIRE)

GN/YL

Tmo

To the indoor unit

WH

GN/YL

23

LN

1 2 3 4 5 6

CH1

BKWHRD

R

C

S

CM

Cr

PTCR

■ Model: LB-F3660HL

(1) Indoor Unit

(2) Outdoor Unit

- 9 -

LGE Internal Use Only

■ Model: LB-F3660CL

2

6

COi

GN/YL

FMi

TRANS

WH

BL

BK

GN/YLGN/YL

OR

CN-TRANS2

PWB ASM

CN-POWER

CN-TRANS1

Hi Med Low

CN-MOTOR

RY-FAN

RY-4WAY

RY-COMP

CN-OUT

CN-TH

EVATHROOM

TH

1

3

6

DC-12V

SIGNAL

GND

Re

CN-REMO

INDOOR ELECTRIC CIRCUIT

INDOOR UNITOUTDOOR UNIT

(

RD

)

(

YL

)

(

BR

)

P/NO : 3854A20025H

3

2

1TM

220-240V 1Ø, 50Hz

POWER SUPPLY

BK

52C

L1T1L2

T2

A2

A1

BK

WH

T/B

F1

BK

WH

BK

WH

RD

R

C

S

BR

Co

OR

YLCoOR

FMo1 FMo2

CM

YL

BKBK

BK

BL

BK

WH

GN/YL

23

NL

WH

1

NOTE

BL : BLUE BK : BLACK BR : BROWN OR : ORANGE

RD : RED WH : WHITE

GN/YL : GREEN/YELLOW

CH1

Cr

PTCR

Outdoor Unit Wiring Diagram

NOTE

BL : BLUE BK : BLACK BR : BROWN OR : ORANGE

52C

TMo

Cr

CM

MAGNECTIC CONTACTOR

TERMINAL BLOCK

RUN CAPACITOR FOR CM

COMPRESSOR

TM

FMo

F1

MAIN TERMINAL BLOCK

OUTDOOR FAN MOTOR

FUSE(250V, 5A)

Co

CH1

RUN CAPACITOR FOR FMo

CRANK CASE HEATER FOR CM

P/NO : 3854A20025J

RD : RED WH : WHITE

WIRING OF FIELD (CONNECTING WIRE)

GN/YL : GREEN/YELLOW

1TM

220-240V 1Ø, 50Hz

POWER SUPPLY

BK

52C

L1 L2

T1 T2

A2

A1

BK

WH

BK WH BL

GN/YL

T/B

F1

BK

WH

Co

OR YLCoOR

FMo1 FMo2

YL

BKBK

BR

BK

BL

BK

WH

GN/YL

To the indoor unit

WH

GN/YL 23

LN

TMo

1 2 3 4 5 6

CH1

BKWHRD

R

C

S

CM

Cr

PTCR

(1) Indoor Unit

(2) Outdoor Unit

- 10 -

LGE Internal Use Only

Operation Details

(1) The function of main control

1. Time Delay safety Control

• 3min The compressor is ceased for 3minutes to balance the pressure in the refrigeration cycle. (Protection of compressor)

• 30sec The 4-way valve is ceased for 30sec. to prevent the refrigerant-gas abnormal noise when the Heating

operation is OFF or switched to the other operation mode while compress is off. While compressor is running, it takes 3~5 seconds to switch.

2. Soft-Dry Operation

• The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of

already being set to the best speed for Dry Operation by Micom Control.

3. Cooling Mode Operation

• When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote con-

troller and the operation diagram is as following

Intake Air temp.

COMP. ON (SET TEMP.+0.5°C)

COMP. OFF (SET TEMP. -0.5°C) More than More than

3 minutes 3 minutes

INDOOR FAN Low Low

COMPRESSOR ON OFF ON OFF ON

Selecting Selecting Selecting

fan speed fan speed fan speed

- 11 -

LGE Internal Use Only

4. Heating Mode Operation (Except Cooling Model)

PIPING TEMPERATURE

1min

COMPRESSOR

INDOOR FAN

ON

28°C

: Selected Fan : Low Fan : Fan Stop

31°C

The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.

Intake Air temp.

Setting temp.+3°C

(Compressor OFF)

Setting temp. (Compressor ON)

INDOOR FAN Low OFF Low Low OFF

COMPRESSOR ON OFF ON OFF

A point; While the indoor Heat-Exchanger temperature is higher than 40°C fan operates at low speed, when

it becomes lower than 40˚C fan stops.

B point; When the indoor Heat-Exchanger temperature is higher than 42°C, fan operates at seleted fan

speed, when it becomes lower than 39°C, the fan operates at low speed.

minimum 3min

Hot Start

1min

Low

Selecting

Fan Speed

minimum

10sec.

AA

B

minimum

10sec.

Selecting fan

speed

5. Hot-Start Control

The indoor fan stops until the evaporator piping temperature will be reached to 31°C.

The operation diagram is as following.

- 12 -

LGE Internal Use Only