TROUBLESHOOTING

7-4

COMPLAINT

 

SYMPTOM

 

POSSIBLE CAUSES

 

SOLUTION

 

 

 

 

 

 

 

 

 

Electronic Display

1.

No Display at all

1.

Supply voltage not within specifications

1.

Check supply voltage to refrigerator

 

not operating

 

 

2.

Open in wiring harness from PWB board

2.

Check wiring and connectors to PWB board

 

correctly

 

 

3.

Open in door monitor switch circuit

3.

Check door monitor circuit

 

 

 

 

 

 

 

 

 

 

2.

Partial or

1.

Supply voltage not within specifications

1.

Check supply voltage to refrigerator

 

 

 

abnormal display

2.

Open in wiring harness from PWB board

2.

Check wiring and connectors to and from PWB

 

 

 

 

 

 

 

board

 

 

 

 

 

 

 

 

 

Not Cooling

1.

Display on but

1.

Compressor not operating

1.

Check for compressor operation by using the test

 

 

 

compressor not

2.

Open in compressor circuit

 

key on main circuit board

-

 

 

operating

 

 

2.

Check for open on OLP, PTC, compressor,

24

 

 

 

 

 

 

wiring, etc.

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Not cold enough

2.

Display on

1.

Condenser fan motor not operating

1.

Check condenser fan motor and wiring circuit

 

 

 

compressor is

2.

Condenser coils blocked

2.

Check air flow across condenser

 

 

 

operating

3.

Evaporator fan motor not operating

3.

Check evaporator fan motor and wiring circuit

 

 

 

 

4.

Damper not opening or internal air flow blocked

4.

Check damper motor circuit

 

 

 

 

5.

Sensor not operating properly

5.

Check refrigerator and freezer sensors

 

 

 

 

6.

Door not sealing

6.

Check for proper door esal

 

 

 

 

7.

Evaporator Frosted up

7.

Check defrost circuit components

 

 

 

 

8.

Sealed System related problem

 

 

 

 

 

 

 

 

 

 

 

Not defrosting

1.

Frosted up in

1.

Open in defrost circuit

1.

Check defrost heater and circuit using Test Key

 

 

 

Freeer

2.

Defrost sensor not operating correctly

2.

Check sensor

 

 

 

 

3.

Defrost drain clogged

3.

Check drain

 

 

 

 

 

 

 

 

 

Page 24
Image 24
LG Electronics LRTN22310, LRTN19310 service manual Complaint Symptom Possible Causes Solution

LRTN19310, LRTN22310 specifications

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