7-4 SERVICE DIAGNOSIS CHART
NOITULOSSESUAC ELBISSOPMOTPMYSTNIALPMOC
1. Supply voltage not within specifications
1. Check supply voltage to refrigerator
2. Open in wiring harness from PWB board
2. Check wiring and connectors to PCB board
3. Open in door monitor switch circuit
3. Check door monitor circuit
1. Supply voltage not within specifications
1. Check supply voltage to refrigerator
2. Open wiring harness from PWB board
2. Check wiring and connectors to PCB board
1. Compressor not operating
1. Check for compressor operation by using the test key
on main circuit board.
2. Open in compressor circuit
2. Check for open on OLP, PTC, compressor, wiring, etc.
1. Condenser fan motor not operating
1. Check condenser fan motor and wiring circuit
2. Condenser coils blocked
2. Check air flow across condenser
3. Evaporator fan motor not operating
3. Check evaporator fan motor and wiring circuit
4. Internal air flow blocked
4. Check air ducts
5. Sensor not operating properly
5. Check refrigerator and freezer sensors
6. Door not sealing
6. Check for proper door seal
7. Evaporator frosted up
7. Check defrost circuit components
8. Sealed system related problem
1. Open in defrost circuit
1. Check defrost heater and circuit using Test Key
2. Defrost sensor not operating correctly
2. Check sensor
3. Defrost drain clogged
3. Check drain
1. Freezer has too
much frost
1. Display on
compressor is
operating
1. No Display at all
2. Partial or
abnormal display
1. Display on but
compressor not
operating
Electronic Display not
operating correctly
Not cooling
Not cold enough
Not defrosting
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