Service Diagnosis Chart - Kenmore 795.75312.900 Service Manual

6-4 SERVICE DIAGNOSIS CHART

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