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– 48 –
Heavy Frost on Evaporator
Unplug refrigerator from power.
Unplug blue connector from main
board. Measure between blue wire
on connector and neutral orange
wire on main board J7, pin 9.
Is there approximately 22
Ω
?
Verify thermistors are within proper
range using temperature resistance
chart on page 49
Is the resistance within range?
No
Yes
No
Replace
main board
Check wiring connections
If wiring is OK,
replace thermistor
Check wiring harness
Check defrost heater
Check defros safety thermostat
First, always check door ajar,
customer usage - numerous
door openings, etc...
Yes