Hi and welcome to FixYa
, I am Kelly.
Open the freezer and locate the door / light switch. Depress
the light switch plunger / actuator and make sure the light goes off and the evaporator fan comes ON. Light stays on and fan does not run = bad door switch.
Next look for signs of ice build up on the back access panel / evaporator coils. Ice block noted on coils and back access panel = evaporator fan problem or possible door switch problem.
Last open the fiberboard cover on the back of the unit and check for massive amounts
of lint on the condenser coils and that the condenser fan is running. Blocked condenser coils or condenser fan not running will cause the chassis to be very warm to hot when touched.
If you do not find anything wrong by performing the steps above:
- Unplug the unit
- Remove freezer contents
- Direct an external fan into the freezer compartment for just over 2 hours (manual defrost)
- Tend to the water mess as needed
- After 2 hours wipe up any residual water and return the unit to normal service
- Check to see that the evaporator fan is running.
After a 2- 4 days look again for any signs of ice build up on the evaporator coils. If you note ice beginning to build up on the evaporator coils there is a problem with the automatic defrost circuit.
Possible automatic defrost failure causes:
1. Defrost Control
2. Defrost heater
3. Thermistor (if so equipped)
4. Defrost thermostat
That is pretty much it runs all the time but does not cool troubleshooting. You should find something out of the ordinary by following the steps above.
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