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Troubleshooting Guide
13
Problem Possible Cause
1. Freezer too warm.
•
Freezer thermistor failed. Run diagnostic test Step 1.
•
Excessive frost on evaporator. Check defrost system with diagnostic test,
Step 6.
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Freezer light not shutting off.
•
Condenser blocked or fan motor not running.
•
Evaporator fan motor failed. Confirm at Step 3 in diagnostic test mode.
2. Freezer too cold.
•
Failed freezer thermistor. Run diagnostic test.
3. Refrigerator too warm.
•
Refrigerator thermistor failed. Run diagnostic test.
•
Excessive frost on evaporator. Check defrost system in test mode
with Step 6.
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Refrigerator light not shutting off.
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Baffle not opening or air returns blocked.
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Condenser blocked or fan motor not running.
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Evaporator fan motor failed. Confirm at Step 3 in diagnostic test mode.
4. Refrigerator too cold.
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Air baffle not closing.
•
Refrigerator thermistor failed. Run diagnostic test.
5. Refrigerator won’t run.
•
Is control powered off? Press the “Power” button for 2 seconds. If there is no
response, unplug refrigerator for 30 seconds. Plug in refrigerator and check for
normal operation.
•
Failed control board. Run diagnostic test.
6. Evaporator fan
•
It is normal for the fan to delay for the first 4 minutes 15 seconds after defrost
won’t run. and 40 seconds after the compressor starts.
•
Failed fan motor. Confirm at Step 3 in test mode.
7. Defrost system not
•
Enter the diagnostic mode and go to Step 6. Confirm the heater is operating.
operating. NOTE: If the bi-metal is open, it will be necessary to by pass it with an
insulated jumper.
8. Defrost heater won’t
•
After the first 5 minutes of defrost, it is normal for the heater to cycle at
stay on. the rate of off for 1 minute and on for 2 minutes.
9. Control does not respond.
•
Disconnect the power for 30 seconds. Reconnect the power and run
diagnostics. If the control still does not respond, replace the control board.