IV. Service Diagnosis
WARNING
•This appliance should be diagnosed and repaired only by qualified service personnel to reduce the risk of death, electric shock, serious injury, or fire.
•Risk of electric shock. Use extreme caution and exercise safe electrical practices.
•Moving parts (e.g. fan blade) can crush and cut. Keep hands clear.
•Make sure all food zones are clean after the appliance is serviced. For cleaning procedures, see "VI. A. Cleaning."
A.Diagnostic Procedure
The diagnostic procedure is basically a sequence check that allows you to diagnose the electrical system and components. Before proceeding, check for correct installation and proper voltage per appliance nameplate. When checking AC voltage (115VAC), always choose a neutral (W wire) to establish a good neutral connection. If the control board is in alarm, see "II.F Alarm Safeties." For further details, see "IV.B. Control Board Check."
•If the control panel is locked, press and hold the
•The °F and cabinet temperature LEDs remain on throughout the sequence of operation.
•This appliance uses a
•
Defrost time is cumulative power on time, therefore time may vary between starting the appliance and the first defrost. After the first defrost, defrost can be monitored for activation every 6 hours.
•Cabinet temperature is displayed during defrost.
1)Press and hold the power button for 2 sec. to turn off the appliance.
2)Unplug the appliance from the electrical outlet.
3)Remove the top panel. Secure the top panel to prevent it from falling over when checking voltages and CB items.
4)Secure (tape) DS in the door closed position.
5)Plug the appliance back into the electrical outlet. °F LED turns on. Diagnosis: Confirm that °F LED is on. If not, check CB POWER connector for 115VAC. If 115VAC is not present, check power supply and power cord connection. If 115VAC is present and
°F LED is not on, replace CB.
6)Press the power button for 2 sec. to turn on the appliance.
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