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mICROWAVE OVEN POWER OUTPUT TEST
1. Place 8 oz (250 mL) of lukewarm water in the center of the
microwave oven.
2. Operate on HIGH power level for 2 minutes. Water
should be hot.
Display
Likely Failure Condition
Flashing
Power failure
colon ":"
F2
Touch panel failure
F3H
Humidity sensor failure
F6
Microwave relay failure
FAILURE CODES INDICATIONS
Recommended Repair Procedure
After a power failure, the colon ":" will be flashing. Press any key to end this
indication. The colon will then be steady when in standby.
1. Unplug microwave oven or disconnect power.
2. Replace touch panel.
3. Plug in microwave oven or disconnect power.
4. If problem persists, unplug microwave oven or disconnect power.
5. Replace electronic control.
6. Plug in microwave oven or reconnect power.
1. Unplug microwave oven or disconnect power.
2. Connect a new sensor to the electronic control (at P1).
3. Plug in microwave oven or reconnect power.
4. If problem persists, unplug microwave oven or disconnect power.
5. Replace electronic control.
6. Plug in microwave oven or reconnect power.
1. Unplug microwave oven or disconnect power.
2. Check wiring to Relay 4903 for short circuits.
3. If wiring is OK, replace electronic control.
4. Plug in microwave oven or reconnect power.
NOTE: If the water takes longer than 2 minutes to heat,
this may indicate either the operating voltage is lower
than 110 volts or there is a problem with the microwave
oven.
6-3
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