KitchenAid KAC-48, Technical Education

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6-
FAILURE CODE INDICATIONS
NOTE: Many of the problems listed in the
chart below may be solved by power cycling:
unplug microwave oven or disconnect power.
After one minute, plug in microwave oven or
reconnect power.
Display Likely Failure Condition Recommended Repair Procedure
Flashing
colon “:”
Power failure 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.
F2 Touch panel failure 1. Unplug microwave oven or disconnect power.
2. Replace touch panel.
3. Replace all parts and panels before operating.
4. Plug in microwave oven or disconnect power.
5. If problem persists, unplug microwave oven or disconnect power.
6. Replace electronic control.
7. Replace all parts and panels before operating.
8. Plug in microwave oven or reconnect power.
F3H Humidity sensor failure 1. Unplug microwave oven or disconnect power.
2. Connect a new humidity sensor to the electronic control (at P1).
3. Replace all parts and panels before operating.
4. Plug in microwave oven or reconnect power.
5. If no failure code appears when starting sensor function, unplug
microwave oven or disconnect power.
6. Replace humidity sensor.
7. Replace all parts and panels before operating.
8. Plug in microwave oven or reconnect power.
9. If failure code appears when starting sensor function, unplug
microwave oven or disconnect power.
10. Replace electronic control.
11. Replace all parts and panels before operating.
12. Plug in microwave oven or reconnect power.
F6 MW relay 1. Unplug microwave oven or disconnect power.
2. Check wiring to Relay 4903.
3. Check to see if the relay (4903 on relay control board) contact has
welded closed.
4. Replace all parts and panels before operating.
5. Plug in microwave oven or reconnect power.
6. If problem persists, unplug microwave oven or disconnect power.
7. Replace electronic control.
8. Replace all parts and panels before operating.
9. Plug in microwave oven or reconnect power.