KitchenAid KHMS105E Service Manual page 56

PROBLEM
Blower motor will not oper-
ate.
Cooktop lamps do not come
on.
Oven heats too fast.
Oven cooks too slowly.
Speaker does not sound at
conclusion of cooking se-
quences, or after elapsed time
in Minute Timer.
Oven cooks on "HIGH" when
a lower cook power is se-
lected.
Oven runs but will not cook.
POSSIBLE CAUSE
1. Blower motor.
2. Control board.
3. Open or loose wiring in
circuit to blower motor.
1. Bulb burned out.
2. Control board.
3. Lamp sockets.
4. Open wiring between the
above components.
1. Line voltage is too high
(should be between 108-
and 132-volts AC).
2. Control board.
1. Line voltage is too low
(should be between 108-
and 132-volts AC).
2. User error.
3. Magnetron.
1. Open connection or
failed speaker.
2. Tones are programmed
out.
1. Shorted relay.
2. Control board.
1. Secondary interlock
switch.
2. Relay 2 is open.
3-14
TEST PROCEDURE
OR CORRECTION
1. Check blower motor.
2. Check control board.
3. Use ohmmeter to check
continuity, and repair
wiring.
1. Check bulb.
2. Check control board.
3. Check lamp sockets.
4. Use ohmmeter to check
continuity, and repair
wiring.
1. Use separate 15- to 20-
ampere circuit.
2. Check control board.
1. Use separate 15- to 20-
ampere circuit.
2. Instruct user regarding
proper cooking times.
3. Check magnetron.
1. Check speaker.
2. Program tones back in.
1. Check the control board.
2. Check control board.
1. Check secondary inter-
lock switch.
2. Check control board.