Troubleshooting Procedures - Maytag ACM1580AB Service Manual

Troubleshooting Procedures

To avoid electrical shock, personal injury, or death, disconnect power to unit before servicing, unless testing
requires power.
(TROUBLE 6) Convection oven does not operate at all or convection cook is bad.
CONDITION
Convection indicator
light but oven does
not go into cook
cycle when START
pad is touched.
Temperature in
the oven cavity
is lower or higher
than present.
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!
CAUTION
CHECK
Check the relay
Abnormal
4 of P.C.B.
assembly.
Normal
Check the
No continuity.
connection between
P.C.B. assembly
and headwire
connector.
Abnormal
Check the relay
4 of P.C.B.
Normal
assembly.
Abnormal
Check the
convection heater
Normal
element.
Check the
Abnormal
circulation motor.
Normal
Check the
Abnormal
damper motor.
Normal
Check the air
Interference
duct assembly.
damper open
and close at air
duct assembly.
Normal
Error message
Check the
shows in the
thermistor.
display.
Normal
Cook on the
Check the rack.
glass tray.
RESULT CAUSE
Failed relay 4.
Loose connection.
Failed relay 4.
Failed
convection heater.
Failed
circulation motor.
Failed
damper motor.
Failed air
duct assembly.
Thermistor open
or short.
Without
metal rack.
17
REMEDY
Replace P.C.B.
assembly.
Connect them
tightly.
Replace P.C.B.
assembly.
Replace
convection heater.
Replace
circulation motor.
Replace
damper motor.
Replace air duct
assembly.
Replay
thermistor.
Cook with
metal rack.
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