Maytag ACM0720AB - Page 18

16026268 18 ©2005 Maytag Services
Troubleshooting Procedures
Trouble 2: Oven does not operate at all, display window does not display any digits, and
no input is accepted.
Fuse blows. Check continuity
of monitor switch
with door closed.
Continuity
Malfuction of
the monitor
switch.
Replace the fuse,
primary, secondary,
monitor switches
and printed
circuit board.
No
Continuity
Check continuity
of primary switch
with door opened.
Continuity
No
Continuity
Malfunction of
secondary
switch.
Check continuity
of secondary
switch with
door opened.
Continuity
No
Continuity
Disconnect one side
of the wire lead
connecting transformer
to high voltage
capacitor and operate
the unit.
Normal
Fuse blows
again.
Failed
high voltage
capacitor.
Failed
high voltage
transformer.
Replace
high voltage
capacitor.
Replace
high voltage
transformer.
Fuse does
not blow.
Check continuity
of thermostat.
Continuity
Failed
thermostat.
Replace
thermostat.
No
Continuity
Check continuity
of power
supply cord.
No
Continuity
Failed
power supply
cord.
Replace
power supply
cord.
Replace the fuse,
primary, secondary,
monitor switches
and printed
circuit board.
Replace the fuse,
primary, secondary,
monitor switches
and printed
circuit board.
Malfunction of
secondary
switch.