Maytag MDE/MDG21PDA Service Manual page 32

Troubleshooting Procedures
To avoid risk of electrical shock, personal injury or death, disconnect power to unit before servicing, unless testing
requires power.
Stack Dryer Troubleshooting Guide
Dryer Will
Not Heat
breakers and fuses that
Does thermal fuse
show continuity?
centrifugal switch
Cannot
Enter Or
Check adjustment
of service switch
Exit
Operator
Mode
If problem persists, replace
32
!
Open all gas supply
valves for gas dryer.
Check all circuit
feed electric dryer.
Unplug dryer does
Unplug dryer.
Yes
thermostat show
No
Replace thermal
limit thermostat.
fuse and
thermostats.
Check motor
relay and replace if
and replace if
necessary.
thermistor.
and lock.
Yes
control board
16022904 Rev. 0
WARNING
Unplug dryer. Check
wiring and terminations
between control board,
heater relay, heater and
motor
Unplug dryer.
Does 155 deg.
high limit
Yes
continuity?
No
Replace high
Replace 155
Check for
exhaust
restrictions.
Check wiring and
Inspect heater
necessary.
(electric dryer)
Disconnect harness
from thermistor check
Replace
No between 5K and 15K
Check wiring and
terminations between
service switch and
control board.
Does service
switch open and
close properly?
Unplug dryer. At
room temperature is
the resistance of the
Yes
thermostat
heating element less
show
than 20 ohms?
continuity?
(Electric dryer only)
No
Replace heating
deg.
thermostat.
Yes
termination
between
thermistor and
control board
If problem persist,
Yes replace control
ohms at room
temperature?
Unplug dryer. Disconnect upper
connector from control board.
Check for conuity between terminal
13 and 14 of connector while
cycling the service switch
Replace service
No
switch
©2004 Maytag Appliances Company
No
element.
board.