Maytag MDG25PN Service Manual page 106

TEST #4: Door Switch Test
Activate Diagnostic Test Mode, and perform
a Door Switch Test. Functionality can be
verified by the appearance of a degree symbol
above a digit each time door is closed, but
goes away when the door is opened again.
If the Door Switch Test does not reveal the
degree symbol (small circle above the digit) in
the display when the door is closed:
• Unplug dryer or disconnect power.
• Visually check door switch wire connectors
behind service panel. If the connections are
OK, continue on.
Door Switch
• Check that the wires between the door
switch and P8-4 on the CCU are connected.
• Check for closed circuit (0Ω) from neutral
to P8-4 on the CCU. Opening and closing
the door should change the reading on
the meter, if not, isolate the door switches
individually and test each switch for a
closed circuit (0Ω) when button on switch
is held down. Replace defective door
switch(es) as needed.
• If wiring test OK and door switch assembly
is OK or has been replaced, and the dryer
still does not start, replace the CCU.
Door Switch
Harness
Door Switch
Connector Location
Connector
Location
.
TEST #5 Exhaust Temperature Test:
1. Hold a thermometer capable of reading from
32° to 82°C (90° to 180°F) in the center of
the exhaust outlet. The correct exhaust
temperatures are as follows:
STACK EXHAUST TEMPERATURES
FABRIC
SETTING
Whites
And Colors
Perm.
Press
Delicates
* Check the cut-in and cut-out temperature
3 to 4 times to get the average. Dryer will
cycle much quicker without clothes in the
drum.
2. If the exhaust temperature is not within
specified limits, unplug dryer or disconnect
power. See dryer does not heat
(See page 6-7).
• If thermostats check OK look for exhaust
restrictions or limited make up air.
nOTE: Do not take the dryer test
temperature from inside the drum.
6-10
HEAT TURNS HEAT TURNS
OFF* ON
76.6° ± 3°C
11-16° C
(170° ± 5°F)
(25-30° F)
76.6° ± 3°C
Below the
(170° ± 5°F)
heat turn off
65.6° ± 3°C
temperature
(150° ± 5°F)