Maytag MDG25PN Service Manual page 100

1. On model 22: Check for continuity (0 Ω)
between the neutral (N) terminal of the
plug and white wire on the step down
transformer.
On model 25: Check for continuity (0 Ω)
between the neutral (N) terminal of the plug
and blue wire at P8-3 on the CCU.
• If there is continuity (0 Ω), go to step 8.
• If there is no continuity and the mechanical
connections of the wires are secure, replace
the main wire harness.
2. Model 22 and 25: visually check that
the UIC transformer is connected to the
UIC at AA6, and no wires are loose in
the connector. Check also the two wire
connector at the primary side of the UIC
transformer.
3. If steps 6, 7 & 8 pass, visually check that
the P2 connector is inserted all the way into
the dryer CCU control board.
4. Visually check that all UIC connections are
tight and all wires secured into connectors.
5. If all of the visual checks pass, reinstall the
console electronics, housing assembly, and
all parts and panels before operating.
6. Plug in dryer or reconnect power.
7. Perform the Diagnostic Test to verify repair.
8. If indicators do not light, the dryer UIC
electronics have failed:
• Unplug dryer or disconnect power.
• Replace the dryer UIC.
• Reinstall all the parts and panels before
operating.
• Plug in dryer or reconnect power.
• Perform Diagnostic Test to verify repair.
9. Reinstall the console electronics, console
assembly, and all parts and panels before
operating.
10. Plug in dryer or reconnect power.
11. Perform the Diagnostic Test to verify repair.
12. If display segment on dryer still does not
light, the dryer UIC has failed:
• Unplug dryer or disconnect power.
• Replace the UIC.
• Reinstall all parts and panels before
operating.
• Plug in dryer or reconnect power.
• Perform diagnostic test to verify repair.
GaS DrYEr
1. Unplug dryer or disconnect power.
2. Remove the cover plate from the upper right
corner of the back of the dryer.
3. Check that the power cord is firmly
connected to the dryer's wire harness. The
power cord is in two pieces, Check for
continuity (0Ω) from each plug end to the
wire harness connector just inside the cover
plate. Check continuity of this power cord
while both halves are connected
(See page 6-3).
4. Access dryer control electronics without
disconnecting any wiring to the controls.
6-4
1/4" Hex
Head Screw