Service Manual

2-12
n
Whirlpool & Maytag Front-Load Dryers
DIAGNOSTICS & TROUBLESHOOTING
Problem Possible Cause Checks & Tests
Won’t Power Up
• No operaon
• No keypad
response
• No LEDs or display
No power to dryer. Check power at outlet, check circuit breaker, fuses, or juncon
box connecons.
Connecon problem between AC
plug and dryer.
See Test #2: Supply Connecons, page 3-10.
Connecon problem between ACU
and HMI.
Check connecons and harness connuity between ACU and
HMI.
Power supplies not present at
machine electronics.
See Test #1: ACU Power Check, page 3-8.
HMI problem. See Test #6: Buons & Indicators, page 3-20.
Will Not Start Cycle
(No response when
START buon is
pressed.)
Door not fully closed or striking the
door latch.
Be sure the door is completely closed, then press and hold the
START buon.
Door switch problem. See Test #7: Door Switch, page 3-21.
Drive belt/belt switch (gas only)
problem.
See Test #3: Motor Circuit, page 3-12.
Thermal fuse / Motor Problem See Test #3: Motor Circuit, page 3-12.
HMI problem. See Test #6: Buons & Indicators, page 3-20.
ACU problem. See Test #1: ACU Power Check, page 3-8.
Will Not Shut O
When Expected
Poor airow. Check lint screen and exhaust vent. Clean if necessary.
Check the Start/Pause buon. Perform Key Acvaon & Encoder Test.
Moisture sensor problem. See Test #5: Moisture Sensor, page 3-19.
Thermistor problem. See Test #4a: Thermistors, page 3-16.
HMI problem. See Test #6: Buons & Indicators, page 3-20.
ACU problem. See Test #1: ACU Power Check, page 3-8.
Console Won’t Accept
Selecons
User selected invalid opon. Refer customer to “Use and Care Guide.”
HMI problem. See Test #6: Buons & Indicators, page 3-20.
Drum Will Not Spin Drive belt/belt switch (gas only)
problem.
See Test #3: Motor Circuit, page 3-12.
Thermal fuse (elect. only). See Test #4b: Thermal Fuse, page 3-17.
Door switch problem. See Test #7: Door Switch, page 3-21.
Motor problem. See Test #3: Motor Circuit, page 3-12.
ACU problem. See Test #1: ACU Power Check, page 3-8.
Will Not Heat Check installaon. Verify proper dryer installaon.
Check for L1 and L2. Perform ACU L1 and L2 tests under Service Test Mode.
Heater system malfuncon or open
heater coil.
See Test #4: Heat System, page 3-14.
ACU problem. See Test #1: ACU Power Check, page 3-8.
Troubleshoong Guide
NOTE: Always check for error codes rst (page 2-11).
Connued on following page . . .
Console and LCD Troubleshooting Guide