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Troubleshooting - Kenmore Clothes Dryer Installation And Owner's Manual

Coin-operated commercial electric dryer
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TROUBLESHOOTING
Before servicing the dryer, always check out the
machine to substantiate the complaint for which the
service call was created. In many cases, it may just be a
customer-instruct
problem.
Will not run
• Power supply
Check line fuses and line switches.
• Main wiring harness
Check for loose or broken terminal.
• Door switch
Make continuity check on switch contacts.
• Main motor
Check motor.
• Timer
Make continuity check on timer contacts Y to BG.
• PUSH TO START button
Check start switch for continuity.
• Power relay
Check power relay for open coil or bad contacts.
Clothes
not drying
• Operating
thermostat
Check for open switch contacts.
• Main motor
Check motor centrifugal switch M2 to M3 for open
contact.
• Timer
Check timer switch contacts Y to R for continuity.
Also Y to BR, if used on timer.
• Main wiring harness
Check for voltage at 1V, 2V, and 3V. Check harness
for shorted or broken wire.
• Drum belt
Check belt. May be worn, broken, or off pulley. Faulty
idler assembly.
• Drum seals
Check front and rear drum seals. Must be properly
positioned on the drum and flange surface.
• Exhaust fan
Check fan for proper RPM, lint.
• Lint screen
Check lint screen for lint.
• Exhaust vent
Check exhaust vent for lint blockage.
• Power supply
Check line fuses and switches.
• Heat element
Check for broken element wire.
• Load
Check for size and type of load.
• Improperly
grounded
Check for control panel being grounded.
Drum will not rotate
• Drum belt
Check for broken belt. Be sure it is properly posi-
tioned on motor pulley.
Will not shut off
• Timer
Check timer motor for function and timer for welded
contacts.
• Operating
thermostat
Check for correct thermostat in dryer. Check for
failed thermostat.
Blowing fuses
• Electrical ground
Check motor, electrical components, and harness
for ground.
• Fuse box
Defective fuse-box assembly. Improperly fused.
Moisture retention
unsatisfactory
• Blocked
exhaust
Inspect exhaust system for lint.
• Thermostats
Check reason for improper cycling.
• Improperly
grounded
control
panel
Check grounding of control panel.
Will not heat
• Main wiring harness
Check main harness at element terminals.
• Operating
and high limit thermostats
Install jumper across terminals and test dryer,
or make continuity test on switch contact.
• Main motor
Check motor centrifugal switch 2M to 3M for
continuity.
• Timer
Check continuity of timer contacts Y to R.
Also Y to BR if used on timer.
• Power supply
Check line fuses and switches.
• Heat element
Check for broken element wire.
continued on next page
17

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