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TROUBLE SHOOTING
IMPORTANT: You must disconnect and lockout the electric supply and the gas supply or the
steam supply before any covers or guards are remove from the machine to allow
access for cleaning, adjusting, installation, or testing of any equipment per OSHA
(Occupational Safety and Health Administration) STANDARDS.
The information provided will help isolate the most probable component(s) associated with
the difficulty described. The experienced technician realizes, however, that a loose connection or
broken / shorted wire may be at fault where electrical components are concerned...not necessarily
the suspected component itself. Electrical parts should always be checked for failure before being
returned to the factory.
IMPORTANT: When replacing blown fuses, the replacement must be of the exact rating as the
fuse being replaced. The information provided should not be misconstrued as a
handbook for use by an untrained person in making repairs.
WARNING: All service and troubleshooting should be performed by a qualified professional or
service agency.
WARNING: While making repairs, observe all safety precaution displayed on the Dryer or
specified in this manual.
A. MICROPROCESSOR MODELS
1.
No display (microprocessor (computer) models ONLY).
1)
Service panel fuse blown or tripped breaker.
2)
Blown L1 fuse or L2 fuse.
3)
Failed microprocessor controller (computer).
2.
Drive motor not operating (does not start).
1)
Failed drive motor contractor (relay).
2)
Failed drive motor.
3)
Failed microprocessor controller (computer).
3.
Drive motor (reversing) operates in one direction only...stops and restarts in same
direction.
1)
Failed reversing contractor (relay).
2)
Failed microprocessor controller (computer).
4.
Drive motor operates okay for a few minutes, and then stops and will not restart.
1)
Motor is overheating and tripping out on internal overload protector.
a.
Motor air vents clogged with lint.
b.
Low voltage to the motor.
c.
Failed motor.
d.
Basket (tumbler) is binding...check for an obstruction.
SECTION 7
TROUBLE SHOOTING
7-1
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