American Dryer Corp. MDG75V - Manual (Page 41)

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SECTION VI
TROUBLESHOOTING
IMPORTANT: YOU MUST DISCONTINUE AND LOCKOUT THE ELECTRIC SUPPLY
AND THE GAS SUPPLY BEFORE ANY COVERS OR GUARDS ARE
REMOVED FROM THE DRYER 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...and not necessarily the suspected component itself.
Electrical parts should always be checked for failure before being returned to the factory.
The information provided should not be misconstrued as a handbook for use by an untrained person making
repairs.
IMPORTANT: When replacing blown fuses, the replacement must be of the exact rating as the fuse
being replaced.
WARNING: ALL SERVICE AND TROUBLESHOOTING SHOULD BE PERFORMED BY
A QUALIFIED PROFESSIONAL OR SERVICE AGENCY.
WARNING: WHILE MAKING REPAIRS, OBSERVE ALL SAFETY PRECAUTIONS
DISPLAYED ON THE DRYER OR SPECIFIED IN THIS MANUAL.
MICROPROCESSOR CONTROLLER (COMPUTER) MODELS
A. No light emitting diode (L.E.D.) display...
1. Service panel fuse blown or tripped breaker.
2. Blown control circuit L1 or L2 1/2-Amp (Slo-Blo) fuse.
3. Failed microprocessor controller (computer).
4. Failed step down transformer (for models 380 volts or higher only).
B. Drive motor is not operating (does not start)...
1. Failed drive motor contactor (relay).
2. Failed arc suppressor (A.S.) board (for reversing models only).