American Dryer Corp ML-310 Phase 7 service manual Phase 7 OPL System Diagnostics

SECTION VI

PHASE 7 OPL SYSTEM DIAGNOSTICS

IMPORTANT: YOU MUST DISCONNECT and LOCKOUT THE ELECTRIC SUPPLY and THE GAS SUPPLY or THE STEAM SUPPLY BEFOREANY COVERS or

GUARDS ARE REMOVED FROM THE MACHINE TO ALLOW ACCESS FOR CLEANING, ADJUSTING, INSTALLATION, or TESTING OFANY EQUIPMENT per OSHA(Occupational Safety and HealthAdministration)

STANDARDS.

ALL major circuits, including door, microprocessor temperature sensor, heat and motor circuits are monitored. The Phase 7 OPL microprocessor controller (computer) will inform the user, via the light emitting diode (L.E.D.) display of certain failure messages, along with L.E.D. indicators on the input/output (I/O) board on the back panel of the front right control door.

A. DIAGNOSTIC (L.E.D. Display) FAULT MESSAGES

CALL FOR SERVICE - Indicates a board failure.

FRONT DOOR NOT CLOSED - A front door is open when it should be closed.

REAR DOOR NOT CLOSED - A rear door is open when it should be closed.

CHECK CONTROL POWER - Indicates control power is off.

EXHAUST HIGH TEMP FAULT - Indicates the temperature in the basket (tumbler) is above 225º F (107º C). LINT DRAWER OPEN - Indicates the lint drawer is open and needs to be closed.

DRY ENABLE FAULT - Indicates the machine is not level and ALL doors are closed. Not ready to start drying. FRONT NOT DOWN - Machine is tilted back.

REAR NOT DOWN - Machine is tilted forward.

BASKET (TUMBLER) OVERLOAD FAULT - Indicates the basket (tumbler) overload has tripped open. FAN OVERLOAD FAULT - Indicates the fan overload has tripped open.

EXHAUST HI-LIMIT FAULT - Indicates the temperature disk in the exhaust has opened. FRONT SAIL SWITCH CLOSED FAULT - Front sail switch is closed and should be open. FRONT SAIL SWITCH OPEN FAULT - Front sail switch is open and should be closed. REAR SAIL SWITCH CLOSED FAULT - Rear sail switch is closed and should be open. REAR SAIL SWITCH OPEN FAULT - Rear sail switch is open and should be closed.

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