American Dryer Corp. AD-75 User Manual

Page 59

E. Blower/Fan motor is not operating (does not start)...

1. Microprocesssor controller (computer) motor indicator dot and relay output L.E.D. (light emitting

diode) indicator dots are on ...

a. Failed blower (impellor/fan) motor contactor (relay).

b. Failed arc suppressor (A.S.) board.

c. Failed blower (fan/impellor) motor.

2. Microprocessor controller (computer) "door" L.E.D. is on but motor output L.E.D. indicator is off...

a. Failed microprocessor controller (computer).

F. Blower/Fan motor (Reversing Models ONLY) operates okay for a few minutes, 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 motor.

c. Failed motor.

d. Failed blower (impellor/fan)...out of balance.

G. Both drive motor and blower (impellor/fan) motor (Reversing Models ONLY) not operating

(does not start) ... microprocessor (computer) motor indicator dots and relay output L.E.D.

(light emitting diode) indicators are on...

1. Failed arc suppressor (A.S.) board.

2. Failed contactors (both blower [fan/impellor] and drive ).

3. Failed motors (both blower [fan/impellor] motor and drive motor).

H. Both drive motor and blower (impellor/fan) motor (Reversing Models ONLY) not operating

(does not start) ... microprocessor (computer) L.E.D. motor indicator dots and the door

L.E.D. indicator are on but the relay output L.E.D. indicators are off (microprocessor

controller [computer] L.E.D. display does not read door)...

1. Failed microprocessor controller (computer).

I. Both drive motor and blower (impellor/fan) motor run a few minutes and stop ... micro-

processor (computer) L.E.D. display continue to read time or percent of extraction and ALL

indicator dots are off...

1. Fault in main door switch circuit ...