American Dryer Corp. MDG-75 User Manual

Page 51

E. Blower and 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 and fan) motor contactor (relay).

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

c. Failed blower (fan and 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 and 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 and fan)...out of balance.

G. Both drive motor and blower (impellor and 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 and impellor] and drive).

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

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

(does not start)...microprocessor (computer) L.E.D. (light emitting diode) motor indicator dots

and the door L.E.D. indicator are on but the relay output L.E.D. indicators are off (micropro-

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

1. Failed microprocessor controller (computer).

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

(computer) L.E.D. (light emitting diode) display continue to read time or percent of extraction and

ALL indicator dots are off...

1. Fault in main door switch circuit ...

a. Main door switch circuit out of adjustment.