continued from page 52

c.Failed lint drawer switch.

d.Failed main door switch.

e.Broken connection/wire in main door or lint drawer switch circuit.

4.Failed push to start relay.

5.Failed 24 VAC 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 drive motor.

C.Drive motor (reversing) operates in one direction only...stops and restarts in same direction...

1.Failed reversing contactor (relay).

2.Failed reversing timer.

D.Drive motor operates okay for a few minutes, and then stops and will not restart...

1.Motor is overheating and tripping out on overload protector ...

a.Motor air vents clogged with lint.

b.Low voltage to the motor.

c.Failed motor.

d.Tumbler (basket) is binding...check for obstruction.

e.Failed idler bearings or tumbler bearings.

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

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

2.Failed blower (impellor/fan) motor.

F.Blower motor operates okay for a few minutes, and then stops and will not restart...

1.Motor is overheating and tripping out on overload protector ...

a.Motor air vent is clogged with lint.

b.Low voltage to motor.

continued on page 54

53

Page 57
Image 57
American Dryer Corp MD-170 manual Failed drive motor contactor relay