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20 American Dryer Corporation 450431-3
To Replace Lint Drawer Switch
Disconnect electrical power to the dryer.
Remove lint drawer and lint door.
Disconnect both 4-pin connectors at the rear of the lint switch
cover.
Remove the one or two screws holding the lint switch cover
on.
Remove lint switch cover and disconnect the two terminals
of the switch.
Remove switch by pressing tabs together and push switch
out.
Install new switch by reversing procedure.
No L.E.D. display on microprocessor controller
(computer)...
Open circuit breaker switch or blown fuse.
Tripped blower motor overload.
Faulty wiring connection.
Faulty transformer.
“Emergency Stop” (E-Stop) button is depressed.
Faulty microprocessor controller (computer).
Computer will not accept keypad entries...
Keypad ribbon is not plugged into computer securely.
Faulty keypad.
Faulty microprocessor controller (computer).
Dryer will not start, but computer
L.E.D. indicators are on...
Failed contactors.
Failed arc suppressor board.
Failed microprocessor controller (computer).
Failed motors.
Blower motor runs, burner is on,
but tumbler will not turn...
Broken, damaged or loose V-belt.
Damaged or misadjusted drive wheels.
Loose or broken pulley.
Dryer operates but is taking too long to dry...
Improperly programmed microprocessor controller
(computer).
An inadequate exhaust ductwork system.
Restriction in exhaust system.
Insufficient make-up air.
Dirty or clogged lint screen.
Washing machine extractors are not performing properly.
The supply gas may have a low heating value, check with
local gas supplier.
Failed temperature sensor (temperature calibration is
incorrect).
Failed microprocessor controller (computer).
Thermal overload for drive motor is tripping...
Either an exceptionally low or high voltage supply.
Motor bearing failure.
Motor vents are blocked with lint.
Failed motor.
Failed overload.
Insufficient make-up air.
▲ WARNING
!
All service and troubleshooting should be
performed by a qualified professional or service
agency.
While making repairs, observe all safety
precautions displayed on the dryer or specified in
this manual.
Troubleshooting ______________________
IMPORTANT: You must disconnect and lockout the
electric supply and the gas supply or the steam supply
before any covers or guards are removed from the
machine to allow access for cleaning, adjusting,
installation, or testing of any equipment per OSHA
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.
IMPORTANT: When replacing blown fuses, the
replacement must be of the exact rating as the fuse being
replaced. The information provided should not be
misconstrued as a handbook for use by an untrained
person in making repairs.