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450260-1 www.amdry.com 45
Microprocessor Controller
(Computer) Board Display Reads
FRONT DOORS NOT CLOSED or
REAR DOORS NOT CLOSED ________
Fault (open circuit) in front or rear door switch circuit.
One (1) of the front or rear door switches has failed.
One (1) of the front or rear door switch contact magnets
is either missing or is broken.
Broken wires or connection in front or rear door.
Front or rear doors are opened during cycle.
Failed microprocessor controller (computer) I/O board.
Microprocessor Controller
(Computer) L.E.D. Displays Lint
Drawer Open ________________________
Lint drawer is not closed all the way.
Lint drawer switch is out of proper adjustment.
Failed lint drawer switch.
Failed microprocessor controller (computer) I/O board.
Broken wire connection from lint switch to microprocessor
controller (computer).
Microprocessor Controller
(Computer) Will Not Accept Any
Keyboard (Touch Pad) Entries, (i.e.,
L.E.D. Display Reads READY and
When Keyboard [Touch Pad] Entries
are Selected, the L.E.D. Display
Continues to Read READY) ________
Failed keyboard (touch pad) label assembly.
Failed microprocessor controller (computer) display
board.
Microprocessor Controller
(Computer) Will Only Accept Certain
Keyboard (Touch Pad) Entries ______
Failed keyboard (touch pad) label assembly.
Failed microprocessor controller (computer) display
board.
Microprocessor Controller
(Computer) Locks Up and the Display
Reads Erroneous Messages or Only
Partial Segments ____________________
Transient power voltage spikes:
disconnect the electrical power to the
dryer, wait 1 minute and reestablish
power to the dryer. If problem is still
evident:
Failed microprocessor controller (computer).
Failed keyboard (touch pad) label assembly.
Blower (Fan and Impellor) Motor
Operates Okay for a Few Minutes
and Then Either Repeatedly or
Occasionally Trips the Overload
Protector _____________________________
Note
When the overload protector trips, the microprocessor
controller (computer) I/O board red light emitting
diode (L.E.D.) FNOL will be off and the display will
read Fan Overload Fault.
Motor is overheating.
Motor air vents clogged with lint.
Failed motor.
Basket (tumbler) is binding; check for an obstruction.
V-belts are too tight.
Motor is running at incorrect voltage.
Failed overload protector.
Incorrect overload setting.
Failed motor (blower [fan and impellor]
motor).
Failed microprocessor controller
(computer).
Microprocessor Controller
(Computer) Display Board L.E.D.
Display Reads BAD PROBE
Continuously and the Buzzer (tone)
Sounds Every 30-seconds ___________
Fault in microprocessor heating
sensing circuit.
Failed microprocessor temperature sensor.
Failed microprocessor controller (computer) display
board.
Broken wire or connection between the microprocessor
controller (computer) and the microprocessor
temperature sensor.
Microprocessor Controller
(Computer) L.E.D. Display Reads
DRY ENABLE Fault _________________
Front or rear doors open.
Microprocessor not getting a door closed signal.
Dryer is not in level position.
Broken connection between level switches or door
switches.
Level switches or door switches need to be adjusted.
Input to Programmable Logic Controller (PLC) is not
present.
PLC does not have supply power.
Failed PLC.
Failed microprocessor controller (computer) I/O board.
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