Dexter Laundry T-300 Operators Manual Installation & Operation Instructions page 103

Symptom
Machine does
not start
Primary Control Transformer
Check wiring between PCB
Check Door Locking Motor
Machine will
not accept and
count coins
Door Closed Safety Switch
Door Handle Closed Switch
Control Breaker or fuse
Door does not
Check display for fault code
lock
Door will not
open
8514-300-001 REV PR
Probable Cause
Power supply
Door Switch
Secondary Control
Transformer Breaker
Fuse
Control Transformer
Coin Acceptor
Check PCB board
Check Relay PCB
Coin Acceptor
Power Supply
Main PCB
Door locking motor
Door Switch
Thermoactuator
Check these areas: Circuit breakers, Voltage, Power leads, Power
connec ons. Is front display LED showing a dollar amount?
Check for con nuity through door switch when door is closed. If no
con nuity, adjust or replace door switch.
Check circuit breaker (50 Hz: 7 amp) to see if tripped. If tripped, reset the
circuit breaker.
Check fuse (50 Hz: 2.0 amp) for con nuity. If no con nuity, replace fuse.
Check voltage output from control transformer for 24VAC (50 Hz). If
voltage is incorrect, replace transformer.
Check coin acceptor switch for any type of blockage or damage. Clean,
adjust or replace the acceptor.
Check all wire connec ons for loose contacts.
Check data cable. This is the cable with the phone type connectors on the
main PCB control and the VFD. With the power removed unplug and check
for damage, replug and retry washer.
Check all wire connec ons for sure contact.
Check that 24 VAC (50 Hz) power is at motor a er start bu on is pushed.
Check coin acceptor switch for any type of blockage or damage. Clean,
adjust or replace the acceptor.
Check these areas: Circuit breakers, Voltage, Power leads, Power
connec on
Check door closed switch at door hinge for proper opera on.
Check single door closed switch at le side of door handle to close when
handle is ver cal.
Check breaker or fuse for con nuity. If no con nuity, replace breaker or
fuse.
Replace
Does "DOOR LOCK ERROR" show on the front of display? If yes follow tests
described in fault code sec on.
Check to ensure that motor is receiving 24 VAC (50 Hz) from main relay
PCB. If it is, replace motor.
Check for con nuity through door latch switch when door closed. If no
con nuity, adjust or replace door switch.
Check to see if thermoactuator and its mechanism are stuck or binding
and not allowing the door lock motor to open. Check to be sure that the
locking thermoactuator is not receiving 24 VAC (50 Hz) during the last 1
1/2 minutes of the cycle. Also check to see that the unlocking
thermoactuator is receiving 24 VAC (50 Hz) during the last minute of the
cycle. If the thermoactuators do not receive voltage at the correct mes,
change the PCB relay board. If the ming and voltage are correct, replace
the thermoactuator.
Suggested Remedy
103