Common Troubleshooting Solutions - Dexter Laundry T900 Parts & Service Manual

Common Troubleshooting Solutions

Symptom Probable Cause
Machine Power Supply
does not
start
Door Switch
Control Breaker or
Fuse
Control Trans-
former
Coin Acceptor
Check PCB board
Check wiring be-
tween PCB
Check Relay PCB
Check Door Motor
Machine will Coin Acceptor
not accept
and count
Power Supply
coins
Door Closed Safety
Switch
Door Handle
Closed Switch
Control Breaker or
fuse
Main PCB
Door does Check display for
not lock fault code
Door locking Motor Check to insure that Motor is receiving 120VAC from main
Door Switch
Door will Thermoactuator
not open
54
Part # 8533-081-001 1/18
Suggested Remedy
Check these areas: Circuit breakers, Voltage, Power leads,
Power connections. Is front display LED showing a dollar
amount.
Check for continuity through door switch when door is
closed. If no continuity, adjust or replace door switch.
Check 1.5 amp (T-950 and T-1200 use 2.5amp) breaker or
fuse for continuity. If no continuity, replace breaker or fuse.
Check voltage output from control transformer for 120VAC.
If voltage is incorrect, replace transformer.
Check coin acceptor to make surethere is no blockage or
damage. clean or replace acceptor.
Check all wire connections for sure 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 connections for sure contact.
Check that 120 v power is at Motor after start button is
pushed.
Check coin acceptor switch for any type of blockage or dam-
age. Clean, adjust or replace the acceptor.
Check these areas: Circuit breakers, Voltage,Power leads,
Power connection.
Check door closed switch at door hinge for proper operation.
Check single door closed switch at left side of door handle
to close when handle is vertical.
Check breaker or fuse for continuity. If no continuity, re-
place breaker or fuse. The T-300 through T-950 use the 1.5
amp fuse. The T-1200 and t-1450 uses A 2.5 amp fuse.
Replace
Does Door Lock Error show on the front of display. If yes fol-
low tests described in fault code section.
relay PCB. If it is, replace solenoid.
Check for continuity through door latch switch when door
closed. If no continuity, adjust or replace door switch.
Check to see if thermoactuator(s) and/or its mechanism is
stuck or binding and not allowing the door lock solenoid to
open. Check to be sure that the locking thermoactuator is
not receiving 120VAC during the last 1 1/2 minutes of the
cycle. Also check to see that the unlocking thermoactuator
is receiving 120VAC during the last minute of the cycle. If
the thermoactuators do
times, change the timer. If the timing and voltage are cor-
rect, replace the thermoactuator.
not receive voltage at the correct