Common Troubleshooting Solutions
Common Troubleshooting Solutions
Symptom Probable Cause Suggested Remedy
Machine
does not
start
Power Supply
Check these areas: Circuit breakers, Voltage, Power leads,
Power connections. Is front display LED showing a dollar
amount.
Door Switch
Check for continuity through door switch when door is
closed. If no continuity, adjust or replace door switch.
Control Breaker
Check 1.5 amp (T-950 and T-1200 use 2.5amp) breaker or
fuse for continuity. If no continuity, replace breaker or fuse.
Control Transform-
er (3 Phase Only)
Check voltage output from control transformer for 120VAC.
If voltage is incorrect, replace transformer.
Start Switch
When actuated there must be continuity through the con-
tacts on the start switch.
Pause-Run Switch Must be in Run position and should have continuity through
the switch.
Off-On Switch
Check the continuity in “On” Position. If no continuity, adjust
or replace switch.
Timer
Check to insure the timer is in the “off” position to sup
-
ply 120VAC throught the Start cam to the coin accumulator
board.
Timer, Rapid Ad-
vance Motor
Check the rapid advance motor for continuity and replace if
no continuity.
Door does
not lock
Timer Position
The following sequence must have taken place to advance
the timer before the door locks:
1. Loading door closed
2. Proper number of coins inserted to start machine
3. Accumulator counted and credited coins to advance timer
into cycle closing on-off timer contact.
Door locking Sole-
noid
Check to insure that Solenoid is receiving 120VAC from main
S1 door switch. If it is, replace solenoid.
Door Switch
Check for continuity through door latch switch when door
closed. If no continuity, adjust or replace door switch.
Symptom Probable Cause Suggested Remedy
Door will
not open
Thermoactuator
Check to see if thermoactuator(s) and/or its mechanism is
stuck or binding and not allowing the door lock gear motor
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 not receive voltage at the correct
times, change the timer. If the timing and voltage are cor-
rect, replace the thermoactuator.
Door Rod
Check to see that door rod from solenoid to lock ass y is
long enough to allow lock ass y to disengage. If not, adjust
rod.
Door Locking So-
lenoid
Check that door lock solenoid is not stuck closed. If stuck,
replace solenoid.
Timer
Make sure machine is in off position allowing Timer to autho
-
rize door unlock.
Machine
starts but
timer will
not advance
Main Timer Drive
Motor
If 120VAC is supplied to timer motor, but it doesn’t operate,
replace timer motor.
Water Valves
Check to ensure that water valves are operating. If not,
check for 120VAC to water valve from timer. If 120VAC,
clean screens. If still no operation, change water valve. If no
voltage, check pressure switch then change timer.
Drain Valve
Check to ensure that drain valve is closing. If not, check
for 120VAC to drain valve from timer. If 120VAC, change or
clean drain valve. If no voltage, change timer.
Fill Hose Screens
& Water Valve
Screens
Check all screens for obstructions and clean.
Water
Check to ensure that water is turned on and operating.
Pressure Switch
Hose
Check hose for holes. Be sure the inlet end of the large part
of the hose is lower than the rest of the hose and is free of
debris.
Pressure Switch
Check to ensure that pressure switch has continuity be-
tween #21 and #22 and #11 and #12. If no continuity,
check pressure switch hose for obstruction. If hose is clear,
change pressure switch.
No hot
water in
detergent
dispenser
Water Valve Coil
Check coil continuity at terminals and replace if no continu-
ity. 120 V power only on for 20 second in wash bath.
Water Inlet
Screens
Check water inlet screens for blockage and clean screens if
necessary.
Water
Check to insure that water is turned on and operating.
Timer
Advance to wash, check for voltage on red/org in from timer.
If not voltage, replace timer.
Pause-Run Switch Check in “Run” position for continuity. If no continuity, re-
place switch.
48
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Part # 8533-031-001 6/22
Part # 8533-031-001 6/22
Machine
Mounting
Installation
& Operation
Trouble-
shooting
Machine
Service
Electrical
Wiring
Parts
Data
Coin
Handling
Maintenance
