Dexter Laundry T-30 Guida per l'amministratore
Dexter Commerical Vended Dryer
Troubleshooting, Fault Codes, And Schematics
Starting serial number Part # 8533-076-001 11/13
2
Dryer Trouble Shooting
Tumbler turns but no spark at burner Glass fuse Check small glass control fuse in back of
dryer. Replace if failed.
Thermostat Check if voltage is passing through the
two wires attached to the temoprature
thermostat
Ignition Check for 24VAC output from transformer.
Transformer Replace if have 120V between black & white
and no 24V between red and yellow.
Over temperature Check to see if manually resettable
thermostat. Thermostat is kicked out. Reset
by pushing red reset button.
Ignition control Check for 24VAC coming into the control
on the at burner red wire. If voltage, then
check for 24VAC out on the brown wire. Also
check for spark at the ignitor. If no 24VAC
output or no spark to the ignitor, replace
ignition control.
Air Flow Switch Check air ow switch to be sure it closes
when dryer is running. If not, adjust or
replace switch.
Hi-limit Check for continuity. Should be 0 ohms
resistance when cold. If not, replace
thermostat.
Gas supply No gas can cause system lockout
Symptom Probable Cause Suggested Remedy
Tumbler does not turn Drive belts Check both drive belts. Replace if failed.
Tumbler does not turn Check capacitor and motor. Replace if failed
Door switch Check door switch contacts and adjustment.
Adjust or replace door switch.
Timer Tumbler does not turn Check to see if heat timer is turned on
Part # 8533-076-001 11/13
3
Burner Lights, but goes
on and off
Electrodes Check low voltage harness for possible wire break or cuts to
allow no signal back to ignition control
Slow drying Temperature Setting Check thermostat for correct high temperature setting.
Adjust if necessary.
Air ow restrictions necessary 1. Check lint screen and clean if necessary.
2. Check exhaust for correct length and clean if necessary.
3. Check exhaust damper to insure that it opens when dryer
is running and closes when dryer is not in use.
4. Check makeup air to insure that it is adequate. Increase
makeup air if necessary.
5. Check static Back pressure no more than .3
Manual overtemp
Tripping Frequently
Recirculating chamber Lint
Accumulation
Remove manual overtemp thermostat and inspect in
chamber for excessive lint build up. Access also gained to
this chamber by removing recirculation duct mounted at
bottom of chamber, or the panel inside burner chamber
between burners and rear back panel
Exhaust ducting Excessive lint
buildup
Remove exhaust duct at rear of dryer and inspect for
excessive lint build up in complete duct from dryer to
where duct exits building.
Clean lint from top heat air
chamber above tumbler
Remove front panel completely. Be careful of any wiring
attached. Remove heated air chamber cover and clean
above tumbler back to burner housing.
Symptom Probable Cause Suggested Remedy
Tumbler turns, ignition
sparks, no ame
Gas supply Make sure gas supply is working.
Gas pressure Make manometer check of gas pressure. Adjust if necessary.
Spark Electrode Sensor Check for damage to electrode or mounting. Replace if
necessary.
Gas valve Check coil continuity, replace valve if failed.
Ignition Control Check for 24VAC to gas valve coils. If no voltage replace
ignition control.
Dryer Trouble Shooting
Part # 8533-076-001 11/13
4
Dryer Error Codes
Symptom Probable Cause Suggested Remedy
TEMP SENSOR
SHORT
Shorted Temperature
Sensor or wire.
The dryer control shall not start until
the detected short circuit is removed.
Regardless of condition of short circuit,
Error Code will be displayed until
programming button is pressed to return
machine to idle mode.
TEMP SENSOR
OPEN
Open Temperature
Sensor or wire
The dryer control shall not start until
the detected short circuit is removed.
Regardless of condition of short circuit,
Error Code will be displayed until
programming button is pressed to return
machine to idle mode.
PCB ERROR1 Memory corrupted Power machine down and try to reset
control. Varify voltage to the control
board. Check ground to board. Replace
control board if error can not be cleared
PCB ERROR2 Analog/ Digital Error Power machine down and try to reset
control. Varify voltage to the control
board. Check ground to board. Replace
control board if error can not be cleared
COMM ERROR1 Communication Bus
Error
Power machine down and try to reset
control. Varify voltage to the control
board. Check ground to board. Replace
control board if error can not be cleared
COMM ERROR2 No Dryer Model Selected This error occurs when a pin combination
on the model selection header is used
that does not have a model designated
for it. check connector marked Jumpers
on the control board.
COMM ERROR7 Communication Bus
Error
If connected to DexterLive, Disconnect
cable, and preform a soft restart by
holding down the program button on
power up.
Preform Soft restart.
contact your Dexter factory representive.
Fuse Error Internal Control program
Error.
Internal IC issue. Replace control.
Part # 8533-076-001 11/13
5
Wiring Diagram for 60hz Dryer -10
Part # 8533-076-001 11/13
6
Wiring Schematic for 60hz Dryer -10
Part # 8533-076-001 11/13
7
Wiring Schematic for 50hz Dryer -39
Part # 8533-076-001 11/13
8
Wiring Schematic for 50hz Dryer -39
Part # 8533-076-001 11/13
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