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Dryer Troubleshooting: Error Codes and Symptoms, Lecture notes of Communication

Shelton State Community CollegeCommunication

A comprehensive list of error codes and their corresponding symptoms for various issues with dryers. It includes suggested remedies for each problem, ranging from checking drive belts and door switches to replacing control boards and thermostats. This information can be useful for both DIY repairs and for identifying the specific issue for professionals.

Typology: Lecture notes

2021/2022

Uploaded on 09/12/2022

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Dryer Error Codes
Symptom Probable Cause Suggested Remedy
TEMP SENSOR
SHORT
F1
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
F2
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
F3
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.
pf3
pf4
pf5

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Dryer Error Codes

Symptom Probable Cause Suggested Remedy

TEMP SENSOR

SHORT

F

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 F 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 ERROR F 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.

DRYER TROUBLESHOOTING

Symptom Probable Cause

Suggested

Remedy

Tumbler does not turn Drive belts Check both drive belts. Replace if failed. Drive motor Check capacitor and motor. Replace if failed Door switch Check for door closed L.E.D on control board. Check door switch contacts and adjustment. Adjust or replace door switch. Electronic control Is electronic control closing motor relay to power drive motor? Check for motor light on electronic control. If no light and time counting down, change control. If light is on, check for proper voltage and wiring to motor relay in rear control compartment. Motor run relay Test for proper voltage to run relay coil, Test output voltage of relay when contacts ingauged. if no voltage replace relay.

Symptom Probable Cause Suggested Remedy

Tumbler turns, ignition sparks, no flame 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. 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 program for correct high temperature setting. Adjust if necessary. Air flow 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. Temperature sensor The temperature sensor should have between 30,000 ohms and 60,000 ohms resistance at room temperature if okay. Replace if not in this range.

Symptom

Probable

Cause

Suggested Remedy

Erratic display Initial start-up If erratic on initial start-up, leave power on for approximately one hour and check machine operation again. Grounding Machine must be grounded by separate conductor back to neutral bar in breaker box. Program Check program and make corrections if necessary. Voltage spike Power down machine for 20 seconds and repower. If no improvement, replace control. 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 linto of of 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.