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Error code reference
Kenmore Dryer Error Code EF3
Max timeout timer exceeded; exhaust blocked, or Exhaust Control Thermistor, Inlet Control Thermistor, Contact Sensor, or Electronic Control Board defective.
SourceKenmore Frigidaire Dryer - Tech Sheet: Error Codes & Diagnosticsp. 2
Diagnostic procedure
The full EF3 procedure
Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.
MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Check vent restriction, Contact Sensor, and resistance values of Exhaust Control Thermistor and Inlet Control Thermistor.
SourceKenmore Frigidaire Dryer - Tech Sheet: Error Codes & Diagnosticsp. 2
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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