F28
Maytag
Moisture Sensor Open or Shorted
Dryer displays F28 and may not start or may stop unexpectedly.
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Possible Causes
Broken moisture sensor bars, Sensor wires disconnected, Lint or fabric softener coating on sensor bars, Failed sensor harness
How to Fix / Troubleshooting
Safety First: Unplug the dryer before servicing. Interior edges can be sharp.
- Step 1 – Locate moisture sensors: The sensor bars are typically two metal strips inside the drum on the front bulkhead, just below the lint screen opening.
- Step 2 – Clean sensor bars: Using a soft cloth and rubbing alcohol, thoroughly clean the sensor bars to remove any waxy fabric softener residue that can interfere with readings.
- Step 3 – Inspect for damage: Check that both bars are intact and not broken or loose. Inspect the screws securing them.
- Step 4 – Check wiring: From the front or rear (depending on model), access the back of the sensor bars and verify the harness is connected and not damaged.
- Step 5 – Continuity test: Disconnect the harness and test continuity through each bar and its wiring. Repair or replace any open sensor bar or harness.
- Step 6 – Test operation: Reassemble, restore power, and run an automatic (sensor) dry cycle with a small load to confirm proper operation and that F28 does not reappear.
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Repair Difficulty
Easy
2/5
Required Part
Moisture Sensor Bars
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