Amana dryer moisture sensor bars
Use if the bars are damaged, corroded, or still read shorted after cleaning.
$12-$35
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F29 on an Amana dryer is a moisture sensor circuit fault. On many Whirlpool-built Amana dryers, the moisture sensor bars sit near the lint screen housing inside the drum. If the control reads those bars as shorted, it can stop the cycle or refuse to start a sensor-dry cycle.
Start with cleaning and wiring checks. F29 is exactly the kind of code that can look like a bad board when the real problem is residue across the sensor bars.
Quick Checks
| Check | What to look for | What it means |
|---|---|---|
| Sensor bars | Dryer sheet film, lint, corrosion | Clean and retest before parts |
| Drum area | Wet clothing or metal debris | Anything bridging the bars can fault |
| Harness | Pinched or loose sensor wires | Repair wiring before replacing board |
| Vent path | Weak airflow or lint packed nearby | Clear lint and run a timed cycle |
| Control board | Burn marks or repeat fault | Diagnose only after sensor tests |
Fix F29
- Unplug the dryer. Do not work inside the cabinet with power connected.
- Remove lint from the screen, chute, and area around the moisture sensor bars.
- Wipe the two metal sensor bars with rubbing alcohol on a clean cloth.
- Let the drum and bars dry completely, then run a timed-dry test.
- If F29 returns, unplug the dryer again and inspect the sensor harness for loose terminals, rubbed insulation, or corrosion.
- Test the sensor circuit with a multimeter. The bars should not read shorted together when clean and dry.
- Replace damaged sensor bars or wiring. Consider the main control only if the sensor circuit tests correctly and F29 still returns.
When F29 Shows With Slow Drying
If the dryer also takes too long to dry, clean the vent before replacing sensors. A restricted vent overheats the cabinet and pushes lint into places it should not be.
Do not bypass the thermal fuse, thermostat, thermistor, or moisture circuit. Those parts keep the dryer from overheating and help the control stop at the right time.