⚠️ Safety Warning: Appliance repair involves electricity, gas, and moving parts. Always disconnect power before working on any appliance.
Error Code: Dryer Difficulty: Easy
Problem: Exhaust thermistor open circuit or out-of-range resistance
How to Fix Dryer Error
- Disconnect power and remove rear panel.
- Locate exhaust thermistor WP3392519 mounted on exhaust duct near heater outlet.
- Disconnect wiring harness from thermistor terminals.
- Set multimeter to resistance mode and measure across thermistor leads.
- At room temperature (70°F/21°C), expected reading is 10k-12k ohms. Acceptable range: 5k-20k ohms depending on ambient temperature.
- If reading shows open circuit (OL/infinite) or short circuit (near 0 ohms), thermistor has failed.
- Remove mounting screw securing thermistor to duct wall.
- Extract old thermistor and install new WP3392519, ensuring sensor tip protrudes fully into air stream.
- Reconnect wiring harness with terminals fully seated.
- Reassemble dryer and run test cycle—exhaust temperature should read 135-155°F on cotton setting. Verify in diagnostic mode if available.
Recommended Replacement Part
Still Not Working?
If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.
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Expert: Mike Sullivan
EPA Section 608 Certified Technician with 18+ years experience.
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