⚠️ Safety Warning: Appliance repair involves electricity, gas, and moving parts. Always disconnect power before working on any appliance.
Error Code: F20 Difficulty: Hard
Problem: No voltage detected at the heater relay.
How to Fix F20 Error (Step-by-Step)
- Unplug the dryer from the electrical outlet to ensure safety.
- Access the back of the dryer by removing the rear panel.
- Locate the heater relay, which is usually a small, black box with wires connected to it.
- Use a multimeter to test the old relay for continuity. If there is no continuity, the relay is faulty.
- Disconnect the wires from the old relay and remove it from its mounting bracket.
- Install the new heater relay and securely connect the wires.
- Reattach the rear panel and plug the dryer back into the power outlet.
- Turn the appliance off, wait about 2 minutes, then turn it back on.
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.
Most DIY parts are $50–$250. If you have a quote, use the total.
More options (for a better recommendation)
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Expert: Mike Sullivan
EPA Section 608 Certified Technician with 18+ years experience.
Read Editorial Standards →Browse all Amana error codes: Amana Error Codes


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