Whirlpool Microwave Error Code F6 — Microwave Relay Failure
What this means
The F6 error code on Whirlpool microwaves indicates the relay that controls power to the magnetron (the component that generates microwave energy) has failed. The relay is located on the main control board and acts as a high-power switch. When it fails, the microwave runs (turntable turns, light comes on) but cannot heat food. This is typically caused by relay contact wear from normal use or a power surge.
Step-by-step fix
3 stepsVerify the symptom
Try heating a cup of water for 1 minute. If the turntable spins, the light comes on, but the water doesn't get warm, the relay or magnetron circuit has failed.
If absolutely nothing happens when you press Start, the issue may be elsewhere (door switch, fuse).
Power cycle the microwave
Unplug for 5 minutes and try again. In rare cases, a relay can temporarily stick and a reset frees it.
This is a long shot but worth trying before scheduling service.
Schedule professional repair
The relay is on the main control board inside the microwave cabinet. Due to high-voltage components, this repair requires a trained technician.
Provide the F6 code and model number when scheduling service.
When to call a professional
This repair requires opening the microwave cabinet and working near the high-voltage capacitor. Always hire a professional.
Related error codes
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
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