Error code · Microwave

Whirlpool Built-In Microwave Code F1 E6 After a Power Reset: Thermistor Reading

Medium · inspection needed

Code: F1 E6
Appliance: Microwave
Brand: Whirlpool
Warranty: 30-day workmanship

What F1 E6 means

F1 E6 on a Whirlpool built-in microwave or microwave drawer, such as model WMC50522AS, means the control has reported a problem that may involve the microwave thermistor or sensor, or the associated wiring. A thermistor is a temperature-sensing part, and the control uses it to stay within safe limits. The display shows F1 E6 and the oven may stop or decline to start. The code names the circuit to test, not a confirmed bad sensor.

Common causes of F1 E6

Microwave thermistor or sensor
Wiring and connector to the sensor
Control reading the sensor

✓ One safe check you can try

1. Switch off the breaker for the microwave and wait one minute. 2. Switch it back on. 3. Watch the oven for one minute to make sure F1 E6 does not return. 4. Run a short cycle to verify normal operation. 5. If the code returns, stop using the oven.

! Why to stop there

We check the thermistor reading and its wiring because both can give the same display code.
A reading that drifts only when the oven warms up suggests a connection or sensor affected by heat.
You see the finding and a written price before any work.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

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Other Microwave codes

FC E1Whirlpool Over-the-range Microwave Wi-Fi Code FC E1: Weak Signal FC E2FC E2 on a Whirlpool OTR Microwave: Router Connection Lost FC E3Whirlpool Over-the-range Microwave Showing FC E3 for Wi-Fi: Module Check FC E7Whirlpool OTR Microwave Connection Code FC E7: Appliance Not Reaching the Internet FC E8Whirlpool OTR Microwave Registration Code FC E8: Entry Mistake FCE8Whirlpool Over-the-range Microwave Registration, FCE8: Wrong Model Selected Feature Not Available or Fault DetectedWhirlpool Built-in Microwave Message "Feature Not Available": Retry or Cut Power LOCWhirlpool Microwave LOC on the Display: Control Lock Is On

F1 E6F1 E6 questions

What is a thermistor in a microwave?

It is a small sensor whose resistance changes with temperature. The control reads it to watch for heat, and F1 E6 says that reading may have a problem.

Is F1 E6 the same as the F1 temperature code?

No. Plain F1 refers to the oven temperature sensor circuit. F1 E6 refers to the microwave thermistor or sensor, so we test a different part of the oven.

Can this be repaired on an older unit?

Often yes. Sensors and connectors are common repairs, and we tell you plainly when a repair does not make sense, with a written price before any work begins.

Book a visit

Still seeing F1 E6?

A technician diagnoses it on site and gives you the price in writing before any work starts.

(713) 589-6107