Error code · Microwave

Whirlpool Built-In Microwave Error F1 and What to Do: Oven Temperature Sensor Circuit

Medium · inspection needed

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

What F1 means

F1 on a Whirlpool built-in microwave or microwave drawer, such as model WMC50522AS, tells you the control found a problem that may be in the oven temperature sensor, the control itself, or the wiring between them. It is the short form of the older F01 code and follows the same guidance. The display shows F1 and the oven may stop heating or refuse a new cycle. The code does not prove that any part has failed.

Common causes of F1

Oven temperature sensor
Control board
Wiring and connectors in the sensor circuit

✓ One safe check you can try

1. Switch the circuit breaker for the microwave off and wait one minute. 2. Switch it back on. 3. Stay near the oven for a minute and check that F1 does not return. 4. If the display is clear, run a short cycle to verify operation. 5. If F1 shows again, stop using the oven until it is checked.

! Why to stop there

We separate a poor sensor reading from a control that misreads it by testing the sensor circuit.
An F1 that appears only after the oven warms up suggests a connection that changes with heat.
The price is in writing before we start.

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

LOCWhirlpool Microwave LOC on the Display: Control Lock Is On PFWhirlpool Over-the-range Microwave Showing PF: Power Failure Indicator Press Cancel to ResetWhirlpool Built-in Microwave Message "Press Cancel to Reset": Error Cleared by Cancel F8 E4Whirlpool Microwave Drawer Error Code F8 E4: Exhaust Air Temperature Sensor Probe or Insert ProbeWhirlpool Built-in Microwave Asking for "Insert Probe": Seat the Meat Probe F8E5Whirlpool Microwave Code F8E5: Exhaust Air Temperature Sensor PUSH or PSHWhirlpool Built-in Microwave Shows PUSH or PSH: Press Start F9Whirlpool OTR Microwave Error F9: Control and Relay Boards

F1F1 questions

Does F1 point to a different part than F01?

On these built-in models the guidance is the same: oven temperature sensor, control and wiring. The different format does not point to a different part.

Does F1 ever clear by itself?

A reset can clear a brief glitch. If F1 returns, the circuit still has a problem, and we test it to find out whether it is the sensor, the control or the wiring.

What will you check first?

We start with the sensor reading and its connector, because those are the simplest to confirm, then the control. We tell you the result before pricing the repair.

Book a visit

Still seeing F1?

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

(713) 589-6107