Error code · Microwave

Whirlpool Built-In Microwave Code F3 E1: Lower Oven Sensor Check

Medium · inspection needed

Code: F3 E1
Appliance: Microwave
Brand: Whirlpool
Warranty: 30-day workmanship

What F3 E1 means

F3 E1 turns up on a Whirlpool built-in microwave or drawer unit (WMC50522AS is a listed example) when the control cannot trust the lower oven temperature sensor, or when the board or the wiring to the sensor is the problem. The oven displays the code and stops behaving normally. The manufacturer gives only a power reset for F3 E1, so we treat it as a sensor circuit to examine and not a confirmed failed part.

Common causes of F3 E1

Lower oven temperature sensor
Sensor wiring and plug
Control board

✓ One safe check you can try

1. Set the microwave's breaker to off, wait a minute, then set it to on. 2. Check the display immediately. 3. Check it again a minute later. 4. If F3 E1 is gone, a short normal cycle shows whether the oven works. 5. A returning code means the oven stays off.

! Why to stop there

If the code returns, the control is still seeing the sensor circuit wrongly, and we need to find out why.
We test the sensor connection first, then the control.
You get the finding explained and a written price before anything is replaced.

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 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 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

F3 E1F3 E1 questions

Which sensor does F3 E1 mean?

The lower oven temperature sensor. The control reads it to know the temperature in the lower part of the oven, and F3 E1 says that reading or its wiring is not right.

Can I just ignore F3 E1 if the microwave still runs?

Not for long. A control that reports a temperature sensor problem may not regulate heat correctly. Should the code return, put the oven out of use and have it checked.

What will it cost?

After diagnosing, we give the price in writing before any repair, and the decision is yours. Work we complete is covered by a 30-day workmanship warranty.

Book a visit

Still seeing F3 E1?

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

(713) 589-6107