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Error code · Microwave

What F4 E6 Means on a Whirlpool Built-In Microwave: Wave Guide Temperature Sensor

When a Whirlpool built-in microwave or microwave drawer such as WMC50522AS shows F4 E6, the control has a problem with the microwave wave guide temperature sensor or its wiring. The wave guide carries microwave energy from…

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Code
F4 E6
Appliance
Microwave
Brand
Whirlpool
Warranty
30-day workmanship

What F4 E6 means

When a Whirlpool built-in microwave or microwave drawer such as WMC50522AS shows F4 E6, the control has a problem with the microwave wave guide temperature sensor or its wiring. The wave guide carries microwave energy from the magnetron into the oven, and the sensor watches its temperature. The brand gives a power reset and no failed part, so F4 E6 is a sensor circuit to test before the oven is used again.

Common causes of F4 E6

  • Wave guide temperature sensor
  • Wiring and connector for that sensor
  • Control board reading the sensor
✓ One safe check you can try

1. Keep the microwave idle while F4 E6 is displayed. 2. Switch off its breaker for one minute and switch it on again. 3. Check the display for a further minute. 4. If it stays clear, try a brief cycle. 5. If F4 E6 comes back, leave the microwave off and call us.

! Why to stop there
  • A reset cannot show whether the sensor, its wiring or the control is giving the wrong reading.
  • Because the sensor tracks heat in the microwave path, we check the circuit before the oven runs again.
  • The price is written and agreed before 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

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 Registration ErrorWhirlpool Over-the-range Microwave "Registration Error": Network Checks F9 or F9E0Whirlpool Built-in Microwave Codes F9 and F9E0: Home Power Supply
F4 E6F4 E6 questions
What is the wave guide?

It is the channel that carries microwave energy from the magnetron into the cooking space. F4 E6 means the control has a problem with the temperature sensor monitoring it.

Is F4 E6 a safety warning?

The brand does not call it one. It does concern a temperature sensor on a part that makes heat, so we are cautious and advise against running the oven if the code returns.

What should I do while waiting for the visit?

Keep the breaker off or the microwave unused, keep the door closed, and note the model number. We will test the sensor circuit when we arrive.

Book a visit

Still seeing F4 E6?

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

(713) 589-6107