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Error code · Microwave

Whirlpool Microwave Drawer Error Code F8 E4: Exhaust Air Temperature Sensor

Built-in Whirlpool microwaves and microwave drawers, for instance WMC50522AS, may show F8 E4, which names the exhaust fan air temperature sensor or its wiring. Unlike F8 E0 through F8 E3, this code is about reading the…

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Code
F8 E4
Appliance
Microwave
Brand
Whirlpool
Warranty
30-day workmanship

What F8 E4 means

Built-in Whirlpool microwaves and microwave drawers, for instance WMC50522AS, may show F8 E4, which names the exhaust fan air temperature sensor or its wiring. Unlike F8 E0 through F8 E3, this code is about reading the temperature of the air that leaves the unit. You see F8 E4 and the microwave stops its function. It is a circuit report, and it does not show that the sensor has failed.

Common causes of F8 E4

  • Exhaust fan air temperature sensor
  • Sensor wiring and connectors
  • Control reading of the exhaust temperature
✓ One safe check you can try

1. Cut power to the microwave at its breaker and let a minute pass. 2. Restore the power. 3. Keep looking at the display for a minute for any return of F8 E4. 4. If the display stays calm, run a normal cycle to be sure the unit heats and responds as it should.

! Why to stop there
  • A reset cannot show whether the sensor reading or its wire is the problem, so F8 E4 coming back means a circuit test.
  • We compare the sensor signal with what the control expects before changing a part.
  • The written price comes first, and the 30-day workmanship warranty covers what we finish.
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.
→Same appliance

Other Microwave codes

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 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
F8 E4F8 E4 questions
What is the exhaust air temperature sensor?

It measures the temperature of the air leaving the unit. F8 E4 means that sensor or its wiring is reporting trouble. We test the circuit to see which.

Is F8 E4 the same as F8E5?

They name the same sensor on different unit styles. F8 E4 is the code shown on built-in units, and F8E5 is the related code shown by built-in and over-the-range models.

Do I need to leave the unit off?

If F8 E4 returns after a reset, yes, until we have checked it. It is a temperature-related report and we would rather confirm the circuit.

Book a visit

Still seeing F8 E4?

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

(713) 589-6107