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Error code · Wall Oven

Whirlpool Wall Oven Code F4 E3: Exhaust Air Temperature, Microwave Side

F4 E3 on a Whirlpool built-in wall oven with a microwave section, such as the WOC54EC7HS, relates to the microwave exhaust air temperature sensor or its wiring. That sensor lets the oven know how warm the…

Medium · inspection needed
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Code
F4 E3
Appliance
Wall Oven
Brand
Whirlpool
Warranty
30-day workmanship

What F4 E3 means

F4 E3 on a Whirlpool built-in wall oven with a microwave section, such as the WOC54EC7HS, relates to the microwave exhaust air temperature sensor or its wiring. That sensor lets the oven know how warm the air leaving the microwave section is. When the reading looks wrong, F4 E3 appears and the microwave may be blocked from running. Sometimes the display clears after a restart, but a returning code needs a proper look.

Common causes of F4 E3

  • Microwave exhaust air temperature sensor
  • Sensor connector and harness
  • Airflow around the microwave section
✓ One safe check you can try

1. Make sure nothing blocks the vents around the oven. 2. Turn the oven's breaker off, wait a minute, then turn it on. 3. Watch for F4 E3 on the display for the next minute. 4. If it is gone, try a short microwave cycle.

! Why to stop there
  • A clear display does not explain why the exhaust reading looked wrong.
  • We check the sensor and wiring, and we confirm the air path is open.
  • Built-in units need careful handling, so a written price comes first.
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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F4 E3F4 E3 questions
Why does exhaust air temperature matter?

The microwave section needs to move heat out safely. The sensor tells the control how warm the exhaust is, and a bad reading can make the oven block the microwave.

Can a blocked vent cause F4 E3?

The guidance name only the sensor and wiring. Still, clear vents are good practice, and we look at airflow during a visit in case it matters.

Should I use the microwave after a reset?

Only if the display stays clear. If F4 E3 comes back, we suggest waiting for our inspection rather than running the microwave repeatedly. We also confirm the vents are clear.

Book a visit

Still seeing F4 E3?

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

(713) 589-6107