JennAir Combination Wall Oven Code F4 E5: weight sensor in the microwave

What F4 E5 means

On JennAir combination wall ovens with a built-in microwave, F4 E5 means there may be a problem with the microwave weight sensor or its wiring. That sensor helps the microwave estimate how much food is inside. The display shows F4 E5, and weight-based microwave programs may not work properly. Automatic programs that depend on weight, like defrost by weight, will not run properly. Timed cooking might still work.

Common causes of F4 E5

Microwave weight sensor out of range
Damaged or loose wiring to the sensor
Turntable or tray not seated where the sensor expects it

✓ One safe check you can try

1. Press Cancel and remove everything from the microwave. 2. Check that the tray or turntable sits correctly. 3. Power the oven down at the panel for sixty seconds, because that reboots the weight sensor test. 4. Restore power and try a basic timed run. 5. Still seeing F4 E5? Stop here and call for service on the weight sensor.

! Why to stop there

A weight sensor is delicate, and pressing on it can bend it.
Wiring to the sensor is hidden inside the microwave section.
Only a test can tell the sensor from a seating problem.

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 Wall Oven codes

FC E8JennAir Wall Oven Code FC E8: Registration error FC E9JennAir Wall Oven Code FC E9: Wi-Fi power module wiring Feature Not AvailableJennAir Wall Oven Message "Feature Not Available": Follow the Prompt on the Display Flashing Time, Clock, 12:00, Power Loss or Enter TimeJennAir Wall Oven Display Flashing Time or 12:00: Set the clock after power loss Locked, Lock or LocJennAir Wall Oven Display Locked, Lock or Loc: Controls and door are locked Press Cancel to ResetJennAir Wall Oven Message "Press Cancel to Reset": Clear and power cycle Probe or Insert ProbeJennAir Wall Oven Display Probe or Insert Probe: Meat probe needed PUSH or PSHJennAir Wall Oven Display PUSH or PSH: Press start

F4 E5F4 E5 questions

Why does my microwave need a weight sensor?

Some automatic programs use weight to estimate cooking time. If the sensor circuit fails, those programs cannot work and the code appears. The sensor estimates how much food is inside, which sets cooking time for automatic programs.

Can I still cook with F4 E5?

Manual timed cooking may still work. Because the oven has reported an error, we recommend a technician check before relying on it. Basic timed cooking is a fair workaround until a technician checks the weight sensor.

What does the repair involve?

We test the sensor and its wiring, quote in writing and replace what has failed. The repair carries a 30-day workmanship warranty. The quote itemizes parts and labor, and nothing starts until you approve it.