KitchenAid Over-the-Range Microwave Code F2H2: fan switch reading alert

What F2H2 means

KitchenAid over-the-range microwaves, including the KMHS120ESS, KMHC319ESS and KHMS155LSS, show F2H2 when there may be a problem with the vent fan and light switch on the lower left front side panel, or with its wiring. The control sees a switch state it does not expect. The fan or the light may stay on, stay off, or ignore your input.

Common causes of F2H2

Fan and light switch stuck or worn
Connector at the switch loose
Control misreading the switch state

✓ One safe check you can try

1. Operate the fan and light controls several times to check for a stuck switch. 2. Clean around them with a dry cloth. 3. Disconnect power for a minute by unplugging, then reconnect. 4. Observe whether F2H2 returns. If it does, call us.

! Why to stop there

Switch and control need to be tested together
The unit hangs above a range, which makes handling hazardous
We quote in writing before starting and offer a 30-day warranty

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

Probe or Insert ProbeKitchenAid Combination Microwave Message "Probe" or "Insert Probe": Seat the meat probe in its jack PUSH or PSHKitchenAid Built-In Microwave Message PUSH or PSH: The oven is waiting for Start Registration ErrorKitchenAid Over-the-Range Microwave Message "Registration Error": Check the home network and try again Sabbath, Sab, 5Ab, or 5A6KitchenAid Built-In Microwave Display Sabbath, Sab, 5Ab or 5A6: Sabbath Mode is on SEKitchenAid Over-the-Range Microwave Code SE: Keypad or user interface problem F4 E4KitchenAid Combination Microwave Code F4 E4: Humidity sensor signal missing from the cavity F7 E9KitchenAid Over-the-Range Microwave Code F7 E9: Is the upper vent door blocked? Flashing Time, Clock, 12:00, Power Loss or Enter TimeKitchenAid Built-In Microwave Messages Time, 12:00 and Power Loss: Set the clock after an outage

F2H2F2H2 questions

What if the fan runs all the time?

The control may be reading the switch as pressed. It is worth a prompt check because a fan running continuously wears the motor.

Can I live with F2H2?

If the microwave heats normally, yes for a short time, but a bad switch can fail further, so schedule a repair.

Do you replace the whole control panel?

Only if the test shows that is necessary. Often just the switch or its connection is replaced.