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Error code · Microwave

Maytag Microwave Code F9: Two Boards to Check

F9 on a Maytag over-the-range microwave means the oven could not carry out its function. The manufacturer names two places to look, the appliance control board and the relay control board, plus the wiring between them.…

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Code
F9
Appliance
Microwave
Brand
Maytag
Warranty
30-day workmanship

What F9 means

F9 on a Maytag over-the-range microwave means the oven could not carry out its function. The manufacturer names two places to look, the appliance control board and the relay control board, plus the wiring between them. One handles decisions, the other switches the heating and fan loads. You will see F9 in the display and the microwave may stay idle.

Common causes of F9

  • The appliance control board
  • The relay control board that switches the loads
  • The wiring between the two boards
  • Control behavior after a power dip
✓ One safe check you can try

1. Switch the microwave's circuit breaker off and keep it off for one minute. 2. Turn it back on. 3. Wait for a minute and confirm F9 does not reappear. 4. Verify oven operation with a short cycle and a cup of water.

! Why to stop there
  • Two boards share the blame in the manufacturer's list, so the reset cannot point to one
  • We test outputs and connections to find which board or wire is responsible
  • The price comes in writing first, and our work carries 30 days of 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.
→Same appliance

Other Microwave codes

F8E5Maytag Microwave Code F8E5: Sensor in the Exhaust Air Path F9Q or F9Q1Maytag Microwave Code F9Q or F9Q1: Reset and Function Failure FC E1, FC E2 or FC E3Maytag Microwave Code FC E1, FC E2 or FC E3: Wi-Fi Connection Lost FC E7Maytag Microwave Code FC E7: Microwave Cannot Reach the Router FC E8 or Registration ErrorMaytag Microwave Code FC E8 or Registration Error: Setup Entry Problem Flashing 0:00Maytag Countertop Microwave Code Flashing 0:00: Clock Reset After Power Loss Flashing Colon or PFMaytag Microwave Code Flashing Colon or PF: Power Loss Notice LOC, L or Padlock IconMaytag Microwave Code LOC, L or Padlock Icon: Control Lock On
F9F9 questions
Why does F9 name two boards?

The control board decides what the microwave should do, and the relay board carries it out. A problem in either, or in the wiring that links them, can produce the same F9.

Will resetting the breaker harm anything?

No. A short breaker reset is exactly what the manufacturer lists as the first step. Wait the full minute so the control restarts cleanly.

Can an older Maytag with F9 be repaired?

In many cases yes. We quote the repair in writing and tell you plainly when the age of the microwave makes replacement the better use of your money.

Book a visit

Still seeing F9?

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

(713) 936-6390