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Error code · Wall Oven

Monogram ZET Wall Oven Code F9: function error flashing on the display

Of all the error codes on Monogram 30-inch single and double convection wall ovens in the ZET1 and ZET2 series, such as the ZET1PL1SS and ZET2SL1SS, F9 is the only one ever displayed to the owner.…

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Code
F9
Appliance
Wall Oven
Brand
Monogram
Warranty
30-day workmanship

What F9 means

Of all the error codes on Monogram 30-inch single and double convection wall ovens in the ZET1 and ZET2 series, such as the ZET1PL1SS and ZET2SL1SS, F9 is the only one ever displayed to the owner. The manual describes it as a function error code, shown as F9 flashing. The documented cause is a cooling fan that stalls, or anything else that opens the thermal switch on the power vent assembly. You will see F9 on the display and the oven stops heating until the condition clears.

Common causes of F9

  • Cooling fan stalling or running slowly
  • Open thermal switch on the power vent assembly
  • Poor airflow to the control area
  • Relay board after the fan and switch check out
✓ One safe check you can try

1. Turn the Oven Mode and Temperature knobs to OFF. 2. Let the oven cool for one hour, then put it back in operation. 3. If F9 returns, disconnect all power for 30 seconds and reconnect. 4. If the function error code repeats, call for service.

! Why to stop there
  • The thermal switch opens for a reason, so we check the cooling fan, the switch and airflow before blaming a board.
  • We confirm the vent and cabinet opening are not restricting air to the control area.
  • We give a written price first, and our work carries a 30-day workmanship 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 Wall Oven codes

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F9F9 questions
Why does only F9 show on my display?

These ovens show F9 only, and other codes stay stored. F9 means the thermal switch opened, often from a stalled cooling fan.

What does the manual say to do?

Turn both knobs off, cool the oven one hour, then reuse it. If it repeats, remove power for 30 seconds and call if needed.

Will it need a new relay board?

Only if the fan, switch and airflow all check out. We test those first.

Book a visit

Still seeing F9?

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

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