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Error code · Wall Oven

Monogram ZET Wall Oven Code C3: no reply from the upper mode encoder

On Monogram 30-inch single and double convection wall ovens in the ZET1 and ZET2 series, such as the ZET1PL1SS and ZET2SL1SS, C3 is a stored communication code for the upper mode encoder, the board that reads…

Medium · inspection needed
Code
C3
Appliance
Wall Oven
Brand
Monogram
Warranty
30-day workmanship

What C3 means

On Monogram 30-inch single and double convection wall ovens in the ZET1 and ZET2 series, such as the ZET1PL1SS and ZET2SL1SS, C3 is a stored communication code for the upper mode encoder, the board that reads which cooking mode you picked on the upper oven. When the control cannot hear it, the mode selection may not register. You may find the oven ignoring the mode setting, choosing a different mode than you turned to, or failing to start. The display does not show C3.

Common causes of C3

  • Upper mode encoder board
  • Harness to the encoder
  • Mode setting not read by the control
  • Control board communication
✓ One safe check you can try

1. Leave the oven off until it has cooled. 2. Turn the mode setting to a basic bake. 3. Check that the oven responds with the right heat. 4. If the mode does not match, call us and tell us which mode you chose and how the oven acted.

! Why to stop there
  • We confirm which mode the oven actually runs against the one you selected.
  • The harness is checked before we replace the encoder board.
  • Our price is written before any work, and the repair is under 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.
C3C3 questions
What is a mode encoder?

It is the board that reads which cooking mode you selected. C3 means the control lost contact with the upper one.

Why would the oven ignore my mode?

If the control cannot hear the encoder, the setting may not register.

Does C3 appear on the screen?

No. It is stored, and we read it during service.

Book a visit

Still seeing C3?

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

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