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Error Code

Dacor Wall Oven C23 Code: Control Board Over Temperature

Book Repair (844) 410-4158
Jordan Avery Written by Jordan Avery Appliance Repair Content Specialist Published October 20, 2026

Content status: Verified

Error code C23
Appliance Wall Oven
Quick answer

Dacor code C23 reports control board ambient temperature above 80°C on legacy Renaissance wall ovens, with a shutdown until it falls to 50°C.

Model compatibility: Bosch reuses codes across series and model years, so C23 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.

Plain language

What this code means

C23 reports control board ambient temperature above 80°C.

What C23 does

  • Trigger: ambient temperature at the control board above 80°C
  • Response: the oven shuts down and the cooling fans stay on
  • Reset point: ambient temperature back down to 50°C
  • Series: legacy Renaissance EORS/EORD and MORS/MORD ovens, 127/130/227/230

Codes to compare

  • C33: the same over-temperature fault measured at the relay board.
  • C-21: abnormally high internal temperature, a code from the Modernist manuals.
  • C24: control board ambient probe open.

Repair for Dacor ovens in your metro area

Customers in the Miami, New York, Houston, Los Angeles and San Diego metro areas can use Dacor oven repair or call (844) 410-4158. Give us C23 and the model number.

Source: Dacor Renaissance Wall Oven Service Guide, Section 5 Wall Oven Error Codes

Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.

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Book Repair (844) 410-4158

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