Written by
Jordan Avery Appliance Repair Content SpecialistPublished October 20, 2026
Content status:
Verified
Error codeC23
ApplianceWall 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.
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.
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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