Written by
Lena Hartwell Appliance Care EditorPublished October 27, 2026
VERIFIED
Error codeC-31
ApplianceWall Oven
Meaning
When the control reports C-31, the PCB temperature has risen abnormally high. The code sits in the information-code table of three Dacor manuals: the DOB30M977 Modernist wall oven, the DOC30*977D* combi oven and the DOP36/48M86D Modernist Pro range. All three are current Dacor lines.
The manuals’ instruction
The single instruction beside C-31 is call for service.
Unlike C-70 or C-23, it has no restart or reset routine in print, so a reset attempt is not part of the advice.
Checking the PCB side of the oven is left to a technician.
Easily confused with C-31
C-30: the PCB sensor is open or shorted, rather than hot.
C-21: abnormally high internal temperature, a different reading from a hot PCB.
C-A2: cooling motor behaving abnormally, listed in the same table.
Service for a Dacor wall oven in San Francisco
If C-31 appears on your Dacor oven in San Francisco, visit Dacor wall oven repair and call (415) 687-5926. Have the code, the model number and what you tried when you call.
Model compatibility: Dacor reuses codes across series and model years, so C-31 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
C-31 means the PCB temperature is abnormally high.
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.
Seeing this code on your Dacor appliance?
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