Written by
Elena Navarro Appliance Repair Content SpecialistPublished September 11, 2026Updated October 20, 2026
Error codeC34
ApplianceWall Oven
Quick answer
C34 on an older Dacor Renaissance wall oven means the relay board ambient temperature probe is open.
Model compatibility: Dacor reuses codes across series and model years, so C34 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
C34 means the relay board ambient temperature probe is open (open thermistor).
An open thermistor on the relay board’s ambient temperature probe produces C34. It is the relay board twin of the control board code C24.
Series
Look to the older Renaissance wall ovens EORS/EORD (Epicure) and MORS/MORD (Millennia) 127/130/227/230.
Owner guidance
The service guide lists the fault and stops there. Probe checks are for a technician.
Codes to look at next
C35 reports the shorted version of the same probe, and C33 is the relay board over-temperature code. On the control board the open probe is C24.
Dacor oven repair in Los Angeles
With C34 showing, Los Angeles customers can dial (310) 742-1907. Browse oven repair too, and bring the model number to the call.
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?
Book a specialist visit for a clear estimate and approval before any repair.
