Written by
Lena Hartwell Appliance Care EditorPublished October 27, 2026
VERIFIED
Error codeC-30
ApplianceWall Oven
Reading C-30
A PCB sensor that has gone open or shorted during use is what the display reports with this code. Dacor prints it for the DOB30M977 Modernist wall oven, the DOC30*977D* combi oven, and the Modernist Pro ranges DOP36M86D and DOP48M86D.
Owner steps
The manuals print none beside this code. They name the cause alone, so the sensible course is to jot the code down and book service.
Check these too
C-31: a PCB running too hot; the manuals say call for service.
C-23: shorted temp probe sensor, the one with a restart routine.
A Dacor oven in San Francisco or the Bay Area showing C-30 can be booked through Dacor wall oven repair, or by phoning (415) 687-5926. Keep the code and your model details close.
Model compatibility: Dacor reuses codes across series and model years, so C-30 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-30 means the PCB sensor is open or shorted while the oven is operating.
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.
You submit a request with your appliance model and symptom, we confirm an appointment window, and a technician performs an on-site diagnosis. You then receive a clear estimate and decide whether to proceed before any repair begins.
Yes. We provide an upfront estimate after diagnosis. No parts are ordered or installed until you approve the work, so there are no surprise charges.
Replacement parts are selected for the exact model and confirmed with you before ordering or installation.
Service areas are listed on the Locations page. Contact us with your ZIP code to confirm current coverage for your address.
Ready to get your Dacor appliance working again?
Book a repair online or call us — clear estimates and approval before any repair work begins.
