Written by
Lena Hartwell Appliance Care EditorPublished October 27, 2026
VERIFIED
Error codeC-70
ApplianceWall Oven
What C-70 means
During use of the oven, the steam sensor has become open or shorted. C-70 is printed in the manuals for the DOC30*977D* combi oven, the Modernist DOB30M977 wall oven and the DOP36/48M86D Modernist Pro range, all current Dacor series.
Manual routine
Press OFF (some displays label it CANCEL), then switch the oven back on.
When C-70 returns, disconnect the oven from power for 30 seconds or more, then reconnect.
Call for service if the code is still showing.
Nearby codes
C-72 covers the drain system and sits in the same table; it is worth a look if the oven reports drainage trouble.
C-31 is about PCB temperature, not the steam sensor.
C-23 is a shorted temp probe sensor with the same restart steps.
Dacor oven repair in San Francisco
When C-70 survives the reset on a Dacor oven in San Francisco, start with Dacor wall oven repair and then phone (415) 687-5926. Mention your model, the code, and that you restarted the oven and cut its power.
Model compatibility: Dacor reuses codes across series and model years, so C-70 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-70 means the steam 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.
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Replacement parts are selected for the exact model and confirmed with you before ordering or installation.
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