Dacor Wall Oven C-20 Error Code
Current Dacor ovens flash C-20 when the oven sensor is open or shorted during operation; the manuals add no owner step.
Model Reference
Dacor DOB30M977DM Double Wall Oven Repair
A 30-inch double oven that needs a careful look at the controls, sensors and door hardware of both cavities.
Dacor repairSan Francisco & the Bay Area
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Model number
DOB30M977DM
About this model
Model overview
The DOB30M977DM is a 30″ double wall oven. The focus here is how the oven behaves in your kitchen. General background on the family is in Dacor wall ovens.
How we approach a double oven that misbehaves
We begin with the symptom and work outward. First comes the power feed and the display, then each cavity in turn, then the door hardware. A sensor that reads wrongly can make an oven seem to heat badly even though the heating side is fine, so sensors are checked alongside elements. If a temperature code shows, we look up its meaning, for example U30 for an open probe or U31 for a shorted one, and then confirm at the oven.
Sensor, element, or control?
| What you notice | Where a technician looks |
|---|---|
| Cavity never warms | Heating elements, relays, power to the cavity |
| Temperature seems wrong | Probe readings and the control that interprets them |
| Keypad ignores presses | Touch panel and wiring to the control |
| Door will not release | Latch switch and lock motor |
Placement and access
A stacked pair sits inside a tall cabinet. In Bay Area houses with hillside entries and steep stairs, deliveries and moves take extra planning, so tell us about stairs, narrow doors or a shared building entrance when you book. Nearby cabinetry should be cleared so the oven can be eased out without contact.
Further reading on this topic is in oven temperature problems and the oven error code overview.
Request a visit
Choose Dacor wall oven repair and include the DOB30M977DM label, which is usually seen on the oven frame. Diagnosis comes first, the estimate is written, and nothing proceeds without your approval.
Preparing for the technician
Clear the counter beside the oven so racks and trim have somewhere to go. Take a photo of the display if it shows a message, and jot down which cavity you last used. If a household member noticed the fault first, ask what they saw, since a casual remark such as a click or a smell can narrow the search a great deal.
Keep pets and children away from the open cutout during the visit.
Frequently asked questions
It is a double wall oven in a 30-inch size. We do not state anything else about its features.
Yes, and the estimate shows each cavity separately so you can approve them independently.
Check the breaker, write down any code, and note which cavity is affected.
Check the label for the series.
Yes. Door switches, latches and gaskets are part of a full diagnosis when the symptom points there.
Model-information disclaimer. Confirm your exact model number and specifications with your appliance documentation before booking a repair. Model pages are for identification and compatibility reference.
Diagnostics
Error codes for this appliance
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Repair service
Wall Oven Repair in San Francisco
Dacor single, double and combination wall oven repair in San Francisco and the Bay Area, covering heat, door locks, cooling fans, display…
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Tell us what’s wrong — we’ll take it from there
Share a few details and we’ll confirm an appointment. Prefer to talk? Call us and we’ll help right away.
Phone
(415) 687-5926
Hours
Mon–Sat: 8:00 AM – 7:00 PM
Service area
San Francisco Bay Area, California