Oven F-codes vs C-codes is the fastest sorting question for a Dacor wall oven problem, because the two systems never share a single string, and the display format alone — dash or no dash, letter-prefixed or not — tells you immediately which table to open.
The Legacy F-code table
Legacy Classic ERC wall ovens — the ECS/ECD, PCS/PCD, and MCS/MCD families — display a bare F followed by a single digit, F0 through F8, documented directly in Dacor’s own Tec-Line troubleshooting sheet. F0 is a shorted or jammed input device. F1 is the ERC’s System Watchdog Circuit detecting a bake or broil failure. F2 is a heating-mode high-temperature runaway condition. F3 and F4 are shorted and open oven-temperature-sensor failures respectively. F5 and F6 both call for ERC board replacement, for a failed self-diagnostic and an EEPROM checksum error respectively. F7 and F8 both concern the door-lock circuit and its motor timing.
The Samsung-era C-code table
Samsung-era Modernist double wall ovens such as the DOB30M977DS display a dash-formatted code beginning with C, drawn from a documented “Information codes” section: C-d0 and C-d1 for stuck keys and door-lock mispositioning, C-F0 and C-F2 for communication failures between the Main and Sub PBA or the touch panel, C-20 and C-21 for oven-sensor and abnormal-temperature problems, C-23 for a shorted temperature probe, C-30 and C-31 for PCB sensor and overheat problems, C-70 and C-72 for cooling and drain-related conditions, and C-A2 for a cooling-fan failure.
Why the format alone tells you which table applies
A bare digit-only code (F1, F6) belongs to the Legacy Classic ERC system. A dash-formatted, letter-mixed code (C-F0, C-30) belongs to the Samsung-era Modernist system. There is no ambiguity in the format itself, which makes this the single fastest confirmation before reading any meaning into a code — check the punctuation before the digits.
What does not belong to either table
Two additional codes, E1 and E2, circulate on aggregator sites with vague descriptions like “communication failure” and “control board problem.” No primary Dacor document behind either string was found in this research, and they should be treated as unverified rather than genuine Dacor codes for either generation.
When to book service
A repeated F5 or F6 on a Legacy oven, or a persistent C-F0 or C-30 on a Samsung-era oven, points toward a board-level repair rather than a simple reset, and is worth an experienced technician’s attention. Our oven error codes page lists both tables in full, and our oven appliance page covers both generations by model. Schedule a visit with the exact code, formatted precisely as it displays, and see Dacor’s own site for current oven models.
