Dacor has used several generations of oven controls, each with its own code list, from F0 to F8 on Classic models to C-d1 on the newer Pro Ranges. The meanings below come from Dacor’s Technical Diagnostic Quick Reference (version 15) and its Pro Range service manual, grouped by series. Note the model number with the code: F2 is runaway heat on a Classic oven but a communication fault on a Discovery range.
Which Dacor family do you have?
| Series | Model numbers | Codes look like |
|---|---|---|
| Classic wall ovens and ranges | Ovens CPS/CPD, CPTS/CPTD, ECPS/ECPD, ECS/ECD, PCS/PCD, MCS/MCD; ranges ERD, ERSD, ERDE, PGR, RSE, RSG, RSD, MRE, EGR, ERG | F0 to F8 |
| Discovery wall ovens | EO, PO, MOV, MOH, single and double | U20, L50, C72 |
| Discovery dual-fuel ranges | ER30D, ER30DSR, ER36D, ER48D | F1 to F9, then F10 to F95 |
| Renaissance, Distinctive, Heritage | Ovens RO, RNO, RNWO, EORS, EORD, MORS, MORD, DO, DTO, HWO; ranges RR30N, DR30, HDER, HDPR, HIPR | C01 to C77, U20 to U80 |
| Pro Range | DOP36M94DL, DOP48M96DL | C-20, C-d1, C-F0 |
Reading the codes
On the U-code families, U names the upper, single or left oven, L the lower or right one, and C a control-side fault. Classic, Renaissance, Distinctive and Heritage controls show the code when the fault happens. Discovery wall ovens store their last 20 codes behind a Dacor servicer ID, and Discovery ranges keep theirs in a diagnostic test that also fires the elements and door latch. Leave service modes to the technician; Dacor’s own test sheets warn against running the latch in them. The exception is a 48-inch Pro Range: touch UPPER and LOWER together for five seconds, touch Error_Disp to see the latest five codes, then touch UPPER and LOWER for five seconds to return. Photograph the list and touch nothing else there.
Classic wall ovens and ranges: F0 to F8
| Code | Meaning |
|---|---|
| F0 | A shorted or jammed input: wiring or the membrane keypad |
| F1 | Watchdog: a bake or broil system fault anywhere from the control to the elements |
| F2 | Runaway heat; the control beeps until you press Cancel. A stuck relay is checked first, then the sensor and wiring |
| F3, F4 | Oven sensor shorted or open, checked only during cooking. With F4, bake will not start and the controls seem dead |
| F5, F6 | The control failed its self-check or memory checksum; with F6 only the clock and timer work |
| F7 | A clean lock and phase circuit fault: door lock switches or door adjustment |
| F8 | The lock motor ran two minutes without the phase switch moving, usually as self-clean starts |
Discovery wall ovens: U, L and C codes
| Codes | Points to |
|---|---|
| U20, U21 | Over temperature: above 610°F for two minutes while cooking, or 890°F in self-clean |
| U22 to U25 | A sensor out of calibration, heat around the relay board, or its ambient probe open or shorted |
| U30 to U35 | Oven temperature sensors open or shorted, or their wiring |
| U40 to U43 | Relay board or its harness |
| U50 to U55 | Door latch: lock or phase switch, door switch, latch motor or relay board |
| U60, U61 | Cooling fan slow or fast, or blocked airflow |
| U70, C72 to C75 | Board communication, a software or board ID mismatch, the logic board or controller |
| C76 to C78 | Configuration (Dacor replaces the glass and touchpad) or display voltage under 15 volts |
| U80 | Meat probe or its wires |
| C90 | Power loss: clear the code and retest the cooking modes |
Discovery dual-fuel ranges: F1 to F95
A general code comes first (F1 internal, F2 control panel to relay board communication, F3 external, F9 door), usually followed by a specific one. F10 is a clean or cook runaway: an intermittent sensor, loose sensor wiring or a shorted element relay. F11 is a shorted key, F32 a key loop fault in the membrane or data cable. F13 to F15 point to the power board, F20 to the data cable or control panel board. F30 and F31 are the sensor shorted or open. F90 is a door unlock timeout (latch cables or assembly), F95 the power board’s door lock protect circuit.
Renaissance, Distinctive and Heritage: one shared list
U20 and U21 are cook and clean over-temperature, 610°F and 890°F; U30 and U31 an open or shorted sensor; U50, U51 and U55 the latch lock switch, phase switch and motor; U80 a shorted meat probe. C01 is a key not released for two minutes. C23 and C33 mean the control or relay board area overheated: the oven shuts down and runs its cooling fans until it cools to 122°F. Dacor’s listed cause is open-door broiling, so broil with the door shut. C24, C25, C34 and C35 are those boards’ thermistors, C41, C42 and C44 controller checks, C76 a single or double oven mismatch, and C77 a lost keypad connection.
Pro Range: C-codes and the gas burners
The manual lists its codes under the 48-inch model’s 30-inch oven and 18-inch steam oven. C-20 is the oven sensor open or shorted, C-21 overheating, C-23 a shorted meat probe, C-30 and C-31 the board’s temperature sensor or an overheated board, C-70 the steam sensor, and C-72 water left after the maximum drain time. C-d1 is a door locking error, C-d0 the keypad or touch control, and C-F0 and C-F2 lost communication between control boards. The manual is a Samsung document, and the codes read like those in our Samsung oven codes guide.
The gas burners have no codes, only symptoms. Soft blue flames are normal on natural gas, soft blue with yellow tips on LP. Mostly yellow flames point to the orifices, the regulator or blocked air at the burner head. If one burner will not light, check that its head and cap are seated and its ports are dry, especially after washing. If none light, turn the knobs off, then check the breaker and that the range’s gas supply valve is open.
The codes that mean stop and call
Over-temperature: F2 (Classic), F10 (Discovery range), U20, U21, L20 or L21, and C-21 (Pro Range). Stop using the oven; if it heats after you turn it off, switch it off at the breaker and call. Self-clean faults: the Pro Range manual says an F code or three long beeps during self-clean mean a malfunction: turn it off or disconnect electricity and gas, and have it serviced. Door lock codes (F7, F8, F90, F95, U50 to U55, C-d1): never force the door. If a Pro Range door stays locked after a power failure or tripped breaker, Dacor’s checklist is to turn the control lockout on, then unlock the control. Gas smell: do not light anything, touch electrical switches or use a phone inside. Get everyone out and call the gas supplier from outside.
Why we don’t guess parts on a Dacor
Record the code, and for a control or communication code switch the oven off at the breaker for five minutes, then back on. If it returns, book service; never keep resetting over-temperature or door lock codes. Guessing is costly: an open sensor (F4) can make a Classic control look dead. On the Renaissance and Distinctive list, unplugging a board connector with the power on sets C43, which Dacor calls not reversible: the controller must be replaced. A Discovery double oven needs matching software on both relay boards, and C73 sends the technician to check exactly that. We read the codes, test live, quote the actual repair, and the diagnostic fee is credited toward it.
Dacor oven repair across the Denver Metro
FiXiFY repairs Dacor wall ovens and ranges across Denver, Aurora, Lakewood, Westminster and the metro with genuine OEM parts. See built-in oven repair, range repair, the Dacor page or our Wolf oven codes guide. If it simply will not heat, see oven not heating.
BOOK ONLINECALL (303) 214-1240
FAQ
What does F2 mean on a Dacor oven?
On a Classic Dacor wall oven or range, F2 is the runaway heat alarm: the oven got hotter than its limits, and the control keeps beeping until Cancel is pressed. If it comes back, a technician checks for a stuck relay first, then the oven sensor and its wiring. On a Discovery dual-fuel range, F2 means something else: a general communication fault between the control panel and the relay board.
What does C23 mean on a Dacor oven?
On Renaissance, Distinctive and Heritage models, C23 means the area around the control board got too hot, so the oven shuts itself down and keeps the cooling fans running until that area is back down to 122 degrees F. Dacor names broiling with the door open as a possible cause, so broil with the door closed. If C23 returns with the door shut, book service.
Why is my Dacor oven door locked with an error code?
Door lock faults show up as F7 or F8 on Classic models, U50-series codes on Discovery, Renaissance, Distinctive and Heritage ovens, F90 or F95 on Discovery ranges and C-d1 on the 48-inch Pro Range. Do not force the door. If a Pro Range stayed locked after a power failure or a tripped breaker, Dacor’s checklist says to turn the control lockout on and then unlock the control; if it still will not open, book service.
How do I see the stored error codes on a Dacor Pro Range?
On the 48-inch Pro Range, touch UPPER and LOWER together for five seconds to open the information screen, then touch Error_Disp to show the five most recent check codes. Touch UPPER and LOWER for five seconds again to get back to the normal display. Write the codes down and leave the other service items on that screen alone.
FiXiFY Appliance Repair — 7030 E 46th Ave Dr, Unit A, Denver, CO 80216 · (303) 214-1240 · support@fixifycolorado.com