Dacor · Wall ovens
Dacor Wall Oven Error Codes
A Dacor wall oven names a fault with a letter and a number. On Renaissance, Distinctive and Discovery ovens, C points at the controls, U at the upper or only oven and L at the lower one; older Classic ovens use F and a single digit. The code narrows the search to one circuit, and a meter finds the part.
$79 service call, applied to the repair. Monday to Saturday, 8 AM to 7 PM.
In short: write the code down before you press anything. On the glass-touch ovens, U50, U51 and U55 are the door latch, U30 and U31 the oven sensor, U20 and U21 overheating, and C23 or C33 hot electronics, most often from broiling with the door open. A code that returns after one breaker restart needs a technician.
Which Dacor oven you have
Each Dacor control family has its own code list. A phone photo of the data tag tells us which list and which parts apply.
| Model starts with | Family | How it reports a fault |
|---|---|---|
| RO, ROV | Renaissance, glass touch keys and a number pad | C, U and L codes that stay on the display |
| EORS, EORD, MORS, MORD | Earlier Renaissance ovens | The same list |
| DO, DTO, DTOV, RNO, RNOV | Distinctive ovens and the RNO models listed with them | The same list |
| EO, PO, MOV, MOH | Discovery, a menu screen with soft keys | A longer U, L and C list; the last 20 are stored |
| ECS, ECD, PCS, PCD, MCS, MCD, CPS, CPD | Classic, clock-style readout and arrow pads | F0 to F8 with a beep |
In the newer numbers a 1 after the letters means a single, a 2 a double, and the last two digits the width: RO130 is a 30-inch single. Renaissance and Distinctive 30-inch ranges share the Renaissance list; ER dual fuel ranges have their own, on Dacor range repair. Ovens designed after Samsung bought Dacor in 2016 are not covered here.
The serial dates the oven: V for wall oven, a revision letter, then the year and week built. V-C-05 at the start is a 2005 oven at revision C, and the revision decides which version of a part fits.
How each family shows a fault
Renaissance and Distinctive: C codes belong to the control board, the relay board on top of the oven and the touch keys; U codes to the upper or only oven, L codes to the lower oven of a double. A single can raise about 20 different codes, a double about 26.
Discovery: the code appears on the menu screen, and the controller keeps the 20 most recent, newest first, for a technician to read and clear.
Classic: F and a digit, with beeping until you press CANCEL. F3 and F4 are only checked while the oven tries to cook.
After a repair the stored code is cleared and the new part run once, or the oven may keep reporting a fault already fixed. We do not publish the service key sequences.
What looks like a fault but is a setting
| What you see | What it is | What to do |
|---|---|---|
| Broil modes refuse to start | The meat probe is plugged in | Unplug the probe. |
| Self-clean or Sabbath will not start | Probe in, a delay set, or the other oven of a double in use | Remove the probe, cancel the delay, turn the other oven off. |
| Oven off after twelve hours | The 12-hour shutoff, on from the factory | Normal, and it can be disabled. |
| Door locked after a clean | The latch holds until the cavity cools; a Classic lets go below about 390°F | Wait. Never pull on the handle. |
| Clean Convection Fan Filter on a Discovery | A reminder after about 15 hours of convection use | Wash and dry the filter, then press RESET for that oven. |
Renaissance and Distinctive codes
A code names a circuit, not a part, and meanings vary by model and era.
Controls, boards and keys
| Code | What it means | What you can do |
|---|---|---|
| C01 | A key read as pressed for about two minutes | Wipe the glass clean and dry. Call if it returns. |
| C23 | The control board got too hot, so the oven shut itself down and the cooling fan keeps running until the electronics cool | Usually broiling with the door open. Let it cool; call if it happens with the door shut. |
| C33 | The same overheating, measured at the relay board | As for C23. |
| C24, C25 / C34, C35 | The temperature sensor on the control board (24, 25) or relay board (34, 35) reads open or shorted | A board fault. Call. |
| C41, C42, C44 | The controller failed a check on its sensor readings (41), stored data (42) or program (44) | Controller, once the sensors test good. |
| C43 | Harness pins not making contact at the control or relay board; unplugging with power on also sets it, and it never clears | The controller is replaced. Oven wiring is technician work, done only with the breaker off. |
| C76 | Controller set up for the wrong oven, such as a double-oven board in a single | Seen after a board swap; clears with the correct board. |
| C77 | The controller cannot find the touch keypad | Call; the touch panel connection comes first. |
Upper (U) and lower (L) oven
| Code | What it means | What you can do |
|---|---|---|
| U20 / L20 | Cavity above about 610°F while cooking | Turn it off; breaker off if it keeps heating. Call. |
| U21 / L21 | Cavity above about 890°F during self-clean | Leave the door shut, let it cool, call. |
| U30, U31 / L30, L31 | Oven sensor reads open (30) or shorted (31) | The oven cannot regulate heat. Call. |
| U41 / L41 | LED display module failed | Display module replacement. |
| U50 / L50 | The latch ran to lock, but the lock switch never closed | Do not force the door. Call. |
| U51 / L51 | The switch that follows the latch position was never seen while locking | Call; the latch or its wiring. |
| U55 / L55 | The latch motor did not run | Call; the latch assembly or its power. |
| U80 | Meat probe reads shorted; a Renaissance double has a probe socket in the upper oven only | Unplug it and check the cable; call if it stays. |
Discovery codes
Discovery ovens (EO, PO, MOV, MOH) use a longer list, and some numbers differ: U41 is the display on a Renaissance but the relay board on a Discovery, and C76 is a wrong-oven board setup on a Renaissance but a touch panel fault on a Discovery.
| Code | What it means | What you can do |
|---|---|---|
| U20, U21 / L20, L21 | Over about 610°F for two minutes while cooking, or about 890°F in a clean | Off, breaker off if it keeps heating. Call. |
| U22 to U25 / L22 to L25 | A sensor out of calibration (22), too hot around the relay board (23), or the relay board's sensor open (24) or shorted (25) | For U23, broil with the door shut and keep vents clear; call if it repeats. U22, U24 and U25 are sensor faults: call. |
| U30 to U35 / L30 to L35 | The oven temperature sensor or its wiring reads open or shorted | Call. Wiring is checked before the sensor. |
| U40 to U43 / L40 to L43 | Relay board fault, or a poor harness or relay connection | Call. Connections before the board. |
| U50 to U55 / L50 to L55 | The door latch, its switches or the board that drives it did not report as expected | Do not force the door. Call. |
| U60, U61 / L60, L61 | Cooling fan too slow on low (60) or high (61) speed, or its air path blocked | Keep vents clear; no self-clean until checked. |
| U70 / L70, C72 to C75 | Lost contact with a power board (70), boards not talking (72), mismatched software or board IDs (73), logic board (74) or controller (75) failed | One breaker restart. Call if it returns. |
| C76 to C78 | Touch panel configuration fault (76, 77) or low display supply (78) | Call; 76 and 77 mean a new touch panel. |
| U80 / L80 | Meat probe or its wiring faulty | Remove the probe and retry. |
| C90 | The oven lost power | Expected after an outage. Run each mode; if all heat, it most likely did no damage. Call if it returns. |
Classic F codes
Classic ovens, and Classic ranges on the same control, use broader codes, so testing matters more.
| Code | What it means | What you can do |
|---|---|---|
| F0 | A key or input reads as stuck or shorted | Usually the touch pad membrane or a pinched wire. Call. |
| F1 | The control's self-check found a fault in the bake or broil circuit | Control, relay board, touch pad, elements or wiring; testing narrows it. |
| F2 | Runaway heat past the control's limit | Off, breaker off if it keeps heating. A stuck relay is checked first. |
| F3 | Oven sensor shorted, detected only while cooking | Call. |
| F4 | Oven sensor open; bake modes will not start, so the keys can look dead | Call. It looks like the control but is usually the sensor or its wire. |
| F5, F6 | The control failed its own self-test (F5) or memory check (F6), and usually only the clock and timer still work | Control replacement. |
| F7 | The door lock circuit is reporting a position that does not make sense | Lock switches or door adjustment. Call. |
| F8 | The lock motor ran but the latch never reached position, most often as a clean starts | Latch switches and wiring. Call. |
A Classic that will not heat while its readout sits at about 135 usually has a tripped high-temperature limit, and something tripped it.
What the common codes turn out to be
U50, U51, U55, F7, F8: the latch assembly
What it usually is: the motorized latch with its lock and position switches. A tired motor or a switch that no longer closes cleanly sets these codes; on a Classic, a door out of adjustment can too.
What you can check: after a clean, give the oven an hour or more to cool. Never pry the hook.
What we do: test the motor and each switch, then replace the latch assembly, usually without taking the oven out of the wall.
U30, U31, F3, F4: the oven sensor
What it usually is: the sensor rod or its plug, often after the heat of a self-clean.
What you can check: nothing inside; note whether it happened during a clean or a bake.
What we do: measure it cold and hot, check the wiring, and on a Renaissance replace it through the front of the cavity.
C23, C33, U23 and a tripped limit: heat at the electronics
What it usually is: a cooling fan pulls room air past the electronics to keep them cool, and broiling with the door open sends oven heat along that path instead, across the boards and the safety limit. A slow fan or a dented back panel can do the same with the door shut.
What you can check: broil with the door closed, as Dacor's instructions call for, and keep towels off the door.
What we do: test the cooling fan (at both speeds on a Discovery) and the air path. A tripped high-temperature limit on a Renaissance has to be reset by a technician, and we reset it only after finding what tripped it.
Stay safe. The boards are live at 240 volts whenever the breaker is on. If an element glows with the oven off, or the heat keeps rising after U20, U21 or F2, switch off the breaker. Never force a locked door, reset the limit or pull the oven out yourself.
What a Dacor oven repair costs
Every visit starts with the $79 service call, which pays for the trip and the diagnosis, including reading the stored codes, and is credited to the repair when you approve the written price. That price does not change once work starts. Typical ranges for wall oven repair:
Wall oven and steam oven repair
| Repair | Typical price, parts and labor |
|---|---|
| Oven temperature probe | $250 to $450 |
| Bake or broil element | $350 to $700 |
| Convection fan motor or element | $400 to $750 |
| Door lock motor or switch | $350 to $650 |
| Door hinge or glass | $350 to $750 |
| Steam oven descale and water-system service | $300 to $600 |
| Steam generator or pump | $600 to $1,200 |
| Electronic control board | $700 to $1,600 |
Typical Orange County ranges for parts and labor. The $79 service call is applied to any of them. Parts that ship from the manufacturer and older or discontinued models can run higher. You get the exact written price after the diagnosis and before any work starts.
Sensors and latches sit toward the low end, boards toward the top. More on Dacor wall oven repair, pricing, other brands' error code guides, Dacor refrigerators and all Dacor repair.
Talk to the technician first
Monday to Saturday, 8 AM to 7 PM. The $79 service call is applied to the repair.
Dacor oven error codes: questions
What does U50 mean on a Dacor oven?
The latch motor tried to lock the door but the lock switch never closed: usually the latch assembly or its wiring. L50 is the lower oven.
What does C43 mean on a Dacor wall oven?
A harness plug at the control or relay board lost contact, often because it was unplugged with the power on. The code cannot be cleared, so the controller is replaced once the wiring is right.
My older Dacor shows F4 and the keys seem dead. Is the control broken?
Usually not. An open sensor sets F4 and blocks the bake modes, so the keypad looks dead. The sensor and its wire are tested first.
Does U41 mean the same thing on every Dacor oven?
No. On Renaissance and Distinctive ovens it is the display module, on a Discovery the relay board, which is why we ask for the model first.
Can I clear a Dacor error code at the breaker?
One restart with the breaker off for five minutes clears a frozen control. If the code returns, a part has failed.
My Discovery oven showed C90 after a power outage. Is it damaged?
Probably not. C90 records the loss of power. Run each mode briefly; if everything heats, the outage most likely did no damage.
Are you a Dacor service center?
No. We are an independent service, not affiliated with Dacor or Samsung. We repair Classic, Discovery, Renaissance and Distinctive ovens and order Dacor parts through distributors, usually in a few business days.