Error code
Oven error code F4
Dacor oven error code F4: The mirror of F3: instead of too little resistance the control sees none at all, which means the circuit is broken somewhere between it and the probe. Which machines can raise it, what the maker publishes about it, and what to do next.
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What we can confirm
Code F4, from the manufacturer's own documentation
A code is only meaningful together with the machine showing it — the same digits mean different things on different equipment.
The code
F4
The mirror of F3: instead of too little resistance the control sees none at all, which means the circuit is broken somewhere between it and the probe. A disconnected plug at the back of the cavity is a genuine and cheap possibility, particularly on an appliance that has been pulled out for other work; so is a lead that has finally parted after years of heat. The sensor itself is the third candidate rather than the first.
or call (305) 363-6067
What it narrows down to
Open oven temperature sensor circuit.
Diagnostic
From $95, credited to the repair
On the same appliance
What else belongs to the wall ovens
On this make a code belongs to the appliance rather than to a product line. These are the other conditions this machine can display, and the models that can show this one — a display often has more than one thing to say, and the model number decides what any of it costs to put right.
Other codes this appliance can display
Shorted or jammed input device — a shorted wire or a failed membrane switch.
System watchdog circuit — the ERC's own self-diagnostic found a bake or broil system failure.
Heating mode high temperature — the control detected a runaway heat condition.
Shorted oven temperature sensor.
ERC self-diagnostic failure — the control has failed its own test.
EEPROM checksum error — the control's stored settings no longer verify.
Door lock enabled above temperature — the clean-lock or phase circuit is faulty.
Door locking switch — the motor ran for two minutes without the phase switch changing state.
A control key has been stuck or shorted for a minute.
The door lock is mispositioned.
Communication interrupted between the main board and the sub board.
Communication interrupted between the main board and the touch panel.
The same digits mean different things on different equipment. Search the full code list
In more detail
About Oven error code F4
What F4 means on this make
The mirror of F3: instead of too little resistance the control sees none at all, which means the circuit is broken somewhere between it and the probe. A disconnected plug at the back of the cavity is a genuine and cheap possibility, particularly on an appliance that has been pulled out for other work; so is a lead that has finally parted after years of heat. The sensor itself is the third candidate rather than the first.
Where this appears, and which table it belongs to
On the appliance's own display. Photograph it before you cut the power: a display that has been cleared has taken the evidence with it, and there is no way to ask the machine for it again. Then check the model, because this make changed hands in 2016 and the two generations share no code string. The same characters mean different things on a Classic ERC oven, an ER-series range and a Modernist induction cooktop, and a meaning read off the wrong table is worse than no meaning at all.
Which machines this one applies to
Classic ERC wall ovens and ranges. The same number on a different appliance of this make is a different page and often a different repair, which is why this archive is organized by appliance rather than by number. This maker documents codes on 5 of the appliance types this site publishes — coffee machine, cooktop, dishwasher, oven and range — and publishes none at all for freezer, microwave, range hood, refrigerator and wine cooler. Those appliances have symptom pages here and no code pages, which is the honest answer rather than borrowing a table from the machine next door.
What to do about it
- Say whether the oven has been moved or worked on recently — a disturbed plug is a common cause.
- The circuit is measured at the control end and again at the probe, which separates lead from part.
- A sensor that reads open cold is replaced; one that reads correctly points at the wiring.
- Where the harness has heat damage it is replaced with the sensor, not after it.
Where this goes next
The job this usually becomes is oven temperature sensor service, and that page carries a starting figure and the reasons that move it. If it turns out to be nothing — and on this make a real share of these are modes, reminders and settings rather than problems — the visit ends there and you pay the diagnostic and nothing else, or call (305) 363-6067 and describe what the panel is doing before booking anything.
This article is based on:
- Official manufacturer documentation
- Internal repair procedures
- Technician repair history
- Company quality standards