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Error code reference

Dacor Range Error Code F2

Heating Mode High Temperature alarm

Dacor codesDacor range codes

Heating Mode High Temperature alarm - activated when the ERC senses a runaway heat condition or when the temperature exceeds runaway limits.

First step from the service manual

Check for a stuck relay first, then check the oven sensor and wiring; if alarm goes away, verify the oven will complete a clean cycle without failure.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What F2 means on a Dacor range

The F2 error code on a Dacor range signals a Heating Mode High Temperature alarm. This code is triggered when the Electronic Range Control (ERC) detects a runaway heat condition inside the oven cavity, meaning the oven temperature has exceeded the defined runaway limits without proper regulation. The ERC continuously monitors temperature data from the oven sensor and compares it against expected values. When temperatures climb beyond safe operating thresholds and the control cannot bring them back into range, F2 is generated as a protective response to prevent damage to the appliance and potential safety hazards.

The most common hardware cause of this condition is a stuck relay on the ERC board. Relay contacts that have fused or welded together will allow voltage to continue flowing to the bake or broil element even after the control has signaled them to open. This produces uncontrolled heating that the ERC flags as runaway. Beyond the relay, a faulty oven temperature sensor or degraded sensor wiring can send inaccurate resistance readings to the ERC, causing the control to misinterpret actual oven temperature and falsely trigger the alarm.

Diagnosis should begin by inspecting the ERC relay board for signs of a stuck relay. If the relay is confirmed functional, the oven temperature sensor and its associated wiring harness should be checked for proper resistance values and continuity. After repairs are made and the alarm clears, the oven should be run through a complete self-clean cycle to confirm that temperature regulation holds across the full high-heat range without triggering F2 again.

Source: manufacturer service documentation.

Common causes of F2

  1. 01

    Stuck relay on the ERC board

    Part replacement

    Relay contacts on the Electronic Range Control board can fuse together, keeping power flowing to the heating element even after the control tries to shut it off. This produces uncontrolled temperature rise that directly triggers the F2 runaway alarm.

  2. 02

    Faulty oven temperature sensor

    Part replacement

    A defective oven sensor sends incorrect resistance readings to the ERC, causing the control to misread actual cavity temperature. If the sensor reports values outside the expected range, the ERC may interpret normal or elevated temperatures as a runaway condition.

  3. 03

    Damaged or shorted sensor wiring

    Wiring / connection

    Wiring between the oven temperature sensor and the ERC can become pinched, burned, or corroded, leading to inaccurate signals reaching the control board. Inspect the harness for visible damage, bare conductors, or loose connector pins.

  4. 04

    Failed ERC control board

    Part replacement

    If the relay and sensor both check out correctly, the ERC itself may have internal component failure beyond just the relay, causing it to incorrectly trigger the high temperature alarm or fail to regulate heating cycles.

See the test procedure for each cause

Frequently asked questions about F2

What does F2 mean on a Dacor range?
The F2 code on a Dacor range indicates a Heating Mode High Temperature alarm. It is activated when the Electronic Range Control senses a runaway heat condition, meaning oven temperatures have exceeded safe operating limits without being brought back under control. The most common causes are a stuck relay on the control board, a faulty oven temperature sensor, or damaged sensor wiring.
Is it safe to use my Dacor range when it shows an F2 error?
No, you should not use the oven while F2 is active. The code indicates the oven has lost proper temperature regulation, which poses a risk of overheating the appliance and its surroundings. Stop using the oven until the underlying cause has been identified and repaired.
Will resetting my Dacor range clear the F2 error?
Resetting the range by cycling power may temporarily clear the F2 code, but if the underlying cause is a stuck relay or defective sensor, the alarm will return once the oven heats up again. A reset alone does not fix the hardware problem. The root cause must be diagnosed and repaired to prevent the code from recurring.
How do I fix the F2 error on my Dacor range?
Start by checking the ERC relay board for a stuck relay, as this is the most common cause. If the relay is not at fault, test the oven temperature sensor and inspect its wiring harness for damage or poor connections. After completing any repairs, run the oven through a full self-clean cycle to confirm the temperature stays regulated without triggering F2 again.
How much does it cost to repair a Dacor range F2 error?
Repair costs vary depending on which component has failed. A replacement oven temperature sensor typically runs in the range of $20 to $80 for the part. An ERC relay board or full control board replacement can range from $150 to $400 or more for the part alone. Adding professional labor will increase the total cost, generally ranging from $100 to $200 depending on your location and the technician.

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