Dacor Oven E1 Error: Temperature calibration error
This dacor oven e1 error code guide explains what this fault means for your Dacor appliance and how to respond safely. What E1 Means on a Dacor Oven E1 signals that the oven control detected a temperature calibration discrepancy — the sensor reading and the expected temperature based on element cycle time do not agree […]
~40%
DIY Fixable
From $150
Typical Repair Cost
30-60 min
Pro Repair Time
Quick Assessment
Answer to continue safely
Is it safe to keep using?
Maybe. The oven heats but temperature accuracy may be off by 10-25 degrees. Use an oven thermometer to verify.
Can I reset the code?
Yes. Calibration errors sometimes clear after a factory reset via the control panel menu.
When to stop immediately?
Stop if you notice: Stop using the oven for temperature-sensitive baking until calibration is confirmed — consistent 40°F or more deviation is a food-safety concern., Stop if E1 appears every cook cycle without exception — the sensor or board requires physical replacement, not recalibration..
Symptoms You May Notice
Oven consistently under- or over-bakes
Food is reliably underdone or overcooked at the same temperature setting — a consistent 25°F or more deviation from the set point is the hallmark of E1.
E1 appears during preheating
The code displays while the oven is preheating, often after the display signals that the target temperature has been reached but actual heat feels noticeably off.
Independent thermometer confirms the gap
Placing a calibrated oven thermometer inside the cavity confirms the actual temperature is significantly different from the set temperature on the display.
E1 returns after clearing
Pressing Cancel clears E1 temporarily but it returns within one or two cook cycles — the underlying calibration drift is persistent, not a one-off event.
Possible Causes
Drifting RTD temperature sensor
The RTD probe reads correctly at room temperature but drifts off-spec at operating temperatures, causing the board to log a calibration mismatch during active cooking cycles.
DIY PossibleControl board calibration memory fault
The EOC board stores temperature calibration offset values in non-volatile memory. A power surge or board component aging can corrupt these values, causing systematic temperature error.
Requires ProfessionalSafe Checks You Can Do
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1
Verify temperature with an oven thermometer
Place a calibrated oven thermometer in the center of the oven cavity. Set the oven to 350°F and allow 20 minutes after the preheat signal. Read the thermometer and compare. A difference greater than 25°F points to a sensor or calibration fault.
Use the center rack position — temperatures near the walls can vary by 15-20°F normally.
Tools required -
2
Check temperature offset setting
Dacor ovens in the Heritage (HWO) and Modernist (DOB) series allow a user-accessible temperature calibration offset of ±35°F, accessible by pressing and holding the BAKE button for 5 seconds. If a previous offset was set incorrectly, reset it to 0°F as a starting point.
Consult the model-specific manual for the exact key sequence — it varies between Heritage and Modernist control panels.
When to Call a Professional
Contact a qualified technician if:
- RTD sensor resistance drifts more than 10 ohms at 350°F compared to a known-good reference — sensor replacement needed.
- Calibration offset set to 0°F but oven still deviates more than 35°F — board calibration memory has failed and EOC replacement is needed.
- E1 persists after new sensor installation — confirms board-side calibration fault.
Need Professional Help?
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