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Error code reference

Dacor Refrigerator Error Code F1

Air sensor fault detected; compressor is switched off when this sensor error is detected.

Dacor codesDacor refrigerator codes

Air sensor fault detected; compressor is switched off when this sensor error is detected.

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What F1 means on a Dacor refrigerator

The F1 error code on a Dacor refrigerator indicates a fault with the air sensor, which is a thermistor responsible for monitoring air temperature within the refrigerator compartment. When this sensor error is detected, the control board immediately switches off the compressor as a protective measure to prevent potential overcooling or undercooling of the compartment. The air sensor communicates temperature data to the main control board by varying its electrical resistance as temperature changes, and any reading that falls outside the expected range will trigger the F1 fault.

The most common causes of this fault include a failed thermistor, a wiring harness break or connector corrosion between the sensor and the control board, or a short circuit in the sensor circuit. Thermistors used in refrigerator air sensing typically change resistance predictably with temperature, so a reading that is open-circuit, shorted to ground, or stuck at a fixed value will signal a fault condition. Inspecting the sensor's resistance with a multimeter and comparing against the expected temperature-to-resistance curve is a key diagnostic step.

Because the compressor is disabled when F1 is active, the refrigerator will not maintain proper cooling, meaning food safety becomes a concern relatively quickly. Resolving the fault requires identifying whether the sensor itself has failed or whether the fault lies in the wiring or the control board. Replacing the air sensor is a common repair, but technicians should verify the wiring harness integrity and connector condition before condemning the sensor or the board.

Source: manufacturer service documentation.

Common causes of F1

  1. 01

    Failed air sensor thermistor

    Part replacement

    The thermistor itself may have failed open or shorted internally, producing a resistance value outside the normal operating range. Testing the sensor with a multimeter across its terminals will reveal an out-of-range or erratic resistance reading if the component has failed.

  2. 02

    Damaged or corroded wiring harness

    Wiring / connection

    Breaks, pinches, or corrosion in the wiring between the air sensor and the main control board can interrupt or distort the sensor signal. Visually inspect the harness and connectors for damage, moisture intrusion, or corrosion at the connector pins.

  3. 03

    Loose or disconnected sensor connector

    Wiring / connection

    A connector that has worked loose from vibration or during a previous repair can cause an intermittent or permanent open-circuit reading. Check that the sensor connector is fully seated and that the locking tab is engaged.

  4. 04

    Short circuit in the sensor circuit

    Wiring / connection

    A chafed wire making contact with the refrigerator cabinet or another conductor can create a short that pulls the sensor reading out of range. Inspect the full length of the sensor wiring for spots where insulation has worn through.

  5. 05

    Faulty main control board

    Part replacement

    If the sensor and all wiring check out correctly, the control board's sensor input circuit may have failed, causing it to misread or reject valid sensor data. This is the least common cause and should only be considered after all other components test within specification.

See the test procedure for each cause

Frequently asked questions about F1

What does F1 mean on a Dacor refrigerator?
F1 on a Dacor refrigerator signals an air sensor fault, meaning the control board has detected a problem with the thermistor that monitors compartment air temperature. As a protective response, the control board shuts off the compressor when this fault is active. The refrigerator will not cool properly until the sensor fault is diagnosed and resolved.
Can I fix the F1 error on my Dacor refrigerator myself?
Some causes of the F1 error, such as a loose sensor connector or a visually damaged wire, can be addressed by a knowledgeable DIYer. However, accurately diagnosing a failed thermistor requires a multimeter and familiarity with reading resistance values. Replacing the control board, if needed, is also within DIY range but carries more risk if the wrong component is condemned, so professional diagnosis is advisable when basic checks do not resolve the fault.
Is my food safe when the F1 error is showing on my Dacor refrigerator?
Because the F1 fault causes the compressor to shut off, the refrigerator will gradually lose its cold temperature. Food safety depends on how long the fault has been active and the ambient temperature of the room. As a general guideline, perishables should not remain above 40 degrees Fahrenheit for more than two hours, so addressing the fault promptly is important.
How much does it cost to repair a Dacor refrigerator F1 error?
Repair costs vary depending on which component has failed. Replacing an air sensor thermistor typically runs in the range of $50 to $150 for parts and labor if the sensor alone is at fault. If the wiring harness needs repair the labor cost may increase, and a main control board replacement can bring total costs to the range of $200 to $450 or more depending on the specific model and service rates in your area.
Will resetting my Dacor refrigerator clear the F1 error code?
A power reset, such as unplugging the unit for a few minutes and restoring power, may temporarily clear the F1 code if the fault was caused by a transient condition. However, if the underlying issue is a failed sensor, damaged wiring, or a faulty control board, the error will return as soon as the refrigerator attempts normal operation. A reset is useful for ruling out a one-time glitch but should not be relied on as a fix.

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