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Error code reference

Dacor Refrigerator Error Code Lo

Fan speed too slow (displayed initially during fan spin-up in service test; persistent display indicates fan…

Dacor codesDacor refrigerator codes

Fan speed too slow (displayed initially during fan spin-up in service test; persistent display indicates fan failure).

First step from the service manual

Allow fan a few seconds to spin up; if Lo persists, check fan motor and wiring.

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

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What Lo means on a Dacor refrigerator

The Lo error code on a Dacor refrigerator indicates that the control board has detected a fan operating below its expected minimum speed threshold. This code is tied to the fan speed monitoring circuit, which tracks rotational feedback from the fan motor. During a service test spin-up sequence, the fan requires a few seconds to reach its rated operating speed, so a brief Lo display at the start of a test is normal and expected behavior. If the code clears once the fan reaches speed, no fault is present.

When Lo persists beyond the initial spin-up period, the control board is interpreting the fan speed signal as continuously below the acceptable range, which points to a genuine fan circuit fault. The most common causes include a failing fan motor that cannot sustain adequate RPMs, a wiring harness issue causing a degraded or intermittent signal back to the board, or a mechanical obstruction preventing the fan from spinning freely. Ice buildup around the fan blade is also a known contributor, particularly in evaporator fan applications.

Diagnosis should begin by allowing the fan several seconds to spin up during a service test before concluding a fault exists. If Lo remains on the display, inspect the fan blade for obstructions, check wiring connectors for corrosion or loose pins, and test the fan motor directly for proper operation. A motor that runs slowly or inconsistently under load will need replacement. The control board should only be considered a suspect after the motor and wiring have been ruled out.

Source: manufacturer service documentation.

Common causes of Lo

  1. 01

    Failing fan motor

    Part replacement

    A worn or failing fan motor may not reach or maintain the minimum required speed. Signs include unusual noise from the fan, slow blade rotation when tested manually, or no rotation at all.

  2. 02

    Ice buildup obstructing the fan blade

    Wiring / connection

    Ice accumulation around the evaporator fan can physically block the blade from reaching full speed. Inspecting the fan compartment after defrosting the unit will confirm or rule out this cause.

  3. 03

    Loose or damaged wiring connector

    Wiring / connection

    A loose, corroded, or broken connector in the fan motor wiring harness can interrupt the speed feedback signal to the control board. Inspect all connectors leading to the fan motor for damage or poor seating.

  4. 04

    Mechanical obstruction at the fan blade

    Wiring / connection

    Debris, displaced insulation, or a dislodged component can contact the fan blade and slow its rotation. A visual inspection of the fan area will typically identify this quickly.

  5. 05

    Control board fault

    Part replacement

    If the fan motor and all wiring check out correctly, the control board may be misreading the speed signal or failing to supply proper voltage to the motor. This is the least likely cause and should be diagnosed last.

See the test procedure for each cause

Frequently asked questions about Lo

What does Lo mean on a Dacor refrigerator?
The Lo code indicates the control board has detected a fan running below its minimum acceptable speed. During a service test, this code may appear briefly while the fan spins up, which is normal. If Lo stays on the display after a few seconds, it signals a fan motor or wiring fault that requires further diagnosis.
How do I fix the Lo error code on my Dacor refrigerator?
Start by allowing a few seconds during the fan spin-up phase to see if the code clears on its own. If it persists, inspect the fan blade for ice buildup or obstructions, and check the wiring connectors for corrosion or loose pins. If those check out, test the fan motor directly and replace it if it is not reaching proper speed. Control board replacement should only be considered after the motor and wiring have been ruled out.
Is it safe to keep using my Dacor refrigerator when Lo is displayed?
A persistent Lo code means a fan is not operating correctly, which can compromise cooling performance throughout the refrigerator or freezer compartment. Continued use risks food spoilage and potential compressor strain from poor airflow. It is best to address the issue promptly rather than operate the unit with a confirmed fan fault.
How much does it cost to repair a Lo fan error on a Dacor refrigerator?
If the fix is simply clearing an ice obstruction or reseating a wiring connector, costs are minimal. Fan motor replacement typically runs in the range of $75 to $200 for the part alone, with additional labor costs if a technician is hired. Control board replacement, if needed, is a higher-cost repair that can range from $200 to $500 or more depending on the specific model.
Will resetting my Dacor refrigerator clear the Lo error code?
A power reset may temporarily clear the Lo display, but if the underlying fan issue is still present, the code will return once the control board monitors fan speed again. Resetting the unit is not a fix and should not be relied upon as a solution. The fan motor, wiring, and any physical obstructions need to be addressed to permanently resolve the code.

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