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Error code reference

Dacor Refrigerator Error Code Hi

Fan speed too fast detected during fan service test.

Dacor codesDacor refrigerator codes

Fan speed too fast detected during fan service test.

First step from the service manual

Check fan motor and Main Control Board output.

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

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What Hi means on a Dacor refrigerator

The "Hi" error code on a Dacor refrigerator is triggered when the control system detects that a fan motor is running at a speed higher than its programmed threshold during a fan service test. This code is specific to the fan speed monitoring function, which uses feedback signals from the fan motor to verify that the motor is operating within its expected RPM range. When the detected speed exceeds the upper limit, the control board flags the "Hi" condition to alert the technician or user that something is outside of normal parameters.

The Main Control Board plays a central role in this diagnostic. The board sends a drive signal to the fan motor and simultaneously reads the tachometer or feedback signal returning from the motor. If that feedback indicates excessive rotational speed, the "Hi" code is generated. This can point to a fault in the fan motor itself, where the motor windings or internal speed control circuitry are sending incorrect speed signals, or it can indicate that the Main Control Board is delivering an incorrect drive voltage or PWM signal that is causing the motor to over-speed.

Diagnostic steps should begin by inspecting the fan motor for physical damage and verifying that the motor's feedback signal is accurate and consistent. Next, the output signal from the Main Control Board to the fan motor should be checked to confirm that the drive signal is within the correct range. A board outputting excess voltage or an incorrect duty cycle can force the fan into an over-speed condition even if the motor itself is functioning correctly.

Source: manufacturer service documentation.

Common causes of Hi

  1. 01

    Faulty Fan Motor

    Part replacement

    The fan motor's internal speed control or tachometer feedback circuitry can fail, causing it to report or operate at incorrect speeds. Inspect the motor for physical damage and verify its feedback signal during the service test.

  2. 02

    Incorrect Main Control Board Output

    Part replacement

    The Main Control Board may be sending an incorrect drive voltage or PWM duty cycle to the fan motor, forcing it to spin faster than intended. Check the board's output signal to the fan and compare it against the expected operating parameters.

  3. 03

    Wiring or Connector Issue

    Wiring / connection

    A short, damaged wire, or loose connector between the Main Control Board and the fan motor can cause erroneous speed signals to be read by the board. Inspect the wiring harness and connector pins for corrosion, damage, or intermittent contact.

  4. 04

    Software or Control Board Calibration Error

    Wiring / connection

    In some cases, a software glitch or corrupted calibration setting on the Main Control Board can cause the fan speed threshold to be misread. A control board reset or firmware update may resolve this if hardware components test correctly.

See the test procedure for each cause

Frequently asked questions about Hi

What does Hi mean on a Dacor refrigerator?
The "Hi" code on a Dacor refrigerator indicates that a fan motor was detected running at a speed higher than the expected threshold during a fan service test. The control system monitors fan speed through a feedback signal and triggers this code when that signal exceeds its upper limit. The two primary suspects are the fan motor itself and the Main Control Board that drives it.
Can I fix the Hi error code on my Dacor refrigerator myself?
Some causes, such as a loose wiring connector or harness issue, can be addressed by a confident DIYer with basic electrical knowledge. However, diagnosing whether the fault lies in the fan motor or the Main Control Board requires the ability to measure drive signals and interpret feedback data from the motor. Replacing either of these components without proper diagnosis can be costly, so professional service is recommended if you are not comfortable with electrical testing.
Is it safe to keep using my Dacor refrigerator when the Hi error is showing?
An over-speed fan condition can indicate that a component is operating outside its designed parameters, which may put additional stress on the motor or control board over time. While the refrigerator may continue cooling in the short term, it is best to address the error promptly to avoid further component damage or potential cooling failures.
How much does it cost to repair a Dacor refrigerator with a Hi error code?
Repair costs depend on which component is at fault. Fan motor replacement typically ranges from $75 to $200 for parts, while a Main Control Board can range from $150 to $400 or more. Adding labor costs, total repair bills commonly fall between $150 and $600 depending on the specific part needed and local service rates.
Will resetting my Dacor refrigerator clear the Hi error code?
A reset may temporarily clear the Hi error code, but if the underlying cause is a failing fan motor or a faulty Main Control Board output, the code is likely to return when the fan service test runs again. Resetting the unit is a reasonable first step to rule out a transient software glitch, but it should not be considered a fix unless the code does not reappear after normal operation.

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