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Error code reference

U-Line Ice Maker Error Code 10

Door 2 open error (displayed as 10 on control).

U-Line codesU-Line ice maker codes

Door 2 open error (displayed as 10 on control).

First step from the service manual

Check door switch and alignment.

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

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What 10 means on a U-Line ice maker

Error code 10 on a U-Line ice maker indicates a Door 2 open error. The control board monitors the state of the secondary door through a dedicated door switch circuit. When the control detects that Door 2 has been open beyond an acceptable threshold, or that the door switch is reporting an open state when the door should be closed, it triggers this fault code. The error is displayed numerically as "10" on the unit's control panel.

The door switch itself is a simple mechanical or magnetic switch that signals the control board whether the door is in a fully closed and latched position. If the switch fails to make proper contact, if the door is physically misaligned and not seating correctly against the switch actuator, or if the wiring between the switch and the control board is compromised, the board will continuously read the door as open. This condition can disrupt normal ice-making cycles, as many units are programmed to halt production or pause refrigeration when a door open state is detected.

Diagnosis should begin with a physical inspection of Door 2 and its alignment relative to the cabinet frame. Check for any obstructions preventing full closure, inspect the door gasket for deformation, and confirm the door switch is being actuated when the door is closed. If alignment and obstructions are ruled out, test the switch for continuity using a multimeter to determine whether the component itself has failed.

Source: manufacturer service documentation.

Common causes of 10

  1. 01

    Door misalignment

    Wiring / connection

    The door may have shifted out of alignment with the cabinet, preventing it from fully depressing the door switch actuator when closed. Inspect the door hinges and check that the door sits flush and even against the cabinet frame.

  2. 02

    Faulty door switch

    Part replacement

    The door switch itself may have failed mechanically or electrically and no longer makes proper contact even when the door is fully closed. Test the switch for continuity with a multimeter: a functioning switch should show continuity when actuated.

  3. 03

    Damaged or compressed door gasket

    Part replacement

    A worn or deformed door gasket can prevent the door from seating fully against the cabinet, keeping the switch from being triggered. Inspect the gasket around the perimeter of Door 2 for tears, flattening, or gaps.

  4. 04

    Obstruction blocking door closure

    Wiring / connection

    Ice buildup, a misplaced item, or debris near the door frame can physically block Door 2 from closing completely. Visually inspect the door opening and interior edges for anything interfering with full closure.

  5. 05

    Wiring or connector issue at door switch

    Wiring / connection

    Loose, corroded, or damaged wiring between the door switch and the control board can cause the board to read a constant open-door signal. Inspect the switch connector and wiring harness for visible damage or looseness.

See the test procedure for each cause

Frequently asked questions about 10

What does 10 mean on a U-Line ice_maker?
Error code 10 on a U-Line ice maker is a Door 2 open error. It means the control board is detecting that the secondary door is open or that the door switch is not registering a closed position. This can interrupt normal ice-making operation until the condition is resolved.
How do I fix error code 10 on my U-Line ice maker?
Start by checking that Door 2 is fully closed and that nothing is obstructing it. Inspect the door alignment and hinges to make sure the door seats evenly against the cabinet. If the door appears properly closed, test the door switch for continuity using a multimeter. A failed switch will need to be replaced to clear the error.
Will resetting my U-Line ice maker clear error code 10?
A reset may temporarily clear the code from the display, but if the underlying cause, such as a misaligned door or a faulty door switch, has not been corrected, the error will return. It is important to diagnose and fix the root cause before relying on a reset.
Is error code 10 on a U-Line ice maker a safety concern?
While a door open error is not typically an immediate safety hazard, leaving it unaddressed can affect the unit's performance. An unresolved door fault may cause the ice maker to pause production cycles or allow temperature fluctuations that reduce efficiency and ice quality.
How much does it cost to repair error code 10 on a U-Line ice maker?
If the fix is simply a door realignment or clearing an obstruction, there may be little to no parts cost involved. If the door switch needs replacement, parts typically cost in the range of $15 to $50 depending on the specific switch required, with additional labor costs if a technician is involved. A door gasket replacement, if needed, generally falls in the $20 to $75 range.

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