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Error code reference

Miele Refrigerator Error Code 3-2-3

Icemaker

Miele codesMiele refrigerator codes

Icemaker: Water fill valve faulty.

First step from the service manual

Check water fill valve; if valve is okay, replace icemaker.

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

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What 3-2-3 means on a Miele refrigerator

Error code 3-2-3 on a Miele refrigerator indicates a fault detected in the icemaker's water fill valve. The water fill valve is an electrically operated solenoid valve that controls the flow of water from the household supply line into the icemaker tray. When the icemaker calls for a fill cycle, the control board sends a voltage signal to open the solenoid, allowing a measured volume of water to enter. If the control board cannot confirm proper valve operation, whether due to an electrical fault, a failed solenoid coil, or an obstruction preventing the valve from opening or closing correctly, it logs this error code.

The diagnostic process starts by inspecting the water fill valve itself. A faulty solenoid coil will often show an open circuit or out-of-specification resistance when tested with a multimeter. The valve body should also be checked for mineral buildup or debris at the inlet screen, which can restrict flow and cause the valve to behave erratically. If the valve tests within acceptable parameters and shows no mechanical obstruction, the fault likely originates inside the icemaker module itself, and Miele's guidance directs technicians to replace the entire icemaker assembly as the next corrective step. Wiring harness continuity between the control board and the valve should also be verified before condemning either component.

Source: manufacturer service documentation.

Common causes of 3-2-3

  1. 01

    Failed solenoid coil in the water fill valve

    Part replacement

    The solenoid coil inside the fill valve can burn out or develop an open circuit, preventing the valve from opening on command. Testing the coil with a multimeter for continuity and proper resistance will confirm this failure.

  2. 02

    Clogged inlet screen or mineral deposits

    Wiring / connection

    Sediment or limescale buildup at the valve's inlet screen can restrict water flow enough to trigger a fault. Inspect the screen for debris and check for visible scaling on the valve body.

  3. 03

    Wiring or connector fault between control board and valve

    Wiring / connection

    A broken wire, corroded terminal, or loose connector in the harness running to the fill valve can interrupt the signal needed to operate the valve. A continuity check of the harness will identify this issue.

  4. 04

    Faulty icemaker module

    Part replacement

    If the water fill valve checks out electrically and mechanically, the fault can originate within the icemaker module's internal control circuitry. Miele's diagnostic guidance directs replacement of the icemaker assembly when the valve itself is confirmed to be functional.

  5. 05

    Insufficient water supply pressure

    Wiring / connection

    Low household water pressure can prevent the fill valve from opening fully, causing the icemaker to register a fill fault. Verify that the supply line shut-off is fully open and that line pressure meets the refrigerator's requirements.

See the test procedure for each cause

Frequently asked questions about 3-2-3

What does 3-2-3 mean on a Miele refrigerator?
Error code 3-2-3 indicates a fault with the icemaker's water fill valve. The refrigerator's control system has detected that the solenoid valve responsible for filling the ice maker with water is not operating correctly. This can be caused by a failed valve coil, a wiring problem, or a fault within the icemaker module itself.
Can I fix error code 3-2-3 myself?
Some steps, like checking the water supply line, inspecting the inlet screen for clogs, and verifying the shut-off valve is fully open, are within reach of a confident DIYer. However, testing the solenoid coil with a multimeter and replacing the fill valve or icemaker assembly typically require familiarity with appliance repair and working around electrical components. If you are not comfortable with those tasks, a qualified technician is the safer option.
Is error code 3-2-3 on a Miele refrigerator a safety concern?
This error code is not a safety hazard. It indicates an icemaker function fault, not a problem with refrigeration, food safety, or a risk of electrical danger under normal conditions. Your refrigerator will continue to cool and freeze food normally, but ice production will be affected until the fault is resolved.
How much does it cost to repair error code 3-2-3 on a Miele refrigerator?
Costs vary depending on which component has failed. Replacing a water fill valve typically runs in the range of $80 to $200 for parts, while a full icemaker assembly replacement can cost $150 to $400 or more for the part alone. Adding professional labor will increase the total, and Miele appliances often carry higher service costs than standard brands due to part pricing and specialized technician requirements.
Will resetting the refrigerator clear error code 3-2-3?
A power reset may temporarily clear the displayed code, but it will not resolve the underlying fault with the water fill valve or icemaker. If the component is genuinely defective, the error will return once the icemaker attempts another fill cycle. The fault needs to be diagnosed and the faulty component repaired or replaced for the code to stay clear.

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