---
title: "Ice maker not working"
description: "Sub-Zero ice maker not working — production that stopped, or halved over a season."
url: "https://subzeromiami.support/symptoms/ice-maker-not-working/"
date_modified: "2026-08-18"
Appliance type: "Ice makers"
---


# Sub-Zero ice maker not working

### The fastest diagnosis is the code

Codes in the 30s and the water-valve range point straight at this, and they are the quickest way to separate a supply problem from a freeze-cycle one. If your display is showing anything, start there.

### Three places it usually is

- **Water supply.** A filter past its life, a valve that no longer opens fully, or a line restricted after a filter change — the last of those is why “stopped after I changed the filter” is a phrase we hear weekly.
- **The freeze cycle.** If the compartment cannot hold temperature, ice production is the first thing to suffer and the last thing to recover.
- **The condenser.** A unit working too hard to shed heat makes less ice long before it makes none.

### Cloudy ice is a message

On clear-ice machines, cloudiness means the freeze cycle is running differently from how it was designed to — water quality, cycle length or airflow. It is not cosmetic, and it usually arrives before production drops.

No ice, slow ice, cloudy ice

What it usually means

Stopped after a filter change

Half the ice it used to make

Cloudy cubes instead of clear

The fastest diagnosis is the code

Codes in the 30s and the water-valve range point straight at this, and they are the quickest way to separate a supply problem from a freeze-cycle one. If your display is showing anything, start there.

Three places it usually is

Water supply. A filter past its life, a valve that no longer opens fully, or a line restricted after a filter change — the last of those is why “stopped after I changed the filter” is a phrase we hear weekly.

The freeze cycle. If the compartment cannot hold temperature, ice production is the first thing to suffer and the last thing to recover.

The condenser. A unit working too hard to shed heat makes less ice long before it makes none.

Cloudy ice is a message

On clear-ice machines, cloudiness means the freeze cycle is running differently from how it was designed to — water quality, cycle length or airflow. It is not cosmetic, and it usually arrives before production drops.

The water filter, or the line after it

A filter past its life, or a line restricted after a filter change. “It stopped after I changed the filter” is a phrase we hear weekly, and it is usually air or a seating problem rather than the machine.

A water valve that no longer opens fully

Production drops before it stops. If ice is arriving slowly and small, the supply side is the place to look before the freeze cycle.

The condenser

A unit working too hard to shed heat makes less ice long before it makes none. Ice production is the first thing to suffer and the last to recover.

The freeze cycle itself

On clear-ice machines cloudiness means the cycle is running differently from how it was designed to. It is not cosmetic, and it usually arrives before production drops.

Check the filter and when it was changed

If ice stopped within a day of a filter change, that is almost certainly the connection. Check the part number against the model rather than against the last one bought.

Draw off several liters of water

Air in the line after a change usually clears this way, and it is the reason a new filter so often makes things briefly worse.

Look at whether ice is slow or absent

Slow and small points at the water side. None at all, with the compartment holding temperature, points at the freeze cycle. Cloudy cubes are their own message.

Then book the visit

Tell us the model, whether a filter was changed recently, and whether the cubes were cloudy before production dropped.

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