---
title: "Water dispenser and filter service"
description: "LG water dispenser and filter service: the cheapest refrigeration row on this site and the one most often mistaken for something larger."
url: "https://lgmiami.support/services/water-dispenser-and-filter-service/"
date_modified: "2026-09-06"
Appliance type: "Freezers, Ice makers, Refrigerators, Wine coolers"
---


# LG water dispenser and filter service

### What to do on the day you change the filter

Half the calls on this row arrive within a week of a new cartridge, and most of them are air rather than a part. After a filter change, run four quarts through the dispenser and throw it away: the line is full of air, it will spit, and a machine with air in the system will also stop making ice for a day or so. If nothing comes out at all, check the shutoff behind the machine and the dispenser lock on the control panel before anything else — that lock gets switched on during a wipe down of the door and is almost never switched back off on purpose.

What this involves

Filter, housing, tank, line and valve, in that order

A cartridge a few millimeters proud weeps steadily and is missed for months

Air in the line after a change is normal and clears itself

Establish what water does

None, slow, or fine but no ice. Three different starting points.

Reseat or replace the cartridge

Turned fully home, O-ring intact. This is the whole answer more often than people expect.

Flush the line

Several liters through the dispenser. Air after a filter change is normal and looks like a failure.

Test the valve

The inlet solenoid, measured. A valve that is partly open produces hollow cubes and a slow dispenser at the same time.

Check the tank and the housing for weeps

Where an LG model has an internal tank, tt is its code and a missing or unseated tank is the usual reason.

### Do I have to use LG's own filter?

We fit OEM parts and we recommend them here, because an aftermarket cartridge that seats a fraction differently is the single commonest cause of a slow dispenser and a drip at the head. It is your call and we will always tell you what we are fitting.

### The water pours warm now. Is that the same problem?

Usually the tank rather than the valve. Some cabinets hold their cold water in a tank inside the fresh food compartment, and a machine that has just been through a defrost problem or a long door-open will pour warm for an hour and then recover.

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**[Read full article: Water dispenser and filter service](https://lgmiami.support/services/water-dispenser-and-filter-service/)**