---
title: "Heat pump dryer service"
description: "LG heat pump dryer service — a ventless machine has no duct and no element. It has a refrigerant loop, a condenser block, a lint system with two filters…"
url: "https://lgmiami.support/services/heat-pump-dryer-service/"
date_modified: "2026-09-06"
Appliance type: "Dryers"
---


# LG heat pump dryer service

### The maintenance nobody mentioned at delivery

A vented dryer had one lint screen and a duct somebody else worried about. This machine has a screen in the door, a second finer filter beneath it, a condenser block behind a hatch at the bottom, and a tray or a pump that has to get rid of a couple of quarts of water out of every load. The first filter wants clearing every load, the second every few loads, and the condenser every couple of months with a rinse rather than a brush. Skip it and the machine does not break: it slows, gently, until a load takes twice as long, and then it stops and reports the condensate path with drn.

What this involves

drn and OE are the condensate codes and only exist on these machines

The condenser block slides out and is designed to be cleaned

Dearer parts and a longer diagnosis than a vented machine

Empty and check the water path

Container or drain hose. A full container stops the machine by design.

Clean the condenser block

It slides out of the base and rinses. It is the single most neglected part on these.

Clean both lint filters

There are two, and the second one is behind the first.

Test the loop

A machine that runs and never warms is a sealed-system diagnosis rather than a heater one.

Verify a full drying cycle

These machines dry more slowly by design. The test is a finished load, not a warm drum.

### Mine dries more slowly than my old dryer. Is that a problem?

A ventless machine is slower by design and gentler on clothes because of it. Slower than it was six months ago is the sentence that matters, and that is nearly always the two filters and the condenser.

### Where does the water go?

Into a drawer you empty, or out through a hose to the standpipe if it was installed that way. A machine that stops mid-cycle and will not restart is often a full drawer or a kinked hose, and both are worth checking before you book.

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