---
title: "A Dryer That Tumbles Cold: What to Check, in Order"
description: "How to fix LG dryer not heating: why half a double breaker gives a machine that tumbles cold, what nP means, and why a cutoff is a message about the"
url: "https://lgmiami.support/blog/lg-dryer-not-heating/"
date_modified: "2026-09-05"
Category: "Common Problems"
---


# A Dryer That Tumbles Cold: What to Check, in Order

## How to fix LG dryer not heating: the free check first

Go to the breaker panel before you do anything else.

An electric dryer is fed by two 120-volt legs. The motor, the drum light and the control board run from one of them. The heating element needs both. So when one leg goes away — a half-tripped double breaker, a loose connection at the outlet, a worn cord — everything visible keeps working perfectly and the machine simply never gets hot.

It is the most convincing failure in the laundry room and one of the cheapest to resolve. Find the dryer's breaker, which is a double with two switches joined, and switch it **fully off and then fully on**. Do not inspect it: a half-tripped double breaker frequently looks completely normal from the front, which is exactly why this has to be done rather than looked at.

If the machine heats afterwards, that was the entire problem.

## What the machine calls it

LG publishes **nP** for no current arriving at the heater, which is an honest description of the symptom rather than a diagnosis of the cause. Behind it are three parts and one habit.

## The cutoff is a message, not a part

If the thermal cutoff has opened, replacing it is only half the repair.

A cutoff is a safety device. It opens when the machine has run hotter than it was designed to, and it does not reset — it is a one-way part on purpose. So a cutoff that has blown is telling you something got too hot, and on a vented dryer the reason is nearly always restricted air.

Fitting a new cutoff and leaving the duct packed means doing the same job again in a few months, with a hotter machine in between. Any repair here that does not include clearing the duct is not finished.

## Then the element

An electric dryer's element is a coil of resistance wire inside a metal can at the back of the cabinet. It fails open, which is measurable, and it is a straightforward part on a make with LG's parts availability — a stocked item rather than an order.

The thermostats sit alongside it and fail in the same way, which is why the sensible repair replaces the set rather than one at a time. Piecemeal is a second visit.

## On a gas dryer it is nearly always the igniter

Gas machines produce the same symptom by a completely different route, and the part that ages is the igniter.

The safety valve on a gas dryer is opened by the current the igniter draws, not by a separate control. So an igniter that has weakened over years will still **glow** — brightly enough to look perfectly healthy — and still never open the valve. "It glows so it must be fine" is the most common wrong conclusion in this repair, and it is why the igniter is measured rather than looked at.

Watch a full ignition attempt through the lower vent: bright orange glow, then flame within about a minute. A glow that fades with no flame is the diagnosis.

## What this page is not about

If your dryer gets warm and simply takes forever, or stops after a few minutes with a hot cabinet, that is airflow rather than heat, and it has its own page. The distinction is worth holding onto:

- **Tumbles completely cold** — supply, cutoff, element, or on gas the igniter. This page.- **Warm but slow, or hot and stopping** — the duct, the lint screen, the wall hood. The other one.

LG helps with the second in a way most makes do not: it measures the restriction in its own exhaust and prints a number on the display. If you have ever seen **d80**, **d90** or **d95**, the machine has already told you which page you are on.

## The order, then

- Reset the double breaker fully off and on.- Clean the lint screen and check the duct anyway — a cutoff that opened did so for a reason.- Feel the exhaust at the wall hood outside after ten minutes of a heated cycle.- On gas, watch the igniter for a full minute.- If it is still cold, book it, and mention whether it is gas or electric — they are different parts and different visits.

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