---
title: "Dryer moisture sensor service"
description: "Samsung dryer moisture sensor service: loads that stop while still damp, or run far longer than they should, with no code at all."
url: "https://samsungmiami.support/services/dryer-moisture-sensor-service/"
date_modified: "2026-09-04"
Appliance type: "Dryers"
---


# Samsung dryer moisture sensor service

### Two metal strips and a film you cannot see

The sensor bars inside the drum feel wet fabric touching them, and that is how the machine knows when to stop. Fabric softener leaves a film on those bars that insulates them, so the dryer believes the load is dry when it is not — or, less often, wet when it is not, and runs for hours. Cleaning them with rubbing alcohol is the first move and it is frequently the whole repair.

What this involves

Sensor bars cleaned and the circuit tested

oD and the timing complaints that come with no code

The softener habit that caused it explained honestly

Clean the bars and test again

Rubbing alcohol on the metal strips inside the drum. If the behavior changes, the repair was five minutes and the rest is advice.

Clean the bars and run a real load

Rubbing alcohol on the two metal strips, then a normal load rather than a test. If the behavior changes, the repair was five minutes.

Test the sensing circuit

If clean bars change nothing, the wiring to them or the control that reads them is the question, and that is measured.

Check the lint screen while we are there

The same film that insulates the bars blocks the screen, and the two arrive together.

### Should I stop using fabric softener?

Not necessarily, but use less of it and clean the bars occasionally. Dryer sheets leave the same film on the lint screen, which is the other half of the same problem.

### Will you tell me the price before you start?

Yes, in writing, after the diagnostic and before anything is opened. Every figure on this site is a starting point; the number you agree to is the one you pay.

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**[Read full article: Dryer moisture sensor service](https://samsungmiami.support/services/dryer-moisture-sensor-service/)**