---
title: "Samsung dishwasher error code 3E"
description: "Samsung dishwasher error code 3E: The dishwasher measured its supply and found it hotter than it will accept."
url: "https://samsungmiami.support/error-codes/dishwasher-3e/"
date_modified: "2026-09-04"
Appliance type: "Dishwashers"
---


# Samsung dishwasher error code 3E

### What 3E means on this make

The dishwasher measured its supply and found it hotter than it will accept. Samsung’s own limit is 176°F, and a house water heater set very high — or a tankless unit set for a long-run shower — will exceed it. This is not a machine problem and the fix is upstream, which is worth knowing before anyone is called out.

### Where this appears, and why not to clear it

On the appliance’s own display. Samsung reports errors two ways: machines with a digital display show a code, and the same machines without one blink their cycle lights instead. Both are published by the maker and both are on this site. Photograph what the panel shows before cutting the power — Samsung asks for this itself on its refrigerator and dishwasher pages, and it is the one thing that makes a first visit more useful. A code that has been reset is information a technician no longer has.

### What to do about it

- Check the setting on the water heater. Anything above 176°F will produce this.
- On a tankless heater, check what the unit is set to deliver rather than what the tap feels like.
- If the supply is within range and the code stays, the temperature sensing in the machine is what to look at.

### Where this goes next

The job this usually becomes is [diagnostic visit](/services/diagnostic-visit/), and that page carries a starting figure and the reasons that move it. If it turns out to be nothing — and on this make a real share of these are modes, reminders and settings rather than problems — the visit ends there and you pay the diagnostic and nothing else, or call [(305) 506-1256](tel:+13055061256) and describe what the panel is doing before booking anything.

High temperature water supply error

What this one means

What 3E means on this make

The dishwasher measured its supply and found it hotter than it will accept. Samsung’s own limit is 176°F, and a house water heater set very high — or a tankless unit set for a long-run shower — will exceed it. This is not a machine problem and the fix is upstream, which is worth knowing before anyone is called out.

Where this appears, and why not to clear it

On the appliance’s own display. Samsung reports errors two ways: machines with a digital display show a code, and the same machines without one blink their cycle lights instead. Both are published by the maker and both are on this site. Photograph what the panel shows before cutting the power — Samsung asks for this itself on its refrigerator and dishwasher pages, and it is the one thing that makes a first visit more useful. A code that has been reset is information a technician no longer has.

What to do about it

Check the setting on the water heater. Anything above 176°F will produce this.

On a tankless heater, check what the unit is set to deliver rather than what the tap feels like.

If the supply is within range and the code stays, the temperature sensing in the machine is what to look at.

Where this goes next

The job this usually becomes is diagnostic visit, and that page carries a starting figure and the reasons that move it. If it turns out to be nothing — and on this make a real share of these are modes, reminders and settings rather than problems — the visit ends there and you pay the diagnostic and nothing else, or call [(305) 506-1256](tel:+13055061256) and describe what the panel is doing before booking anything.

---

**[Read full article: Samsung dishwasher error code 3E](https://samsungmiami.support/error-codes/dishwasher-3e/)**