Samsung dishwasher 3E: Incoming water is too hot

Documentation checkedBy ErrHiveUpdated October 28, 2026

THE SHORT ANSWER

Incoming water is too hot.

3E is a high-temperature water-supply warning in Samsung US guidance. Have the supply checked against the model’s installation limits.

First safe check

Review the water-heater and installation settings without exposing yourself to hot water.

Applies to

Samsung dishwasher families covered by the cited US guidance. Match the full model number and exact display; this is not an exact-model compatibility claim.

Before you start

Let the interior cool before reaching inside. Watch for sharp debris. Leave electrical, heater and pump access to a qualified technician.

Go to safe checks

WHAT YOU MAY NOTICE

Symptoms to record

The dishwasher displays 3E.

WORK THROUGH THE BASICS

Safe troubleshooting checks

0 of 2 checked

Use the checkboxes to keep track as you read. Stop at any warning or step that does not match your appliance.

Check the specified supply range
Samsung’s dedicated supply guide specifies 120–149°F; use the exact manual’s limit and an installer if the supply is uncertain.
What to note
The incoming supply meets the applicable requirement.
Escalate a repeat
If 3E continues with a verified correct supply, request service.
What to note
The remaining fault is assessed professionally.

THE DETAILS MATTER

Scope & troubleshooting notes

How to interpret this result

The broad code list mentions 176°F, while the dedicated supply guide warns against exceeding 149°F. Do not treat 176°F as a recommended setting or increase temperature to test this fault.

YOUR NEXT DECISION

When to stop and get help

Stop for excessively hot supply, steam or a recurring 3E; use a plumber or qualified service provider.

Record what you see

Keep the full model number, exact displayed code, and your observations together for the next conversation.

Use the right support

Contact the manufacturer or a qualified appliance technician when the guide calls for service.

Samsung support

THE EVIDENCE

Sources & verification

Our explanations are editorial summaries of the documentation below. They do not replace the instructions for your exact appliance.

Samsung dishwasher is displaying an error code
Samsung · Manufacturer support · Checked Oct 28, 2026
Code-specific headings — Samsung US consumer support; check the model manual before applying a procedure.
Samsung dishwasher water supply requirements
Samsung · Manufacturer support · Checked Oct 28, 2026
Temperature and pressure requirements — Samsung US consumer support; check the model manual before applying a procedure.

ErrHive is an independent information resource, not an authorized representative of Samsung. Follow your appliance’s manual. Hazardous repairs belong with qualified professionals. Read our safety policy.