Samsung · Dishwasher · Water Supply Issue

Samsung Dishwasher Error 4C

Samsung dishwasher error 4C usually indicates a water-supply fault. ECL records this code as “Water Supply Error”. Common causes on this page include Closed tap and Kinked hose, but the exact cause can vary by model and appliance generation. Start with the safe external checks below, confirm model-specific guidance using your exact model number, and arrange repair help if the code returns or any safety warning applies.

Quick answer: Water Supply Error

In simple terms

Samsung dishwasher code 4C usually means Water Supply Error. Follow these four steps.

1Understand the code

See what the code usually means and why it may have appeared.

2Try safe checks

Try only the simple checks listed on this page. Do not take the appliance apart.

3Check if it is safe to use

Check the safety section before you keep using the appliance.

4Choose the next step

Use the next-step box to see whether to keep checking, find a part by model or get repair help.

What Samsung 4C means

Dishwasher is not filling with water.

Common causes

  • Closed tap
  • Kinked hose
  • Blocked inlet filter

Safe checks you can make

  1. Check water tap
  2. Inspect inlet hose

Repair help

Try the safe checks first

Start with the simple checks on this page. If the code comes back, stop guessing and get repair help.

Still showing? Get repair help Check parts using your model number

Before buying a part: confirm the full model number and check the seller's part number. A fault code alone is not enough.

No obligation. Your contact details are only shared after you submit the repair request, and only with a suitable ECL Verified repairer where coverage is available.

When to stop and call an engineer

If standard user maintenance does not clear the error, or if you suspect an electrical component failure.

Your model may be different

Error-code meanings can vary by model, market and appliance generation. Confirm Samsung 4C against the instruction manual or support information for the exact model number before replacing parts or treating this page as a model-specific diagnosis.

Where this information comes from

Publisher: Error Code Lookup Editorial Team. This page is independent information written in our own words and reviewed with safety boundaries in mind.

Manufacturer information: Samsung UK Home Appliance Support. Use the exact model number to verify model-specific wording and instructions.

Last reviewed: 2026-05-18

How Error Code Lookup researches and verifies pages · Report a correction or provide model-specific evidence

Frequently asked questions

What does 4C mean on a Samsung dishwasher?

Dishwasher is not filling with water.

What usually causes Samsung error 4C?

Common causes include Closed tap; Kinked hose; Blocked inlet filter.

Can I safely fix 4C myself?

Some basic external checks may be safe to try first. Stop if there are leaks, burning smells, overheating, electrical issues, unusual noises or repeated failures.

When should I call a professional for 4C?

If standard user maintenance does not clear the error, or if you suspect an electrical component failure.

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