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Why Does My Samsung Washing Machine Fill With Water When Not in Use?

Published in Appliance Repair 3 mins read

If your Samsung washing machine basket is filling with water even when it's turned off and not running a cycle, the most common reason is a problem with the water inlet valve.

The Primary Culprit: The Water Inlet Valve

Washing machines use electric water inlet valves to control the flow of hot and cold water into the drum during different stages of a wash cycle. These valves are designed to open when energized and close completely when power is removed, effectively sealing off the water supply.

According to expert insights, "When you see MORE water in basket - and it's not in a cycle - that means water is slowly entering washer through the valve because it is not closing all the way to seal water out." This perfectly describes the situation where water accumulates in the machine when it's idle.

Why the Valve Fails to Seal

A water inlet valve can fail to close completely for several reasons:

  • Wear and Tear: Over time, the internal components (like diaphragms or seals) can wear out or become brittle.
  • Sediment Buildup: Mineral deposits or sediment from your water supply can get lodged in the valve, preventing it from seating properly.
  • Electrical Fault: Although less common for slow filling, a minor electrical issue could potentially prevent full closure, though typically a valve either works or doesn't in terms of full electrical open/close. The slow leak points more strongly to a physical obstruction or seal failure.

What This Means

A valve that doesn't seal properly allows water to trickle into the machine continuously or intermittently, leading to:

  • Unexplained water accumulation in the drum.
  • Potential water waste.
  • Risk of overflow if left unchecked for a long period, depending on the severity of the leak and drain height.

The Solution

The standard fix for a washing machine filling with water when not in use due to a faulty inlet valve is to replace the defective water inlet valve assembly. This is a common repair, but it requires accessing the back or top of the machine and working with water and electrical connections, so it may require professional service if you are not comfortable performing appliance repairs.

Replacing the valve ensures that the water supply is properly cut off when the machine is not actively calling for water.

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