Water supply error — washer not filling with water
The 4E error on the Samsung WF45R6100AW indicates water supply error — washer not filling with water. This typically occurs due to water supply valves not fully open. Most homeowners fix this in 15–30 min by following the steps below.
Common Causes of 4E
- 1Water supply valves not fully open
- 2Kinked or blocked water supply hose
- 3Clogged mesh filter at water inlet valve
- 4Low household water pressure
How to Fix 4E
- 1
Step 1
Unplug the washer from the wall outlet before doing anything else
- 2
Step 2
Check that both hot and cold water supply valves behind the washer are fully open
- 3
Step 3
Inspect both water supply hoses for kinks, bends, or visible damage
- 4
Step 4
Turn off the water valves and disconnect the hoses from the back of the washer
- 5
Step 5
Pull out the small mesh filters from the water inlet ports using needle-nose pliers
- 6
Step 6
Rinse the mesh filters under running water to remove sediment and debris
- 7
Step 7
Reinsert the filters, reconnect the hoses, and tighten securely
- 8
Step 8
Turn on the water valves, plug in the washer, and run a test cycle
Tools Needed
When to Call a Technician
Error persists after cleaning inlet filters and verifying water supply is fully open
Frequently Asked Questions
Common questions about Samsung 4E error
No. The 4E code means the washer cannot fill with water, so it will not start a cycle at all. You need to restore proper water flow first. The fix is usually simple — check that both supply valves are fully open and that the hoses are not kinked.
Turn off the water valves and disconnect the supply hoses from the back of the washer. You will see small mesh screens inside each inlet port. Pull them out gently with needle-nose pliers, rinse under running water until all sediment is gone, and push them back in. Samsung recommends doing this every 6 months, or sooner if your area has hard water.
No permanent damage, but running the washer repeatedly without water can strain the motor over time. Fix the water supply issue promptly rather than pressing Start again hoping it clears on its own.
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