Fix 4E Error on Samsung WF45T6000AW

4E error — water supply issue

In this guide, I’ll walk you through fixing the 4E error — water supply issue on your Samsung WF45T6000AW (Front Load). With the right tools and parts, most homeowners can complete this repair in just 1–2 hours, saving themselves the expense of a service call.

🔨 Pro Tip from Dave

On the WF45T6000AW, the dual water inlet valve assembly (part DC62-30312H) has two solenoid ports. It’s common for people to replace only the clogged side — don’t make that mistake. Always replace the full assembly because if one side is failing, the other is likely to follow. Also, check the mesh screens inside the valve ports before assuming the valve itself is bad; a simple cleaning can save you the cost of the part entirely.

Part of our Top 20 Washing machine Models & Common Repair Issues Guide. Browse all washing machine repair guides for related models and issues.

Common Symptoms & Causes

When the Samsung WF45T6000AW encounters a water supply issue, you’ll likely see the following symptoms triggering the 4E error code:

The washer display shows the “4E” error code at the start of or during a wash cycle
The drum does not fill with water after the cycle begins
The washing machine pauses and beeps repeatedly without completing the fill phase
Water flow into the drum is noticeably slow or stops mid-fill

This error is most often caused by a kinked or closed water supply hose, clogged inlet valve screens, low household water pressure, or a worn-out water inlet valve.

Safety First

Unplug the washing machine from the power outlet before starting any repair — never work on a live appliance.
Shut off the water supply valve before disconnecting any water lines or hoses.
Wear work gloves when handling metal brackets, sheet metal edges, or sharp components.
Take photos with your phone before disconnecting any wiring harnesses or connectors.
Work in a well-lit area with enough floor space to lay removed panels flat.

Tools & Parts Needed

Essential Tools

Phillips #2 screwdriver
¼” nut driver
Torx T20 screwdriver
Multimeter
Bucket and towels

Replacement Parts

Water inlet valve
inlet hose screens (mesh filters)
inline water pressure gauge
Phillips screwdriver

Step-by-Step Repair Instructions

Step 1

First, check that both the hot and cold water supply valves on the wall behind the washer are fully open. Turn them counter-clockwise until they stop — a partially closed valve can restrict flow enough to trigger the 4E error, even if the machine and hoses are in perfect condition. Sometimes, valves that haven’t been turned in years can stick, so make sure each one is indeed open. If a valve is stiff or only partially opens, it’s best to replace it rather than forcing it, since old valves can fail in the half-open position.

Step 2

Next, inspect both inlet hoses for kinks, sharp bends, or soft spots. A kinked or collapsing hose can cut water flow just like a closed valve would, but without showing obvious damage. Straighten any kinks and run the washer to see if the error clears. If a hose feels spongy or has seen many years of service, it’s worth replacing it — internal rubber deterioration isn’t always visible from the outside. Remember to shut off the supply valves before disconnecting hoses to avoid a sudden release of pressurized water.

Step 3

Now, shut off the supply valves and disconnect both inlet hoses from the back of the washer, keeping towels handy for any residual water. Inspect the small mesh inlet screens inside the washer’s water inlet ports. These screens catch sediment from the supply lines and can gradually block flow, leading to a slow fill that triggers the 4E error. Carefully pry the screens out with needle-nose pliers, rinse them under running water, or scrub them lightly with an old toothbrush. Reinstall or replace them if they’re torn; damaged screens left out can allow debris to enter the inlet valve solenoids, leading to more costly failures later.

Step 4

Test your household water pressure at the washer’s supply connection using an inexpensive inline gauge. Samsung specifies a minimum of 14.5 PSI for the WF45T6000AW to fill correctly; anything below that can cause a slow fill that the machine interprets as a supply fault, coding it as 4E. Low pressure affecting only the laundry area may indicate a partially closed main shutoff or a pressure-reducing valve set too low. If the entire house has low pressure, it’s likely a plumbing issue. Pro tip: test the pressure when other fixtures are in use, as demand drops below the threshold can intermittently trigger the error.

Step 5

Before this step, make sure to unplug the washer — you’ll be probing electrical components. Pull the unit away from the wall, remove the four quarter-inch hex screws securing the rear access panel, and locate the water inlet valve assembly. Test each solenoid coil with a multimeter set to Rx1 by placing a probe on each terminal of the coil. A healthy coil should read between 120 and 500 ohms; an open reading (OL or infinite resistance) indicates that coil has failed, meaning the entire inlet valve assembly must be replaced, as individual coils aren’t sold separately. A coil reading near zero ohms is shorted and also non-functional, so it’s time to replace the valve in either case.

Step 6

Reattach both inlet hoses by hand until the fittings are fully seated, then snug them with a wrench — but only a quarter turn past hand-tight. Overtightening can crack the plastic inlet port fittings on the valve, creating leaks that might not be immediately obvious. Restore power, select Quick Wash, and start the cycle while staying close by to confirm the drum fills normally and the 4E error does not return. Pro tip: after the first fill cycle completes without error, check both hose connections at the wall and the washer for drips, as fittings sometimes need a final small adjustment after the first pressurization.

Where to Buy Replacement Parts

Samsung WF45T6000AW water inlet valve DC62-00214A
Samsung front load washer inlet hose screens cleaning
Samsung washer water supply pressure test gauge

When to Call a Professional

If the issue persists after following all the steps above, the problem might involve a failed main control board, a worn drive motor or bearing assembly, or wiring that requires specialized diagnostic equipment. In that case, it’s best to contact a licensed appliance technician — and don’t forget to shut off both the hot and cold supply valves before any work that opens the fill circuit.

How Much Does This Repair Cost?

Repair route	Typical cost
Do it yourself	$5–$50 (parts)
Professional repair	$150–$300 (parts and labor)

Costs vary by model, supplier, and local labor rates.

DIY repairs for a 4E error typically cost between $5–$50, covering parts like a new inlet valve or water supply hose. A professional service call for the same fix usually runs $150–$300 including labor. Tackling this repair yourself can save you over $100 while getting your Samsung WF45T6000AW back in action quickly.

Frequently Asked Questions

How do I reset the 4E error on my Samsung WF45T6000AW after fixing the water supply?

To reset the washer and clear the error code, press and hold the Start/Pause button for about five seconds. If the 4E error returns, it means the underlying water supply issue hasn’t been fully resolved.

Can a kinked inlet hose cause the 4E error on this front load washer?

Absolutely, a kinked or bent inlet hose restricts water flow enough to trigger the 4E error. Make sure to straighten the hose and check for tight bends behind the machine.

What water pressure does the Samsung WF45T6000AW require to function properly?

This model requires a minimum water pressure of 20 psi and a maximum of 116 psi. Low household water pressure is a common cause of the 4E error and should be checked at the supply valve.

The Water Inlet Valve That Usually Ends the 4E Error on This Model

If you’ve ruled out a kinked hose and cleaned the inlet screens but the 4E error continues, the water inlet valve itself has likely failed — it’s the part that will truly resolve the issue. From my experience, this valve fails more frequently on the WF45T6000AW than any other component in the water supply path.

What works

Direct OEM fit for this exact model — no guessing on compatibility or adapter hunting, and it bolts in without modification.
Replacement takes about 30 minutes once you pull the front panel, and the solenoid coil clicks audibly when power is applied, so you know immediately if the new one is actually working.
I’ve fitted this valve on these washers for friends and haven’t seen a repeat 4E error afterwards — it solves the problem cleanly.

What doesn’t

You’ll need to access the valve from inside the machine by removing the front panel — it’s not a five-minute swap, so budget time and make sure you have a Phillips screwdriver and a small socket set handy.
If water pressure into your home is unusually low (below 20 psi), the valve may not fully engage even when new — test your incoming pressure first with a gauge before ordering this part.

The most common mistake I see is homeowners ordering this valve without first checking whether the inlet screens are actually clogged or the hose is kinked. I’ve seen people call back saying they installed it and still had the error, only to discover a mineral-choked screen was the real culprit. Once you’ve eliminated those two, this Water inlet valve is your answer.

Post Views: 12

How to Fix 4E error — water supply issue on Samsung WF45T6000AW (Front Load)

4E error — water supply issue

Common Symptoms & Causes

Safety First