How to Replace the Water Inlet Valve on a Samsung WA45T3400AW Washer — Step-by-Step Instructions
Step-by-step instructions for the Samsung WA45T3400AW (top-load washer, 4.5 cu ft). Parts and access points can differ slightly by production year — the steps below cover the common layout for this platform, and the model notes flag its quirks.
Unplug the washer AND shut both water taps before touching anything. Check the new valve’s part number against your model tag — hot/cold ports must match.
Tools
- Nut driver or socket set
- Pliers
- Towels
- Phone camera (wiring photos)
Parts
- Inlet valve assembly matched to your model number
Step by step
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1 Shut water and power
Close both supply taps behind the washer, unplug the machine, and pull it forward for working room.
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2 Disconnect the fill hoses
Unscrew both hoses from the back of the washer with towels ready — they hold water. Inspect the little screens in the valve ports: if they’re packed with sediment, cleaning them may fix your fill problem for free. Try that before replacing anything.
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3 Open the rear or top panel
The valve sits directly behind the hose connections, usually under a small rear panel or the main top panel — a few screws.
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4 Photograph and transfer connections
Take a photo of the wiring, then move each wire terminal and internal hose clamp from old valve to new one at a time so nothing swaps.
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5 Mount, reconnect, and leak-test
Screw the new valve in, reattach fill hoses, open the taps slowly and watch the connections for a minute, then run a fill test before pushing the washer back.
Samsung WA45T3400AW notes & error codes
In hard-water areas the inlet screens on these scale up within a few years and produce a slow-fill complaint that reads like a failing valve. Pull and clean the screens before condemning the valve — it is often the entire repair.
| Code | What it means |
|---|---|
| 5E | Not draining |
| 4C | Water supply fault |
| UB | Unbalanced load |
| dC | Lid open during operation |
| 3C | Motor or hall sensor fault |
Full details for this machine — common problems, causes, and costs — are in the Samsung WA45T3400AW repair guide. The general version of these instructions is here.
If the washer overfills even when unplugged, replace the valve urgently — and if fills are still wrong after a new valve, the problem is the pressure sensor or control, which is meter-and-diagnose territory. If you'd rather skip it entirely, find a washer repair pro near you →
What this repair costs professionally
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