Appliance Spares
Quick answer: A LG washing machine pressure switch (water level switch) tells the board how much water is in the tub. The first sign of failure is usually this: the machine hums or clicks at the start but no water arrives, or a fill error shows. Replacement pressure switches for LG washing machines run about $20–40; a valve is a modest part and a thirty-minute job. Match the full model number on your LG sticker (66000FA1704X, BWL5, WF-T655TH, WF-T752A and more) against the listing title before you order.
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Fit check: the model number on your sticker must appear in the listing title — the badge on the front is not enough. All washing machine parts · Not listed? Send us the model number and we match it before you pay.
Last updated October 2026
What the pressure switch does on a LG washing machine
The pressure switch tells the board how much water is in the tub. On LG washing machines sold in Australia the same part is shared across model families, which is why one listing covers several model numbers, and why two pressure switches that look alike are not interchangeable: the mounting, the plug and the signal differ between families. The full model number on your sticker settles it.
Turn off both taps and pull the plug first. A valve change is low-voltage work behind a panel; if wiring looks burnt, stop and call a repairer.
Symptoms of a failed LG pressure switch
| What you see | What it usually means |
|---|---|
| The machine hums or clicks at the start but no water arrives, or a fill error shows | A solenoid has failed open-circuit, or the inlet filter is blocked |
| Water keeps trickling in with the machine off | The valve is not closing fully; grit on the seat |
| The detergent drawer fills on one side only, or soap is left behind | One coil of a twin or triple valve is dead |
| A drip or spray at the back of the machine behind the hoses | The valve body or a hose seat has cracked |
Is it really the pressure switch?
Check the free things first. Both taps fully open, the inlet hoses not kinked behind the machine, and the small mesh filters at the tap end of each hose rinsed clean. Low pressure from a half-open tap gives the same fill error as a dead valve. If water arrives but the machine still complains, it is more likely the pressure switch or the board than the valve.
Where is the model sticker on a LG washing machine
Inside the door rim, at about the 3 or 9 o’clock position with the door open. A duplicate sticker sits on the back panel. Write the full code down, letters and numbers, or photograph it: the suffix matters, and the badge on the front of the machine is not enough. Our LG model number guide has photos of each spot.
Which LG pressure switch is listed for your model
One row per model number as it appears on the sticker. The part column is the listing title, which names every model that listing covers. LG shares platforms with Euromaid, so some listings carry that name; the model numbers are what count.
66000FA1704X
BWL5
WF-T655TH
WF-T851
WF-T857
WF-T8582
WT-R107
WTG6530W
WTG8521
WVC5-1409WModel not in the table? Send us the full model number and we check the pressure switch against it before you pay.
Replacing the pressure switch: the job in order
- Turn off both taps, pull the plug and unscrew the inlet hoses at the back; have a towel ready.
- Remove the top panel (usually two or three screws at the back) and find the valve where the hoses enter.
- Photograph every plug and hose on the valve. Note which internal hose goes to which outlet.
- Release the hose clips and plugs, undo the one or two screws that hold the valve to the cabinet, and lift it out.
- Install the new valve, reinstall the internal hoses to the same outlets, plug in, and screw it down.
- Reconnect the inlet hoses, open the taps and check for drips before you reinstall the top panel. Run a short cycle and watch the fill.
DIY or a repairer?
For most people this is a DIY job: a valve is a modest part and a thirty-minute job. A repairer’s call-out in Australia is in the $100–165 band before the part, so the saving is the labour. Use a licensed repairer if the appliance is hard-wired, if you find burnt or melted wiring, if gas or sealed refrigerant is involved, or if the new part does not cure the fault, because the next suspect is usually the control board and that is fitted after diagnosis, not before.
Frequently asked questions
The machine will not fill but I can hear it trying. Is it definitely the valve?
Not yet. Turn the tap off, unscrew that hose at the machine end, point it into a bucket and open the tap: if the flow is weak, clean the hose filter or the tap is the problem. If the flow is strong, the hose goes back on and the valve is the next suspect. A valve that hums but passes no water has a blocked seat or a dead coil.
Is the valve the same across the range?
No. The number of outlets, the coil voltage, the hose sizes and the mounting differ. Match the full model number on your sticker against the listing title.
Do I need to turn the water off at the mains?
No, only at the two taps behind the machine. If a tap will not close, that is a plumber's job before anything else.
Why do valves fail?
Grit and scale on the seat stop them closing, and coils burn out with age. Rinse the hose filters once a year and most valves last the life of the machine.
Can I keep using the machine with one dead coil?
You can, but the detergent or softener will not be flushed through on that side. Install the valve.
How fast does a LG pressure switch arrive?
Parts in stock in Sydney are dispatched the day you order when it’s in by 12pm Sydney time, with $10.60 flat delivery Australia-wide and free delivery over $149. Most of Australia sees the part within a few business days.
Get the right pressure switch first time
Photograph the sticker, match the full model number against the listing title, and if anything is unclear send us the code. In stock in Sydney and dispatched the day you order when it’s in by 12pm Sydney time. Browse all washing machine parts or the brand shelves.
Disclaimer: this article is general information only and is provided without warranty of any kind. Appliance designs vary between models and production runs — always follow the manufacturer’s instructions, switch off and unplug the appliance before starting any work, and confirm parts against the model number on your appliance’s model sticker. Any repair is undertaken at your own risk and Oz Appliance Spares accepts no liability for injury, loss or damage arising from work performed after reading this guide, to the maximum extent permitted by law. If in doubt, use a qualified technician.
