Most washing machine faults come down to five things: power, water in, water out, an unbalanced load, or a door that will not lock. Before you take a panel off or order a part, work through those five. They account for the large majority of machines that get written off as broken, and every one of them is free to check.
How a wash cycle actually works
Understanding the sequence makes diagnosis far easier, because a washing machine always fails at a specific stage — and the stage tells you where to look.
- Door locks
The interlock engages before anything else. If the machine cannot confirm the door is locked, nothing happens at all — no water, no drum movement.
- Machine fills
The inlet valve opens and the pressure sensor watches the water level rise. If the level does not reach target in the allotted time, the machine stops and reports a supply fault.
- Drum turns and heats
The motor tumbles the drum while the heater brings the water to the selected temperature. A heater fault usually shows up as very long cycles rather than a hard stop.
- Machine drains
The drain pump empties the tub. The pressure sensor confirms the water has gone. If it has not, the machine will not proceed — it will never spin a full drum.
- Machine spins
The drum ramps up to high speed. Before it does, the machine distributes the load. If it cannot balance it, it aborts the spin and either retries or stops.
So a machine that fills but never spins is almost never a motor problem — it is far more likely a drain or balance problem. That single insight saves a lot of wasted money.
Find your fault by symptom
| Symptom | Most likely cause | Full guide |
|---|---|---|
| Will not start at all | Power, door latch, or child lock | Washer will not start |
| Fills but will not spin | Water still in the drum, or an unbalanced load | Washer will not spin |
| Water left in the drum | Blocked pump filter or drain hose | Washer not draining |
| Will not fill with water | Tap closed, kinked hose, blocked inlet filter | Water supply fault (4C / 4E) |
| Shakes or walks across the floor | Transit bolts, levelling, or worn suspension | Washer shaking on spin |
| Clothes still soaking wet | Failed or aborted spin — see the spin guide | Washer will not spin |
| Loud grinding or rumbling | Foreign object, or worn drum bearings | See the noise section below |
| Leaking water | Door seal, hose connection, or pump filter cap | Check filter cap first — it is the most common |
The five checks that solve most faults
Whatever the symptom, start here. These take about fifteen minutes and cost nothing.
- Confirm real power at the socket
Plug something else into the same socket. A dead socket, tripped breaker or tripped RCD explains a completely lifeless machine — and it is quicker to rule out than to assume.
- Check the door is genuinely latched
Open and close it firmly. A door that looks shut but has not engaged the interlock will stop the cycle before it starts. Check the seal for a trapped sock holding the door fractionally open.
- Open both water taps fully
Then pull the machine forward and straighten the inlet hoses. A hose crushed against the wall restricts flow enough to trigger a fill timeout.
- Clean the drain pump filter
Behind the flap at the bottom front. Expect coins, hair grips and lint. This one job fixes a startling proportion of “broken” machines — and if the machine will not drain, it will not spin either.
- Redistribute the load and re-level the machine
Take out any single heavy item, spread the rest evenly, and check the machine does not rock. Push down on each corner in turn; if it moves, adjust the feet.
Unplug the machine for a full minute and plug it back in. Control boards latch faults and sometimes hold them after the underlying problem has gone. A reset costs nothing and occasionally clears a stubborn code outright.
What the noise is telling you
| Noise | When it happens | Likely cause |
|---|---|---|
| Grinding or scraping | During wash and spin | Foreign object in the outer drum, or a failing pump impeller |
| Rumbling that rises with speed | During spin only | Worn drum bearings — gets steadily worse, not better |
| Loud banging | Spin only | Unbalanced load, or transit bolts never removed |
| Humming with no movement | Drain phase | Pump obstructed |
| Squealing | Drum turning | Worn or slipping drive belt |
| Clicking | Start of cycle | Normal — that is the door interlock engaging |
A rumble that grows louder over weeks, plus play when you rock the drum by hand, points to worn bearings. On many modern machines the bearings sit in a sealed outer tub that cannot be split, so the repair means replacing the whole tub assembly. That is frequently more than the machine is worth.
Error codes: how to read them
Most manufacturers group their codes the same way, even though the letters differ:
- Water in — Samsung 4C/4E, LG IE, Bosch E16. Look at taps, hoses and inlet filters.
- Water out — Samsung 5C/5E, LG OE, Bosch E18. Look at the pump filter and drain hose.
- Balance — Samsung UE/UB, LG UE. Redistribute the load and level the machine.
- Door — Samsung DC, LG dE. Check the latch and the interlock.
- Motor — Samsung 3E, LG LE. Usually a genuine component fault.
One caution: codes are reassigned between model generations. A code that means one thing on a machine from 2014 can mean something different on the 2022 version of the same range. Always check the documentation for your specific model before buying a part on the strength of a code.
Repair or replace?
A rough but useful rule: if the repair costs more than half the price of an equivalent new machine, and the machine is past roughly seven or eight years old, replacement usually wins. Beyond the money, the parts most likely to fail at that age — bearings, the outer tub, the motor — are the expensive ones.
Cheap and worth doing at almost any age: pump filters, drain hoses, inlet valves, door seals, drive belts, carbon brushes, lid switches. Expensive and worth thinking hard about: bearings and tub assemblies, motors, control boards on premium models.
When to call a professional
Call an appliance engineer if the machine trips the breaker or RCD every time it runs, if you can see scorched or melted wiring, if water has reached electrical components, or if you have worked through the checks above and the fault is still there. Anything requiring the cabinet to be opened around live components is not a first DIY job.
Stop and call a qualified appliance technician or electrician if you find scorched or melted wiring, smell burning, see water that has reached electrical components, or if the fault returns immediately after a repair. Never bypass a safety device — thermal fuses, door interlocks and flood switches fail for a reason, and defeating one converts a broken appliance into a fire or flood risk.
