Problem summary
Your Samsung WW90 is filling with water or leaking when the machine is switched off and idle. You may notice clear water collecting inside the drum or pooling beneath the machine. This typically means water is entering the tub or draining out when it shouldn't be.
Likely causes
Based on 174 similar faults we've attended, the most common causes are:
Door seal (26% of cases) – The rubber gasket that seals the door degrades over time, especially in hard-water areas. A worn or damaged seal lets water weep in, or prevents proper drainage.
Inlet hose (12% of cases) – The hose supplying water to the machine may have a crack, split, or loose connection at the tap end or machine end. Even a small leak can cause water to drip in when pressure is on the line.
Drain hose (less common) – A kinked, cracked, or misaligned drain hose can siphon water back into the tub when the machine sits idle.
Pump or valve blockage – Lint, detergent residue, or debris can prevent the pump from closing fully, allowing water to trickle back in.
What you can try yourself (DIY)
If you're confident with basic checks, these steps may identify the fault:
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Inspect the door seal – Open the door and run your finger around the rubber gasket. Look for cracks, hardening, mould, or debris trapped in the groove. A visibly damaged seal is the most likely culprit.
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Check both hoses – Turn off the water tap supplying the machine. Feel along the inlet hose (usually connected at the back, top-left) for cracks or soft spots. Look at both ends for loose or corroded connections. Inspect the drain hose for kinks or cracks.
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Look under the machine – Is the leak coming from underneath, or from inside the drum? Water inside the drum points to the door seal or inlet. Water beneath points to a hose or pump.
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Test the door latch – Close the door firmly and check it catches properly. A door that doesn't seal fully won't engage the interlock, and water can seep in.
If you find a visibly cracked hose or a badly degraded seal, these are wear parts you can often replace yourself using the service manual. However, if the pump or internal valves are faulty, or if you're unsure, call a qualified engineer.
If you're in Northern Ireland, SMC Services can usually book a repair within 2-3 working days.
When to call SMC Services
Contact us if: you've checked the hoses and door seal and found no obvious damage; water continues to collect despite your checks; you're not comfortable opening the machine; or you suspect a fault inside the pump or inlet valve. We'll diagnose the exact cause and replace any faulty parts.