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Samsung WW90 washing machine won't spin – diagnosis

SAMSUNG WW90 range · freestanding washing machine · based on 39 similar repairs

Diagnosed by Sean McCauley · SMC Services · Last verified 10 May 2026

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Likely causes (Samsung freestanding washing machine):

Problem summary

Your Samsung WW90 washing machine has stopped spinning, and you may notice a smell of smoke or burning coming from the appliance. This is a safety concern and requires prompt attention.

Likely causes

Based on 36 similar faults we've repaired, the spin fault usually stems from one of three areas:

Control board (PCB) – about 36% of cases involve the printed circuit board that controls the motor and spin cycle. Electrical faults here may cause the spin function to cut out entirely. A burnt smell often indicates thermal damage to the board.

Pump blockage or failure – about 19% of cases involve the drain pump. If the pump cannot empty water properly, the machine will not spin as a safety measure. A blockage (lint, foreign objects, detergent residue) is common; sometimes the pump motor itself fails.

Door seal degradation – about 17% of cases involve the rubber door seal. If the seal leaks during the wash cycle, water may escape and trigger a fault code or safety shutdown that prevents spinning.

Why this needs an engineer

The components involved in a spin fault — the control board, pump, motor connections, and sealed door assembly — all require specialist diagnosis and repair. The smell of smoke is particularly important: it suggests electrical burn-out or motor overheating, which presents a safety risk and must not be ignored.

Do not attempt to: - Open the appliance or access internal components yourself. - Run the machine again until it has been inspected. - Disassemble the door seal or pump without proper training.

Attempting DIY repairs on these parts risks electrical shock, water damage, or further component failure.

Warning signs that need immediate professional attention

When to call SMC Services

If your WW90 won't spin—especially with a burning smell—book a qualified engineer visit as soon as possible. A technician will test the control board, pump, and door seal to identify the root cause, and advise you on repair costs before proceeding.

If you're in Northern Ireland, SMC Services can usually book a repair within 2–3 working days.

Step by step

  1. Stop using the appliance. Do not run another cycle. If you notice a smell of smoke or burning, switch off the machine at the wall socket immediately and allow it to cool.
  2. Check for visible water or debris. Look underneath the appliance and around the door seal for water leaks or debris. Do not open the door if water is actively leaking. Note what you see to tell the engineer.
  3. Consult your manual for emergency drain. Some WW90 models have a manual drain hose or emergency release catch. If your manual describes this, you may be able to drain standing water before the engineer arrives—but do not force any components.
  4. Book a qualified engineer. Contact SMC Services or another qualified washing machine engineer. Provide details of the fault (won't spin, smell, any error codes) so they can prioritise your visit and bring the right parts.

Frequently asked questions

Is it safe to run the machine again if I notice a smell of smoke?
No. Stop using the appliance immediately. A burning smell indicates electrical or thermal damage inside. Running it again could worsen the fault or create a safety hazard. Wait for an engineer's diagnosis.
Could a blocked drain cause the spin to fail?
Yes, it's one of the common causes. If the pump cannot drain water, the machine will not spin. Lint traps, foreign objects, or detergent buildup can block the pump. An engineer can clear and test the pump safely.
How long does a spin fault repair usually take?
That depends on the root cause. A pump replacement or seal change typically takes 1–2 hours. Control board replacement may take longer. The engineer will give you a time estimate after diagnosis.
What if the door won't open after the machine stops?
Some models have an emergency release catch inside the appliance or a manual drain option. Consult your manual or call an engineer; do not force the door open, as this can damage the seal and locking mechanism.
Will my clothes be damaged if they stay wet inside the drum?
Leaving wet clothes for extended periods increases the risk of mildew and odour. An engineer can drain the drum safely and remove your laundry. The sooner you book a repair, the better.

Get this fixed

The parts most often needed for this repair — order direct:

Fits your WW90 Samsung Main Pcb (DC92-01640G) £99.23 SMC05912 View part → Fits your WW90 Samsung Main Pcb (DC92-01768D) £86.82 SMC10912 View part → Samsung Assy Sub Pcb (DC92-00599A) £91.33 SMC02412 View part → Samsung Assy Pcb Sub (DC92-00773G) £88.38 SMC02416 View part →
Browse all spares

Prefer a pro? A local appliance engineer can carry out this repair. SMC's own repair service covers Northern Ireland only. The parts above ship UK-wide.

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About the data on this page

This page draws on 39 similar repairs from across 29 years of SMC Services records — over 116,000+ appliance repairs in total since 1997. The likely-cause percentages above are computed directly from the engineer reports we filed for this brand and fault, and we update them as new repairs come in.

SMC Services Ltd · Registered in Northern Ireland, Co. NI628091 · Domestic & Commercial Appliance Repairs.