Problem summary
Your Samsung WW80 washing machine is stopping partway through a wash cycle, often with the display flashing on and off. This pattern typically points to an electrical or mechanical fault that prevents the machine completing its programme.
Likely causes
Based on 60 similar faults we've seen, three main components are most commonly at fault:
PCB (control board) – This is responsible for sequencing every step of the wash cycle. If the PCB develops a fault, it may cut power unexpectedly or lose its connection to the motor or pump, causing the machine to stop. This accounts for around 60% of reported cases.
Motor – The motor drives the drum rotation. A failing motor can draw excessive current, triggering a thermal cutout that stops the machine. This appears in roughly 35% of cases. You may notice the drum doesn't spin, or spins weakly, before it stops completely.
Pump – The drain pump removes water during the wash cycle. If it fails or becomes blocked, the machine may stop when it tries to drain or refill. This is less common (about 7% of cases) but still possible.
Flashing displays often accompany electrical faults and are the machine's way of signalling a fault code—even if you can't read it clearly.
Why this needs an engineer
All three likely causes involve either sealed refrigeration components, mains-voltage circuits, or components that are mechanically complex and risk water damage if disturbed. Testing which component has failed requires specialist equipment and safe isolation of mains power.
Attempting to replace the PCB, motor, or pump without proper diagnosis can waste money and create safety hazards.
Warning signs that need immediate professional attention
- The machine stops, and the display flashes repeatedly or shows an error code
- Stopping happens at the same point in the cycle each time
- You hear unusual noises (grinding, squealing) before it stops
- Water is leaking around the drum or from underneath
- The drum does not turn at all, or turns very slowly
When to call SMC Services
Contact us as soon as you see this pattern. The longer a faulty PCB or motor runs, the greater the risk of secondary damage (for example, water pooling in the tub or electrical burnout). We can diagnose which component is at fault and replace it with a genuine or quality equivalent part.
If you're in Northern Ireland, SMC Services can usually book a repair within 2-3 working days.