Washer-dryer combo stops mid-cycle and will not resume; lights may remain on but no progress.

Safety first: Unplug the unit before removing any panels. Avoid bypassing safety devices.

Step-by-step checks:

• Power reset: Unplug for 5–10 minutes, then restart a cycle.
• Observe where it stalls: Note if it always stops at the same stage (fill, wash, drain, spin, dry). Investigate the subsystem active at that point (e.g., drain pump if during drain).
• Check door lock and sensors: Ensure the door lock is solid and sensors (pressure, temperature) are connected and functioning.

When to replace: If all mechanical systems are working and the machine consistently stalls at the same point, the main control board may be defective and require replacement.