Washer-dryer shows E28; imbalance detection error during spin

Safety first: Unplug the appliance. Avoid running high-speed spin with severe vibration.

Step-by-step checks:

• Check load distribution: Ensure laundry is evenly distributed in the drum and not tangled into a single mass. Run a spin with a balanced load.
• Inspect shock absorbers: Remove rear or front panel to access the drum shock absorbers. Check for oil leakage, weak damping, or broken mounts. Replace in pairs if worn.
• Check counterweights: Inspect concrete or cast-iron counterweights on the tub for cracks or loose bolts. Tighten or replace as needed.
• Unbalance sensor: Some models use a vibration sensor. Verify its mounting and wiring. Replace the unbalance sensor if faulty.