Washer-dryer combo displays E20; drying cycle may not start or may stop quickly.

Safety first: Unplug the appliance and allow it to cool before servicing the condenser system.

• Clean condenser: If the unit has a removable condenser, open the access panel, remove the condenser, and rinse thoroughly under running water to remove lint and scale. Let it drain and reinstall.
• Check condenser water supply: Some Haier combos use a water spray to cool the condenser. Inspect the small hoses and spray nozzle for blockages. Clear mineral deposits with a descaling solution if needed.
• Inspect condenser pump (if present): Access the small pump that circulates water through the condenser. Check for blockages and test for operation. Replace if not running.
• Run a test dry: After cleaning, run a short drying cycle and monitor for proper operation and absence of E20.
• Call a technician: Persistent E20 may indicate a sensor or PCB fault in the drying system that requires professional diagnosis.