Washer-dryer combo displays E8 during drying; clothes remain cold and damp

Safety first: Unplug the unit and allow it to cool completely before accessing the dryer section.

• Check basic airflow: Ensure the rear and sides of the Roborock combo are not blocked. For vented models, verify the exhaust duct is not crushed or clogged.
• Clean lint paths: Remove the lower front panel or rear panel (depending on model) and clean lint from the Roborock condenser, fan housing, and ducts.
• Inspect heater assembly: Locate the Roborock dryer heater housing. Check wiring connectors and look for burnt spots.
• Test heater and thermostats: With a multimeter, measure continuity across the heater element and thermal cutoffs. Replace any open components.
• If components test good: The main control board dryer relay or triac may be faulty. This repair is complex and usually requires a professional technician.