Washer-dryer does not heat water during wash, clothes come out cold, E5 displayed on Xiaomi combo washer-dryer.

Safety first: Unplug the appliance before accessing internal components. Heating circuits carry mains voltage.

• 1. Confirm settings: Ensure you selected a program with heating and that the temperature is not set to cold/ambient.
• 2. Check for mixed hot/cold supply issues: If your Xiaomi model uses only cold water and heats internally, skip this step. For models with hot and cold inlets, verify correct hose connections and that hot water is available at the tap.
• 3. Access heater (advanced): On many Xiaomi combos, the wash heater is mounted at the bottom rear of the tub. Remove the rear panel, locate the heater terminals and NTC sensor.
• 4. Test heater resistance: With a multimeter and power disconnected, measure resistance across the heater terminals. An open circuit indicates a failed heater that must be replaced.
• 5. Inspect wiring and NTC: Check the temperature sensor (NTC) seated in the heater bracket or tub for secure connection and no visible damage. A faulty NTC can also trigger E5.
• 6. If unsure: Because heater replacement involves seals and high-voltage wiring, consider using a professional technician to replace the Xiaomi wash heater assembly or diagnose the control board.