Washer-dryer combo displays E18; motor does not run or runs erratically.

Safety first: Unplug the unit before accessing the motor or wiring.

• Access motor and sensor: Remove the rear panel. The hall sensor is typically mounted on the motor stator with a small connector.
• Inspect connections: Check that the hall sensor plug is fully seated and that wires are not damaged or pulled.
• Test sensor: Using a multimeter, measure sensor resistance according to Haier service data. Some sensors can also be tested by monitoring output voltage while manually turning the motor shaft.
• Replace hall sensor if faulty: If readings are out of spec or intermittent, replace the hall sensor with a Haier-compatible part.
• Call a technician: If a new sensor and good wiring do not resolve E18, the main PCB speed sensing circuit may be defective and should be professionally diagnosed.