Microwave shows E9 and will not start

Safety: Unplug the microwave before accessing the bottom panel.

• Check for jams: Remove the glass tray and roller ring. Clean any spilled food or debris from the cavity floor. Inspect the roller ring for cracks or flat spots.
• Inspect coupler: Check the plastic turntable coupler that fits over the motor shaft. Ensure it is not cracked or stripped.
• Test without load: With the tray and ring removed, run a short cook cycle and look through the window to see if the coupler turns. If it does not move, stop the cycle and unplug the unit.
• Access motor (advanced): On many Haier models, the turntable motor is mounted under the cavity floor and accessible from the bottom. Remove the bottom cover (if separate) and inspect the motor and wiring.
• Replace motor: If the motor is burned, seized, or tests open with a meter, replace it with the correct Haier turntable motor.