Microwave interior light turns on and fan runs, but the turntable does not rotate.

Safety first: Unplug the microwave before handling internal parts.

Step-by-step:

• Remove and clean components: Take out the glass tray and roller ring. Clean both and the cavity floor to remove food spills.
• Inspect coupler: Check the plastic turntable coupler for cracks or deformation. Replace if damaged.
• Test motor operation: With the tray removed, place a cup of water inside and run the microwave briefly. Look through the window to see if the coupler turns. If not, the turntable motor is likely faulty.
• Motor replacement (technician): Access the motor from the bottom panel (unplugged). Replace with a compatible Clatronic turntable motor.