Buzzing or rattling noise from the rear, especially when the compressor is running.

Safety: Unplug the appliance before removing the rear panel.

• Inspect condenser fan: Check that the fan blade is firmly attached to the motor shaft and not cracked.
• Tighten mounting screws: Secure the fan motor bracket and rear panel screws.
• Check condenser coil: Ensure the coil is not vibrating against the cabinet. Gently adjust its position if necessary.
• Replace fan motor: If the motor is noisy or has play in the shaft, install a new Grundig condenser fan motor.