Our Blomberg Fridge Freezer (3DN1070) developed a nasty noise from the middle section.
By the time I had managed to investigate it further, the noise had stopped but cooling efficiency of both top units has been impaired, the freezer works perfectly.
The noise was traced to a fan in the middle fridge, the plastic had split allowing the fan to wobble, hence the noise, but finally drilling a larger hole allowing the motor to spin.
I have fixed the fan but am not sure as to which way round it should be mounted.
Should cold air be forced into the middle fridge or sucked out?