Defrosted our schreiber app6403, however the red warning light will not go off and will not stop bleeping. This has been switched on for 14 hrs after defrost which I would have thought would have been adequate for it to reach temperature. The freezer is working, air flow at the bottom appears normal.

Should it need more than 14 hrs to reach temperature, or is this a PCB fault?

Alan marshall, December 2012