after adding some gas in the unit the freezer (no frost) started to fill and frost normally but the fan is not working i unclamped the fan and gave it direct power and it worked fined. I called the manufacturer and they were very helpful NOT! asked about the problem and was given many answers but not what to check for. Now this freezer compartmen works at a temp at -7C but after a few hours the temp goes normal at -18c and back again to a normal-7c. the door has a magnet sensor for the fan i assume tried to put a magnet on it but nothing. Any suggestions would be greatly apriciated.