My daughter has the Westinghouse RJ393V-R*5 and the fridge keeps stopping when ever it feels like it. We bought it 2nd hand so we don't have a manual. A repair guy came and quoted a repair of $300 to build a compartment around the motor as he said the freezer is freezing the motor. Could this be right?? Ive never anything like it before??? Can somebody advise me what to do.