Product review (5 stars): Careful to get the right switch on the Subzero - ...
Careful to get the right switch on the Subzero - I have the 632. The left switch is for the light (on when door open) the right switch is for the fan (on when door closed). I put two of the same switches (for the light) in both places and the fan never operated, leading to inequal distribution of the cooling. Would have saved a $125 service call to put the correct switch back in the right side )