We installed a 1402 in our MH. It has a circ fan in the freezer, in the refg. and 3 on the back, all controlled by the fridge control board. It also auto defrosts every night at around 1:00am. We do dry camp in the summer and the freezer is 2 to 0 degrees and the refrigerator is 36 -37 degrees. This unit does use a lot of DC power, but between solar and the 2,000 watt generator, its all good. This has been bullet proof for us. The OP needs to come back to either give more information, or to let us know how it turned out.