Quote:
Originally Posted by dan-nickie
I wasn't worried about power draw, I was wondering about control wires for the heat pump.
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It depends, normally a.c. has 4 wires, if it's dometic the brisk air has 3 and the switching is done at the unit ciructt board, if anything you only adding a reverse valve wire, count the wires to your stat. Could have 4 wire ran or 6 wire ran.we know it is at least 4 wire. You have to check each manufactor. The stat Subbase could also do the switching in heat mode, it all depends on the unit and the stat.