Heat Pump problems
We have a Duo-Therm 60515 heat pump (13,500 BTU) that recently went out of commission on our mh and are evaluating our options. We have a 2007 Newmar with dual heat pumps on the roof plus a furnace b...
Forum Discussion
1. DID you cap OFF the yellow wire??????? You MUST cap that wire OFF per the instructions. IF you connected that Yellow wire, that will cause problems. The yellow wire on the 5 button boards is the REVERSING signal wire. On the 12 button Boards, it is the Medium Fan speed wire. The 5 Button HP's only had 2 fan speeds. Hi and Low. The 12 button's have Low-med-Hi. But, the Yellow wire is NOT used on the Coversion kit wiring. The Reversing solenoid wires are seperate and that is why you connect to T4 on the board and the other wire to the generic White Neutral harness. I have done about 10 of these and have NEVER had a problem. Doug
