Model 50JX 060 ---301 I believe to be about 2001. Heat Pumps are uncommon in Albuquerque, NM and I need some help. Original call found a bad indoor blower capacitor that was replaced but I was suspicious of the heat pump operation (assumed it was operating on heat strips). Had another call within a month, I found the defrost thermostat wires were shorted to the frame popping the LV circuit breaker. Also the reversing valve wires had been or were shorting. My guess was that all the shorts probably fried something, but after all my bypassing and LV testing, now it decided to work - maybe. I downloaded an excellent article from ZenHVAC and I contacted my distributor and the conventional wisdom is that the reversing valve is energized for cooling. This one seems to be the opposite! After all the crap above, my question is simple: should the reversing valve be energized in heat as I suspect or cooling as others suggest? Additionally I could not get the heat relays to function independently and wonder if there is delay built into these relays? They are unlike the heat sequencers I have worked with. I have the factory literature and wiring diagrams and am still unsure of the exact sequence of operation because there is none.