Well hooked up jumper wire, turned down system on and heat pump line(big one) was getting hotter, went upstairs into air handler line was getting hot checked air temp coming out of vent cold..
Turned on the upstairs system that still has the OLD thermostat..no orange wire but the zone control has LEDS that signal you what is on.Led 5: W2/EM( is emergency heat/ aux heat) Led 7 states : w1/ rev valve ( indicates its in first stage heating) Turned on to heat fans came one led 7 was on, line from heat pump was heating up, cold air was coming of of upstairs vent waited a few mins cause i know that system works. after a few mins air was getting hot checked the zone control and led 5&7 where on, was using secondary heat and was stating it was using primary heat also..
now I'm really confused, the heat pump is working but no hot air is coming out the air handler for the downstairs system. the upstairs system with heat pump on no hot air until it goes into secondary heat. isn't aux/secondary heat for extreme temps when the heat pump just can't handle the load outside temp below 45 deg or around there?
Todays temp was 75 deg, i tested system going up to 85 degs,