EWC Controls Forum

Update: Great HVAC vendor swapped out ASZ16 - non-communicating condenser and replaced with a 2-stage ASZC16 communicating condenser (which requires a 24v transformer to power control module that DOES NOT SHIP with the unit). We now have a AMVN97 muti-stage furnace, ASZC16 heat pump condenser ...

I have a UT3000 with 2 UTC dampers and 2 CTK04 thermostats controlling a communicating AMVM97 modulating furnace and non-communicating ASZ16 single stage heat pump. Furnace is working great, however when the contractor went to configure the heat pump he could not change the settings on UT3000 to ...