Interesting setup on an Aaon RN air to air heat pump. The SCR modulating auxilary electric heat is a neat feature. Of course it would not be an Aaon startup without finding something messed up on the wiring. To those new to commissioning, ensure that checking all wiring for tightness and integrity is part of what you do before even turning the power onto the unit if possible.

Posted by The_hvac_doctor at 2021-04-01 21:56:01 UTC