How to set Carrier Lock Out temp
I have a new Carrier heat pump/air conditioner and oil furnace as auxilary. My aux. heat is supposed to be set at 32, however it is not automatically switching over. However if I manually set the thermostat to Emergency heat the oil takes over and works as it should. I am looking for instructions to set the lockout temp on my thermostat. My installation instructions manual states the thermostat is locked so only the installer can make this change. Also I'm not sure what option to use between option 8(aux.heat lockout temp) or option 9 (heat pump lockout temp. balance point).
My thermostat manual is labeled as TP-PRH-A, NRH-A Performance Series Edge. And it is the programmable model A07049.