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Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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I am trying to install a p330-0220 thermastate on a heat pump

Customer Question

I am trying to install a p330-0220 thermastate on a heat pump system that was probably wire wrong when it was installed 10 years ago. How many wires should I have and how can I verify that the colors are what they should be? Right now all I am getting is heat, I can't get the AC to work.
Submitted: 2 years ago.
Category: HVAC
Expert:  airheatman replied 2 years ago.
Hello. My name is ***** ***** I'll do my best to help. Let's get started and see what we can do.If you can look in air handler and tell me what wires from thermostat connect to what in air handler and what terminals new thermostat has, I can guide you through proper wiring.