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Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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I have a Honeywell PC8900. I have to replace it. I brought a

Customer Question

I have a Honeywell PC8900. I have to replace it. I brought a Honeywell RTH2410. How do I convert wires from the numbers 1, 2,3,4 to letters. 1 - red wire, 2 - black, 3 - yellow, 4 - green
Submitted: 1 year ago.
Category: HVAC
Expert:  Daniel Plourde replied 1 year ago.

hi i am dan i can help you with this. first that is a communicating thermostat you can not convert those numbers to letters. in order to replace just the thermostat you need to replace the same exact thermostat or another one compatible with you controller.