lostinspace1
Dec 31, 2008, 06:16 PM
I have a five wire system. I have a green, red, white, yellow, and blue. This is an electric heater attached to the air handler and a separate air conditioning system. THis system was controlled by a Lennox mercury thermostat. Could you tell me what each color wire does? Example: Yellow controls the outside unit. I am trying to switch this system to a programmable, digital thermostat.
Have tried two Hunter programmable thermostats without success... the air conditioner and heater are running at the same time.
I removed the yellow wire to cut off the air conditioner, the heat is working okay.
Please advise.
Have tried two Hunter programmable thermostats without success... the air conditioner and heater are running at the same time.
I removed the yellow wire to cut off the air conditioner, the heat is working okay.
Please advise.