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    boutwellrj's Avatar
    boutwellrj Posts: 7, Reputation: 2
    New Member
    		  
    #1

    Nov 24, 2006, 06:45 AM
    York to Honeywell Thermostat
    I am having a problem when trying to change an existing York (4) wire manual themostat to a Honeywell (4) wire manual thermostat. The existing wires are RED,WHITE,YELLOW, and GREEN. This themostat works but temperature setting is not accurate and it is almost thirty years old. I am trying to replace with a New Honeywell manual with the same specs. Everything works but the oil burner. The fan on and the cooling works, but the heat does not come on. The R, W, Y ,G are the same as on the York. I reinstalled the old thermostatand back to normal. I know the Red (power) and Green(fan) are correct. Do I have to reverse or jump terminals to get this to work? Th installation guide says nothing about this and I am not about to just expeirment. Has antone run into similar problem?:confused:
    NorthernHeat's Avatar
    NorthernHeat Posts: 1,455, Reputation: 132
    Ultra Member
    		  
    #2

    Nov 24, 2006, 11:59 AM
    White is the wire that turns on the furnace and Y is for the A/c. It should work. Does it work if you jumper R-W? If so you must have a bad stat.
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