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    fastchevy's Avatar
    fastchevy Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Nov 28, 2009, 06:22 PM
    Honeywell th 221 b not turning on the heater
    I have 2 wires comeing out of the wall one is white and one is red I hook them up but the boiler doesn't turn on
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Nov 29, 2009, 02:27 AM
    Hook one to R or RH and the other to W. If that does not work then hook the two wires directly together and see if it runs. If it does then there is a problem with the thermostat
    KC13's Avatar
    KC13 Posts: 2,556, Reputation: 99
    Ultra Member
    		  
    #3

    Nov 29, 2009, 07:13 AM

    If you can post a few pics of the boiler, it would help in determining what you have & probable culprits.
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