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    jnrlln's Avatar
    jnrlln Posts: 5, Reputation: 1
    New Member
    		  
    #1

    Oct 28, 2008, 10:51 AM
    Heater won't start on automatic
    Hello I install a new thermostate and now my heater won't star on automatic only on {ON} and if I turn it off and leave it on {ON]still running and swich to auto then turn off I don't know what to do if you can help me letme know,my heat is electric and central heat and ac my ac works fine on auto but my heat won't
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Oct 28, 2008, 10:53 AM
    Old brand and model of thermostat ?

    New brand and model number of thermostat?

    Exact model numbers for both thermostats please!
    jnrlln's Avatar
    jnrlln Posts: 5, Reputation: 1
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    #3

    Oct 28, 2008, 11:10 AM

    I don't know the old model but the new model its a honeywell ct31 I think the old model it's the same come from manufacture because this is 1990 mobil home
    jnrlln's Avatar
    jnrlln Posts: 5, Reputation: 1
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    #4

    Oct 28, 2008, 11:31 AM

    I can't remember the old one but the new one is heneywell ct31 I think the old one comes with my mobil home 1990
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #5

    Oct 28, 2008, 11:31 AM
    Auto what??

    Are you talking about the blower that blows air out of the furnace?

    How many wires go to the thermostat?
    jnrlln's Avatar
    jnrlln Posts: 5, Reputation: 1
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    #6

    Oct 28, 2008, 11:45 AM

    I can't remember the old one but the new one is heneywell ct31 I think the old one comes with my mobil home 1990
    jnrlln's Avatar
    jnrlln Posts: 5, Reputation: 1
    New Member
    		  
    #7

    Oct 28, 2008, 11:59 AM

    Its got 4 wires red,green,yellow,and white
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
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    #8

    Oct 28, 2008, 12:11 PM
    Is this an electric furnace?
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