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    coryhynes's Avatar
    coryhynes Posts: 6, Reputation: 1
    New Member
    		  
    #1

    Jun 7, 2008, 07:52 AM
    Noma Thermostat Wiring
    I have a Noma Thermostat 52-2558-8. My heat works fine but it will not start my AC outside.
    I switched back to the manual style and it works fine.
    I have 5 wires coming out of my wall. Blue, Green, Yellow, White, and Red. My question is. Before I added this new programmable thermo I had a manual one, but the blue wire was not in use. Therefore, I decided not to connect it again to the new one using the 4-wire heating/cooling diagram. Can anyone tell me if I need this blue wire connected to control the cooling properly?

    Any suggestions.
    Thanks
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Jun 7, 2008, 09:02 AM
    Get a good quality thermostat . Honeywell or White Rodgers
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