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

    Nov 2, 2010, 07:57 AM
    Determining thermostat wires in an apartment
    I've made a big mistake and need some advice!

    For some unknown reason, I thought it would be a good idea to remove my old thermostat without marking the wires, before trying to install the new one. Now I'm lost!

    I live in a condominium high rise with a gas forced air furnace that I can't access. Once the thermostat wires go into my wall, there is no way I can trace them.

    Is there a way I can figure out which wire is which? (I'm on a 9-wire set-up), or do I need to call a professional?

    Sandra
    smoothy's Avatar
    smoothy Posts: 25,490, Reputation: 2853
    Uber Member
    		  
    #2

    Nov 2, 2010, 08:09 AM

    Call a pro. With 9 wires you have to know for a fact they actually followed a standard color code when it was installed. Where is this furnace actually located, someone has to be able to acess it for routine servicing.
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