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I HAVE A GOODMAN HEATER MODEL 3 gmp100-4 rev b. the thermostat is digital and want light up I HAVE CHECKED THE THERMOSTAT AND IT IS GOOD I HAVE REPLACED THE TRANSFORMER ITS GOOD AND TERMOSTAT STILL WANT LIGHT UP . WHAT DO I CHECK NEXT ?

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  • Perry Putnam
    Perry Putnam May 11, 2010

    Do you have 24 volts at the t-stat?

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  • 52 Answers

Could be broken wire in wall

Posted on Aug 29, 2009

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