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I installed hz311 truzone but the fan wont turn on on heat even when i put it on auto or on. but it works fine when i put it on cool. also notice it shows it calling on heat on the zones but the fan wont turn on

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The main PCB board is defective

Posted on May 10, 2009

  • WTFWentWrong May 08, 2012

    I have the same problem.. Does that me mean the PCB of the HZ311 is bad? Thanks for your help..

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