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  1. mrwojo

    Tekmar 356 has no display

    I have a outdoor wood boiler through a heat ex changer into my indoor NG boiler out to my radiant floors. My question is my Tekmar 356 has no display and nothing is working. could this be bad 24v xformer input or is it a bad controller? What can I do to test to ensure the controller is bad prior...
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