Question about Heating & Cooling
Hello,The transformer (breaks) if the secondary is shorted for any reason.Also a power surge to the house/building will kill it (lighting strike/car hitting telephone pole).It might cause damage to the board.It is cheaper to try a new transformer BUT add a inline 3 amp fuse in the secondary so that will be the last transformer you have to replace(just fuses)if the short is hard to find.Power up the old board & see if it works,unless there is obvious damage.The plug sometimes comes with a new board because there is a wiring change to install it(on some) replacement boards.
Posted on Oct 07, 2010
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Posted on Jan 02, 2017
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