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replaced chromotherm heat only t-stat with a p200 white /rodgers. my old stat had 2 c, 1 w & 1 r terminals.
connected the w and r and left jumper as per the instructions. taped up the 2 c terminals not to use.
everything works except sliding the switch to off, does not shut the boiler and even though the desired temp is lower than the actual, the boiler still kick on.
did i do something wrong.?