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I'm sorry Bob. OK, on the original controller, there is a white wire, black wire and blue wire. The wires go from the original temp controller to the mercury contactors.
Based on markings on the old board and new board, I am fairly confident that I have connected the blue and black wires properly.
On the old board, the white wire is connected to the L2 terminal, one of the terminals on the transformer.
Problem is there is no corresponding L2 terminal on the new controller.
BTW, white is Neutral in the circuit.
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Tru6 Restoration & Design
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