Interesting...they are having you install it in the opposite direction of the original? Not sure about you, but sounds wrong to me.
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FWIW, the majority of the issues with this board are either the potentiometer or sensor cable/wiring/connectors.

If the chip you installed is the same part number as the original board, and never installed backwards, I would have to assume it would work.

Ok, I have to ask this:

If the original chip and sensor are working...why are you messing with it?

Ahh, ok I did enough digging around to see what you did and what zaza was talking about. This chip in the pinbits link is the controller for auto adjustable sensor boards; these boards have a controller AND the sensor chip (TDA0161). You cannot replace the TDA0161 with another part as this part is discontinued without replacement. www.mouser.com/datasheet/2/389/stmicroelectronics_cd00000119-1204052.pdf

The best you can do is roll the dice and buy counterfeit chips from China if you really need one.

If this is not a proximity sensor chip as linked above, than this statement is simply not true.

EDIT: I'm going to toss Pinbits some credit here and say that it will likely work in any eddy sensor board that uses a WPC 04-11001 microcontroller; unfortunately, the A-18543-X boards do not use this part.
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