Can't help with the circuit... but think you need to follow the tracks from the sensors to the micro... find the pin that is toggled, and put an opposite sign on it and see what happens. It may go to quad compactor first , who knows, but eventually goes to the micro.
Failing that... you have transformer and fets and 002 board.... it will work one way or another.
Just had a little 24v 5kw pj come back from the north of the island..... water and control card don't mix apparently, so eg8010 to the rescue!.... gee they have changed my world.... never scared anymore.... if there is a box and transformer, the rest is a soda.