Laing DDC pump repair PCB mod

[xcooling]

Tested and NOT working:

wiring the coils as the diagram indicates
reversing the wires of individual coils.
wiring the coils in pairs as they are stock.
wiring opposite coils with each other
wiring every 2nd coils
wiring 2 coils together

I have also tested inverting the board

You will need to add a resistor (50K) or a 100K pot and cut the bridge on the pcb between VSP and Vref (otherwise u will melt the ic)