Litter Robot LR-3 Flashing Blue light

Litter Robot LR-3

I have replaced the DFI boards and the pressure switch. The pressure switch has 2 wires going to it. There is a Black wire and a Blue one. Is there a polarity match required? The plug fits the switch pigtail either way. No polarity.

The wire harness for the DFI boards plugs into the left back of the control panel. It is polarized and only plugs into the circuit board one way.

The Pinch Detect has been cleaned, reinstalled, and operation verified per video instructions.

After all these repairs, I am still getting a flashing blue light. Would you recommend replacing the circuit board at this point?

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