>> I'm talking diagnostics, logic states, wiring diagrams.
In an odd coincidence the dryer I mentioned upthread started showing a reservoir full message. As it drains directly to the waste water that shouldn't happen. The sump was pretty much dry.
A bit of googling led me to a site called Home Owners Hub where there appears to have been an answer. Having extracted the pump unit while the pump itself was free the sensor was gummed up with lint.
A good clean and a mop out of the sump later it seems to be AOK again.
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