Sensors
I understand why the black tank sensors get fouled but cannot understand how the shower and the kitchen sink tank sensors get fouled as soap is supposed to clean things so what is the cause?
Forum Discussion
the sensors (well the cheap factory ones) activate the light when there is a lower resistance to ground. normally water provides the low resistance path. But so does soap scum, grease, food etc. The sensor circuit looks for an open circuit (infinite resistance) or a resistance in the 10's of kohms. doesn't take much scum or junk on the end of the sensor tip to meet the lower resistance threshold.
