Planning to Aquamist my 4g63t

[Richard L]

806-157 is "normally closed".

no pressure = short circuit
pressure = open circult

The switch may need resetting. set the adjustment screw to the furthest out point with out loose it. the switch should be short circuited. If it is not, the switch is faulty. The 1s system has been discontinued three years ago. This switch is no longer available from us. There is an alternative switch from gemsensors. (google)