INDICATOR
Red light in the sensor flashes when user’s hands are within the sensor’s range.
CAUSE
Debris or scale in solenoid.
SOLUTION
Unsrew solenoid, pull out the plunger and the spring from solenoid and clean them. Use scale remover
material if needed. When replacing the plunger, please make sure that the spring is in vertical position.
INDICATOR
Red light in the sensor flashes when user’s hands are within the sensor’s range.
CAUSE
The central orifice in the diaphragm is plugged or the diaphragm is torn.
SOLUTION
Clean the orifice or replace diaphragm.
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TROUBLE SHOOTING