It helps manage motor operation and is intended for use as a direct service replacement when the original board fails or becomes unresponsive
Clean filter housing thoroughly
Warranty and support This part is covered by the original equipment manufacturer limited warranty against manufacturing defects
It is not a drop in replacement for auxiliary pumps identified as pump 2
Rinse with fresh water if residue forms and allow it to dry before reinstalling
Harwil HRQ12D Flow Switch 1/2" Mpt Long Stem Pilot Duty SPNO Washer It helps manage motor operationHarwil HRQ12D Flow Switch 1 2" MPT Long Stem, Pilot Duty SPNO Reliable Flow Detection Ensures accurate water flow monitoring, protecting pumps, heaters, and critical hydronic equipment in pools, spas, water heaters, and boilers. 1 2" MPT Long Stem Design Male pipe thread for direct inline installation; extended stem for deeper pipe runs and retrofit needs. Durable & Versatile Built for continuous operation in wet environments. Suitable for commercial