Replace for Hayward FDXLWPS1930 Water Pressure Switch for Hayward Universal H

Water Pressure Switch for Hayward Universal H

This replacement water pressure switch restores accurate pressure sensing on Hayward Universal H pool and spa heaters, matching OEM cross-reference FDXLWPS1930.

Overview

The water pressure switch for Hayward Universal H heaters monitors flow through the heat exchanger and signals the control board to fire the burner only when water movement is confirmed. Built as a direct replacement for OEM part FDXLWPS1930, this water pressure switch for Hayward Universal H units keeps safety shutdowns working as designed. It suits pool owners and service technicians replacing a failed or stuck switch.

Built For Performance

• Direct replacement for OEM cross-reference FDXLWPS1930
• Normally open contact design closes on rising water pressure
• Threaded connection for straightforward installation
• Sealed housing resists moisture in outdoor equipment pads
• Compatible with Hayward Universal H series heaters

On-The-Job Use

• Restoring burner operation after a pressure switch fault code
• Routine service on residential pool and spa heater systems
• Replacing a switch that fails to close with adequate flow
• Keeping low-flow safety protection active on Hayward Universal H heaters

Specs At A Glance

Good To Know

Q: How do I know the pressure switch has failed? A: Common signs include a heater that will not fire, a pressure switch fault code, or a switch that stays open despite confirmed water flow. A: Testing continuity across the contacts with a multimeter under flow helps confirm the fault.

Q: Can this switch be installed without draining the system? A: In most cases the switch threads into the header and can be swapped after isolating the heater and relieving system pressure. A: Follow the heater manufacturer's service procedure for your model.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.