Hayward Pressure Switch for FD Series Heaters | FDXLWPS1931
Hayward

Hayward Pressure Switch for FD Series Heaters | FDXLWPS1931

$57.99
/
$9.99 flat shipping on orders under $100.
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SKU:
FDXLWPS1931

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About This Item

The Hayward Pressure Switch (FDXLWPS1931) is the OEM replacement water pressure switch for Hayward FD Series pool and spa heaters.

IMPORTANT: PROFESSIONAL SERVICE REQUIRED
Gas and electrical heater components must be serviced by a licensed pool professional or qualified HVAC technician. Do not attempt to service gas or high-voltage components without proper certification.

This pressure switch monitors water flow conditions within the heater and prevents the unit from firing when water pressure is insufficient. By blocking ignition under low-flow conditions, it protects the heat exchanger and other internal components from heat damage caused by inadequate water circulation.

Specifications

Hayward Part Number FDXLWPS1931
UPC 610377401876
Channel Open Line

Poolaroo Pro Tip

Before replacing the pressure switch, confirm the heater's water flow rate is within the manufacturer's specified range. A faulty pressure switch can mimic symptoms of inadequate flow — such as the heater failing to ignite — but replacing the switch without addressing an underlying flow restriction will not resolve the issue. Always have a licensed pool professional or qualified HVAC technician perform diagnosis and replacement of heater components.

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Hayward

About Hayward

Founded in 1925, Hayward has evolved from a small specialty metal shop in Brooklyn into a global powerhouse in residential and commercial pool equipment. For nearly a century, Hayward has pioneered advancements that revolutionized the swimming pool industry—most notably by transitioning pool equipment from heavy, rust-prone metals to durable, corrosion-resistant thermoplastics in the 1960s.

Today, Hayward is synonymous with reliable, energy-efficient performance and cutting-edge technology. From the legendary Super Pump to their modern Omni smart pool automation platforms, Hayward builds equipment designed to give pool owners total control and peace of mind. By focusing on sustainability, category-leading energy efficiency, and seamless smart home integration, Hayward empowers DIY homeowners to spend less time maintaining their water and more time enjoying their backyard oasis.

Why We Trust Hayward
A Century of Innovation: Over 100 years of engineering excellence, leading the industry from early metal valves to modern smart pool technology.
Unmatched Energy Efficiency: Pioneers of ultra-high efficiency variable-speed pumps and heating systems, saving pool owners money on monthly energy bills.
Total Smart Control: Creators of the Omni automation platform, giving users seamless, wireless control of pool chemistry, lighting, and temperature from their smartphones.
American Manufacturing Focus: The vast majority of Hayward products and components are proudly manufactured in United States facilities, ensuring strict quality control and dependable performance.

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