Part # 6223-180
Manufacturer Code FDXLWPS1930
Dimensions 2.9" L x 1.92" W x 1.92" D
Hayward® Water Pressure Switch – FDXLWPS1930
Model: FDXLWPS1930 | OEM Replacement Part | Fits: Hayward® Universal H-Series Low NOx Heaters
Maintain Safe Operation in Your Hayward® Heater
The FDXLWPS1930 is the genuine water pressure switch replacement for select Hayward® Universal H-Series Low NOx pool and spa heaters. This pressure switch plays a critical role in heater safety—detecting water flow and preventing ignition when flow is insufficient.
✔️ Key Features
✔️ OEM-grade replacement – ensures proper fit and reliable performance
✔️ Maintains safe heater operation by verifying water flow
✔️ Prevents dry firing and potential damage to the heat exchanger
✔️ Plug-and-play installation – no special tools required
✔️ Durable, corrosion-resistant construction for long-lasting use
➤ System Compatibility
➤ Fits Hayward® Universal H-Series Low NOx gas heaters
➤ Commonly used in models: H150FDN, H200FDN, H250FDN, H300FDN, H350FDN, H400FDN
➤ For use with both natural gas and propane versions
⚠️ Important Note
⚠️ Always disconnect power and turn off gas before servicing your heater.
⚠️ A faulty pressure switch may result in heater ignition issues or safety lockouts.
can part #6223-180 cause a "LO"code on my pool heater?
Reply
Hi Dom, The "LO" error code can be cause by several different things as reference in the Hayward H-Series Owner's Manual, with the faulty pressure being one of them.
Reply
Does this water pressure senor fit the H250?
Reply
Hi, Brad. They're different models of the H250 Heater, this Pressure Switch - FDXLWPS1930 will work with the H250FDP or H250FDN models.
Reply
I keep getting an error code of LO on my Haywood 400FD pool heater display. The filter is clean and the heater is receiving 100% water flow-through. How can I check to see if the water pressure switch is defective? Is Water Pressure Switch (fdxlwps1930) the correct replacement part?
Reply
Hi, JJ. The "LO" error code could be cause by a faulty Water Pressure Switch, Vent Pressure Switch, or Temperature Limit Switch. Use the Universal H Series Heaters Troubleshooting Guide to diagnose the cause.
Reply
The Most Recent Reviews
(5 out of 5 stars) Good product
Reviewed By: DBinMI ()
Very pleased with the ease this part was replaced.
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