Jandy Water Pressure Switch Assembly

A faulty pressure switch often causes the heater to display a flow error code or prevents it from firing up entirely. If your heater isn't turning on despite the pump running, or if it cycles on and off erratically, the switch is a likely culprit.

No, this specific part is designed exclusively for Jandy LXi Low NOx Pool and Spa Heaters. Always verify your heater's specific model number before purchasing to ensure a proper fit.

If you are comfortable with basic pool equipment maintenance, this is a manageable DIY task. However, because it involves electrical components and plumbing, ensure the power to the heater is completely shut off before beginning, and consult your owner's manual for specific installation steps.

The pressure switch acts as a safety mechanism that detects water flow. It ensures the heater only activates when there is sufficient water circulating through the system, which prevents the unit from overheating or sustaining dry-fire damage.

This is a direct-fit replacement part designed to swap out with your existing switch. It typically includes the necessary components for the assembly, but you should retain any existing fittings or hardware from your original unit unless instructed otherwise by the installation guide.