Zodiac Jandy Pro Series JXi Flue Sensor Kit (R0719400) lochinvar 9A] [Hardwire] (6520131) is engineered

9A] [Hardwire] (6520131) is engineered for air blowers applications

A check valve is useful because it helps prevent backflow

A spa or pool filter cartridge helps the system continue removing suspended debris before water returns to the pool or spa

This Hayward drain valve is a replacement part for compatible CZ

or no longer switching correctly between positions

Zodiac Jandy Pro Series JXi Flue Sensor Kit (R0719400) lochinvar 9A] [Hardwire] (6520131) is engineeredThe JXi flue sensor kit monitors exhaust related conditions in compatible Jandy JXi heaters and helps the control system protect the appliance during operation. A failing sensor may contribute to fault codes, lockouts, or unreliable heating even when the burner and gas train appear normal. Replacing the correct sensor kit supports safer heater operation and more accurate diagnostic response. Use R0719400 only after confirming the JXi model and service