What does it mean when there is no water in pump that holds the cartridge for swimming pool?

If there is no water in the pump that holds the cartridge for your swimming pool, it means that there is a break or leak in the suction or return line. This can cause damage to the pump and reduce the efficiency of the pool's filtration system, which could result in poor water quality and/or damage to the pool's liner or other components.

If there is no water in the pump, it could also mean that the pump is not properly primed. To prime the pump, you must check that there is water in the pump basket and pump lid, and that the air bleeder valve is open. If the pump still does not prime after filling the pump basket and bleeding the air, it may be necessary to use a pump primer to force water into the system.

If you suspect a leak in the pool's suction or return line, you must turn off the pump and inspect the system thoroughly to identify the source of the leak. If you can't find any visible leaks, you might use a pressure test to identify a hidden leak.

To perform a pressure test, turn off the pump and then plug all the return jets and the skimmer line. Using a pressure gauge, attach it to the pool return line and slowly apply pressure to the test lines until it reaches the recommended test pressure, usually 15 psi. If the pressure drops over time, there is a leak in the system, and you must locate and repair it before operating the pump again.

To repair a leak, you must replace or patch any damaged sections of the suction or return line. If you can't repair the leak yourself, you must call a professional pool technician for assistance.