Why does the valve at wall on polaris 3900 sport keep popping up

SOURCE: Back-up valve is not working properly. Can I take

With these pool cleaners, if they are not backing up, there are several things that you could try. Lift the valve out of the water and watch the jet. It should be going on and off. If it is not, you will need to replace the back up valve. If it appears to be working properly, try adjusting your wheel RPM.

SOURCE: My Polaris 3900 Sport Pool

If your pool cleaners not making proper cleaning patterns on the pool floor or turning it tight circles, try checking your RPM and adjusting your thrust jets. If the RPM is higher than 32, you will need to decrease the water flow. Also, make sure that your feed hose is floating and is not becoming tangled. Finally, check the filter bag, if full it can weigh the cleaner down on one side.

SOURCE: My polaris 3900 back up valve is stuck most of the

You will probably just need to replace the pool cleaners backup valve kit. Call the manufacturer or a local company who sells parts for the cleaners and find out if they have it. It will be part number G52.

SOURCE: My Polaris 3900 Sport is

With these automatic pool cleaners, if they are not staying firmly on the bottom of the pool, it is most likely that there is air in the appliance casing.Try submerging your cleaner. Keep the cleaner vertical while you are putting it in slowly to let the air out. Ensure the unit sinks to the bottom of the pool.

SOURCE: My Polaris 3900 that I

Check your filter, pump, and debris baskets for excessive waste that could decrease the pool cleaners water flow. Check the hoses, hose connections, and swivels for leaks that could cause loss of water pressure. Check your wheel RPM. If it is below 30, you will need to incease the water pressure. If you have an adjustable return valve, make sure it is open all the way. Also, make sure that your pump is working properly.