It sounds like either your valve is not set completely to "filter" or your valve's seals are degrading. If the valve is completely set to "filter", then either replace the valve, or plug the end of the backwash hose.
Here's a good place to look for new backwash filters: http://www.swiftpoolsupplies.com/category/product-list/backwash-valves
Take the cartridge out and hose it off
To replace a pool flex backwash hose, first, turn off the pool pump and drain any remaining water from the hose. Disconnect the old hose from the backwash port and the waste outlet, using pliers if necessary to loosen any clamps. Measure the length needed for the new hose, cut it to size if required, and securely attach it to both ends using clamps. Finally, check for leaks before resuming normal operation of the pool system.
Backwashing is done to clean the filter media in sand and DE systems. Cartridge filter systems don't have a "backwash" provision. You just remove the cartridges and wash off the dirt and debris with a hose.
To attach the hose to a filter, locate the inlet and outlet ports on the filter unit. The inlet port is usually where water enters the filter, while the outlet port is where filtered water exits. Securely connect one end of the hose to the inlet port and the other end to the water source, then repeat for the outlet port to direct the filtered water to its destination. Ensure all connections are tight to prevent leaks.
Depending on the type of filter it needs to be cleaned or backwashed. Cartridge filter: Hose off. If pressure does not go down buy new cartridges Sand filter: Backwash, if pressure does not go down replace sand DE filter: Backwash, if pressure does not go down remove element from tank and hose off and or acid wash. Also... always make sure you gauge is working
Filter setting intakes pool water through the skimmer, sends it through the filter (then heater, if any) and back into the pool. Backwash sends pool water through the filter in reverse and dumps the water out for cleaning purposes. In my experience if pool servicing is overdue you may need to backwash several times, running the filter setting a minute or two (without adding DE) in between each backwash. The filter is not really clean until the water runs clear. Recirculate is a round robin water voyage from skimmer to return port bypassing the filter if the pool is piped for this feature. Waste dumps water from the skimmer without going through the filter. Closed prevents water from entering the filter tank and should not be used with the pump running. It is for winterizing and servicing only. Some pools are piped so that the closed setting is used when vacumming the pool (with pump running). Most pools are piped so that the closing off of water from the filter is accomplished by turning a valve on one of the water lines. Rinse: Runs water through the filter in the normal direction and out the waste hose. This helps the sand to compact back down or the DE to settle back into the mesh before you start cycling back into the pool.
Redirect to the street via PVC pipe or "discharge hose" if codes permit. Redirect to a sewer line. With the latter you must be careful that the waste water from the filter does not overflow into the toilet or bath tub or shower.
On your typical sand filter the water basically goes in through your multi-port valve and works down through your silicat sand (Filter median) and into your laterals to your pool or spa. During backwash, the water is taken from your spa and ran through your laterals first and agitating the silicate (filter median) and pulls most of the "waste" that was trapped by your filter and flushes it out through your drain hose off your multi-port valve. This does two things, one of which was mentioned prior and the other is that it agitates the sand in the tank and removes any channels that have been bored from water being pulled down from the top. It cleans the filter median as well as gives a reguvinated filter without pitting or "worm holes". You can also use a cleaner that you put into the skimmer basket and shut off the main drain lines and backwash as normal. This helps remove some of the soaps and fats that are attached to the filter median and don't get agitated loose through normal backwash.
To back flush a water softener, first shut off the water supply and put the softener into bypass mode. Next, connect a hose to the backwash drain and slowly open the backwash valve to allow water to flow in reverse through the unit to flush out any accumulated debris. Finally, close the backwash valve, remove the hose, and return the softener to normal operation.
AnswerAttach a pole to the vacuum with wheels. Place the hose into the hole on the bottom of the vacuum. Lower the hose and pole, with the vacuum body with wheels into the water. Lower the hose fully into the water, so that it fills up with water - no air. Cover The end of the hose with your hand. Lift the end of the hose up and into the strainer area. With the skimmer baskets removed, place the hose into the water there, and place it into the black hole, or jet system, inside the skimmer area. That starts the vacuum. Move the vacuum head, pole, and hose around, while picking up all dirt and debris. If there is a lot of dirt and debris, clean out the lint strainer, and backwash. You must backwash, otherwise you will be sending out dirty water to clean with. After the backwash, continue until complete. After you are complete, backwash one more time, after cleaning out the lint strainer.Never backwash before removing the vacuum hose and plate, and cleaning skimmer basket and pump basket. Any flow restrictions reduce backwash effectiveness.AnswerIf you have an above ground pool, you must place the cover over the skimmer that has a protruding end (it should have come with your pool). The vacuum hose fits right over the end of the cover.
Need to replace the water pump.
The hoses connect to the filter by attaching the inlet hose to the filter's intake port, which allows water or fluid to enter the filter for cleaning. The outlet hose is then connected to the filter's discharge port, enabling the filtered fluid to flow out and return to the system. Proper sealing and secure fittings are essential to prevent leaks and ensure efficient filtration. Always refer to the specific filter's manual for the correct installation process.