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most hot tubs have two motors. one is a circulation pump to move water when the heater starts and the other comes on when the jets are being used. from the sounds of it, the one pump isnt running properly
Hi, even though the two jets appear to be spraying upwards, the force may be diminished by partially blocked nozzles. To check remove the debris bag and observe jet action as cleaner is held near water surface. the action must be strong enough to shoot well into the air. If not, then often a piece of wire can be inserted into jets to dislodge the debris. you may have to do this one or more times.
the other cause of insufficient jet pressure is that the feed hose to jets has ruptured or the zip strip retainer has broken. unit must then be partially disassembled.
This can be caused by either by minimal or no water being delivered by the vacuum jets or something plugging the path to the bag. I assume you have checked the path to the bag so it is probably the first cause. The best way to check this is to turn the pump on while the cleaner is in the pool, pull the cleaner to the side of the pool, pinch off the hose just before the backup device and lift the cleaner onto the deck. Some water should be coming out of the rear jet and the tail. If you remove the bag and look down through the cleaner you should see the two jets that shoot water up. If you stand back and unpinch the hose and the water doesn't come up way above where the top of the bag would be then either you have plugged jets or the hoses inside the cleaner are disconnected. I suggest the latter because if the jets were plugged I would expect the jet that turns the wheels would be plugged also. If you don't feel competent taking it apart then bring it to Leslies Pool Supplies and they usually can open it up while you watch and repair it for the cost of parts. By watching them you may learn enough to be able to do it yourself the next time. I hope this helps.
Before doing anything, take the Jet Vac out of the pool and set it on
the deck. Stand clear and turn it on. It should have enough water
going through the blue jet to spray several feet and propel the jet vac
on dry land.
What propels the Jet Vac is not the water going through the hose, but the water going through the little blue Jet under the Hose. You can unscrew this from the bottom of the shell and clean out any obstructions. Also, check the screen at the connection where the hose meets the wall. It is located in the white valve with the red button on it right at the pool wall. It will unscrew from the wall of the pool with the system off. Also make sure the booster pump is coming on.
Also, it may be stuck in reverse or neutral. If this is the case there will be jets of water shooting forward of the jet vac when it is on dry land.
This is an ether or situation. Most systems now are set up with three way valves and if you turn the jets on you will shut the pool returns down. If you turn the pool back on you will shut the spa jets off.
If you don't have directonal eyeballs on your jet's you can get a dirveter for the jet that will push the water down the wall rather than out into the pool. Get these at your local pool store. Baracuda and Kreepy Krawlie both make them.
Remove your filter cartridge and test again. If flow is still low, then check for debris plugging the inlet to the pump. If removing the cartridge resolves the flow issue, then clean the filter or replace it.
you probably have a check valve (back flow preventer) on the line that supplies water to the spa when the pool is filtering as normal. Your check valve may have some debris in it or the seal inside may have failed allowing the water to drain into the pool when the system is off. You should see a valve on the return line that splits off from the pool return line on your system. There are several different check valves on the market, some have a clear lid that you can inspect without taking it apart. Some of them cannot be taken apart. Your challenge will be to find the check valve, then try to check to see it debris may be holding it partly open or it the rubber seal inside is damaged or missing. I hope this helps.