20 Most Recent Jandy Ray Vac Pool Cleaner for Inground Concrete Questions & Answers

Make sure that your automatic pool cleaner doesn't have an obstruction in the hose that might not immediately be visible. This could cause it to circulate in one end of the pool. Also, check the water pressure to ensure that it has enough force to travel the entire pool.

I have the same problem and the best solution is to repair/replace the hydro timer kit. It has inner gears that are plastic and wear down and doesn't rotate through the cycle of water flo that changes it's direction. I'm in the process of exhaustive repair and I'm going to replace the hydro timer - (inside part only) and then see what happens. Moving the gears did change it's moving patterns tho.

Remove the six screws from the side of the backup valve and remove the gear assembly and replace it with a new one.

Here is a copy of the users manual for these pool cleaners:

http://www.zodiacpoolsystems.com/Product-Archive/Cleaners/~/media/Zodiac/Global/Downloads/H05551.ashx

Your backup valve has probally gone bad. You just need to pull this out of the line and take it to a pool store and have the internal replaced. They will do this for just the price of the part in most places.

Clean the bottom screen first.
Where the hose hooks to the wall you have a finger screen either in the wall or sticking out of the wall. Ether way pull that out and clean it.
Chech all of your hose floats and jet's make sure none leak and check the float inside the head. Good luck.