Polaris 3900 won't stay connected to pool

Bex811

Member
May 15, 2024
7
Whitehouse Texas
Pool Size
16750
Surface
Vinyl
Chlorine
Liquid Chlorine
New to the world of in ground pools and inherited a polaris 3900 with our new home/pool. Got it figured out and hooked up but when turning the booster pump on it blows the hose right out of the wall of the pool. With just the regular pump it stays put but obviously the cleaner isn't working properly (moves slowly, gets stuck, ect). It's like i can't get the fitting tight enough and the extra pressure from the booster blasts the hose out of the fitting. Would replacing the fitting in the pool and on the hose be the next steps? Any other suggestions?

Thanks y'all!