I am having a lot of air bubbles in my return lines to the pool. I have a AutoPilot Salt Chlorine Generator (RC 35/22) it is see through and i can see a lot of air in the cell. There are no air bubbles in the pump (when you look through the plastic cover over the basket). I recently had all the lines pressure tested by a pool company and they found no leaks.
There is a three way valve imedialtely after (in line with ) the salt chlorine generator cell before the water goes into the pool. This three way valve controls which returns get the water. There are 4 returns so you can have two on at a time or leave the valve in the middle and then all 4 returns shoot water out.
The interesting part is the when I turn the valve all the way over to only use the 2 returns in the steps of the pool no air comes out, when i turn the valve to 50/50 or on the two other returns outside the pool steps the i got a lot of air.
How is this possible? It is not on the suction side so how can air come into the system. If there is a leak wound water shoot out somewhere?
30'000 Gallon Salt Water
AutoPilot Digtital Nano Salt Water Chlorine Generator
AquaCal Heat Pump
Jandy 1.5 HP Model#PHPM1.5
Candy Pool Filter Model#DEV48