Bubbles in the pump ONLY after water has been diverted into the heat pump

joxn0915

New member
Feb 28, 2024
3
New Hampshire
Hello,

I hope someone can assist me here.
I'm having an issue with my pump having air bubbles only after I have diverted the water to go into the heat pump, otherwise there are no bubbles. I understand there could be bubbles due to air in the suction lines, however, I don't think this is the case since there are no issue when the water is going into the pump (Variable speed) to filter (cartridge) to salt cell and back into the pool. Pool is only a year old, and I am not sure if there could be an issue with the heater even though it is perfectly warming up the water.

Before i upgraded to an inground, I used to have a similar issue with an above ground pool and single speed pump but it would clear each time I'd clean the cartridge filter. I have cleaned the filtered, upped the RPMs, released air via the filter and the issue still persist. What could this be? I don't see any water leaks anywhere neither.

I20250527_162227.jpg can provide whatever additional info is needed.

Thank you
 
What problem are the air bubbles causing?

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