I have inground pool with a sand filter, from last couple days, after start the pump, the filter and heater vibrates and pressue gauge reading is fluctuating very fast. If I put filter to recirculate stage, the problem went away. If put to filter stage, it happened again. I already back washed filter, water level is good too. When vibrating, there is still water return to pool. any idea why this happens and what's solution to fix this?
Filter pressure vibrating
- Thread starter weitang99
- Start date
- Jul 3, 2013
- 9,028
- Pool Size
- 15000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool SJ-40
Welcome to TFP 
You may need to do a deep clean on your sand filter, it may be channeling and making the filter vibrate..
Deep Cleaning a Sand Filter
I hope this helps
You may need to do a deep clean on your sand filter, it may be channeling and making the filter vibrate..
Deep Cleaning a Sand Filter
I hope this helps
What brand and model of filter do you have?
Have you done anything to the multiport valve lately?
Do you see any air in the pump basket?
Do you get any air out the filter air bleed?
Have you done anything to the multiport valve lately?
Do you see any air in the pump basket?
Do you get any air out the filter air bleed?
I would also check for trapped air in the filter. Also check the line between the pump and the return for obstructions.