View Full Version : Why my spa drain when the pump is off
nick763
May 24, 2010, 07:50 PM
My spa drain when my pump turns off
KISS
May 24, 2010, 08:03 PM
Best guess, it's backsiphoning because the pump isn't being vented.
Dr_Spa
May 25, 2010, 08:26 AM
Drain(s) to where?
The ground? The pool?
ballengerb1
May 26, 2010, 11:48 AM
Spa, hot tub, whirlpool??
poolman64
Jul 20, 2010, 04:39 PM
If this is an inground pool/spa combination with the spa being slightly higher than the pool, you have a check valve in the spa return line that is sticking or worn out.