On My signature spa the jets won't work , when i press the jets button it's just a clicking sound , Also Spa will not heat and often has different error codes Dr,Sn.I gather that after looking through various manuals that all of this is related
I have gone through the troubleshooting
1) Draining spa (twice) , 2) Loosening the union barrels to get rid of air 3) Replace filters 4) water at correct level
Any other ideas or help will be much appreciated , Thanks