lisalemus

I sent a pm... How do I send you the pics. I don't see options for attachments

I have an automated pool spa combination with a DE filter. After the last :)backwash i realized that when I turn the spa on the water keeps falling in the pool as if the main drain for the spa was not working so the spa does not heat up properly. I tried draining the spa and it worked. The jandy valves are rotating the right way. Any ideas on how to fix this or what could be the issue.? Any help would be greatly apprecciated!