Ok...thank you. Whats a clean out access for and what is an unused pressure line? Sorry - learning as much as I canThen I don't know. Could be clean out access, could be unused pressure line, or unused vacuum line, or ?? Hang around the hoop here for a couple days, one of the heavy weights will weigh in with more ideas.
An autofill often looks like a skimmer lid, with the guts under the lid being similar to the workings in a toilet tank. Do you have an opening in your deck, similar to a skimmer lid, that is NOT a skimmer?That is probably it then, because I do not have an autofill. I add water manually using pool fill. Thanks for the info!