Katherine Bain
Seedling
Hi have had an aquamanta 1200 up and running smoothly for about four months. About 3 weeks ago it started getting air into the system and expelling it about every 20 seconds. I have tightened every connection, checked the O ring ( at least visibly ) and can find no source. Priming doesnt help. What have I missed??? Would be grateful for any suggestions as it sits in my office and the noise is very annoying!