So got a wire brush and clean off all the gunk off the inlet port for zone 2 return , then loosen the nut and reseat the PEX and tighten it down.
reason i noticed the leak was my zone 2 pump went out or seems to be out as my heat exchangers in the bedroom and bathroom are not blowing hot air , similar issue last year when i switch out the the buler pumps. So i am like ugh... cause i notice the leak when i was checking the temp on the output for zone 2 was not getting hot as zone 1 output. ( Wierd thing is , when i came home yesterday i noticed a puddle of fluid on the floor from the over fill line.. which should have not as i have not added any fluid in the AQUA hot in the last 3 months and its been working fine with the tank half filled ... last time that happen was when pump 2 went out assuming that maybe if let all the fluid back into the AQUAHOT causing an over fill. o well, my next stop I will troubleshoot the pump .... . but if its not one things its another .. get this.. doing my pre check for tomorrow travel day... i did notice the bedroom heat exchangers also leaking in the engine compartment .. notice a good size puddle on the side frame.. so i check the clamps and seemed that one of the clamps was cracked .. so replaced that so hopefully that fixed that . will have to test once i figure out if the pump for zone 2 is working..
I had contacted online agua hot store and they have a parts kit for the those return ports.. once i get the part numbers , i will post...
Originally Posted by HarleySG
Good luck and let us know how it goes