Hi guys
So yesterday i went to investigate a leak coming from the ahu, it seems the drip tray is over flowing and coming out of the side panels instead of the condensed drain.
I have a feeling that there is a build up of negative pressure or something due to blocked filters as all 5 units have same problem. How ever each unit has a j-trap as the condense pipe comes out of the unit, could this be an issue?

Has any one gt any ideas or experienced this?

Thanks guys