I observed that when I enable air-conditioner, after awhile the valve (red one on the photo attached; correct me if it's called differently) starts leaking, the water drips from under the red "valve". The pipe which is next to "red valve" is fine, no leaks, it withdraws the water in to drain hole in the floor.
I wiggled it, but it looks it fits in quite tightly. I'm not sure if it is possible to replace it or put some rubber ring under it.
Is it common problem? What would you recommend to do?
Thanks.
Best Answer
That plug is where I add biocides to prevent mold buildup in the pan, mold is the main cause of obstructions , if the pan is starting to drip you probably have some cleaning to do as the water should not build up in the pan and a small layer has probably raised the water level because it is acting like a dam.
I have had customers ask how can mold grow in there it’s only water and metal, well this is almost true but dust and fine organics get trapped in the coils and drip down to the pan, when the conditions are right a mold colony starts growing, For this reason pros recommend having your unit serviced, adding this biocide treatment is a requirement for large commercial systems to prevent legionnaires disease, I have not heard of it in home systems but it is possible. So you may need to clean and treat your pan or eventually the drain line will be totally blocked and the water may come out in other areas less noticed and cause problems.