My AC says it is trying to cool to 73 but is reading 75. I changed the filter, which didn't help. I looked in the closet, and apparently the installers were supposed to install an "auxiliary shut off switch to a/c condensation line to prevent water damage in case of main drain failure." I have water condensation dripping down a long white PVC pipe and water collecting on top of the unit. What is going on with my AC?
I believe you may have a charge related problem. When ac systems start having icing issues they stop effective cooling a low charge can cause ice to form on the evaporator high moisture in the air you see , sometimes with severe icing it takes hours for the ice to melt, the system may run ok for a short period of time then start icing up. A simple recharge can solve this very common problem , if a R22 system note the cost of this refrigerant is very high +100 per pound a 5 ton system usually has 11-13 lbs and will need 5-7 lbs in most cases.