Hi all, I have to go to a job tomorrow that has had endless problems with units going into drain pump fault. The indoors a mitsi PEFY-P25VMA-E. Theres around 140 indoors. They have only been installed for 3 years. From what I can see we took over service 2 years ago and have been back multiple times to fix. The techs are reporting slime build up in trays and around pumps. The drains pump up and run 3 to 4 meters to a tundish. No drains are connected. Anyone had this problem before?