Nothing yet, just have a couple system with it. Thought I had heard some people complaining about them for some reason or another, but couldn't remember why. Just wondering what others have seen with them.
Only had issue with lee-temp maybe twice. Once another associate replaced a headmaster on a lee-temp that ...well, let's just say that it did not owe the customer any money. The other was a leaking sight glass (loose) . Charged it according to the directions and discovered just how much had leaked out over a period of six years.
It seems that some people pass on the rumors simply because they don't feel comfortable with a given brand name. Liebert is or has been reliable, and has sufficient tech support. They will help you determine your situation with a lee-temp, and you'll be like a 7-11 chili dog--good to go!
Tough little units...very few problems. If there is a problem, its refrigerant leaks. Usually, the guilty culprit is the liquid line solenoid. The o-ring gasket in those Alco valves gets frail and looses its seal. I replace them with Sporlan valves every chance I get.
It's true, these units are very reliable and can take a lot of abuse, not to mention, adverse weather conditions.
"Excellence is the gradual result of always striving to do better"
No problems that I am aware of..... I find many of them with an incorrect charge due to failure to follow start-up manual charging instructions.
Control valves for flooded condenser rarely fail....
Just another type of head pressure control....