Hi there, We are a fasion store in a shopping mall, our unit's thermostat looks working fine, when you turn it on, it display cooling model, we also can heared the fan working, but no cold air comes out, the fan looks working, and our neighbor's units everything fine, just our unit no cooling, what wrong with it!? due to this is a centre air conditional system, the problem should be in our unit only, but everything looks fine, anybody can give some ideas? thanks
Could be a long list of things. Have the tools needed to check it out? If so locate the AC, usually on the roof of a mall around here, and tell us if it's getting high and low voltage. We'll start there instead of going through every possible cause of no cool.