A warehouse/shop that came with the house I just got. The back rooms have one a/c(24k btu) and the two main rooms share a 42k btu a/c. The 24k I workin fine, but the 42k is not cooling or blowing any air. Both outdoor units are running and both indoor units are apparently running. The indoor unit for the 42k btu has a large copper tubing coming out of it that is frosty and freezing to the touch(this is the unit that is not working). What does this mean? Needs to be recharged?
Thank you, and sorry for being a/c handicap and not knowing the terms.