Hi guys, kind of new to the board. I live in Phoenix, AZ and just had two units installed, a 4 ton and a 2.5 ton; both xl19i units. Last night my wife and I noticed the downstairs wasn't cooling at all. I checked the air handler and it was running on its higher speed; went outside to check on the compressor. The fan was running as if the 2nd stage (higher power) was on, but I put my head down where the compressors and heard nothing So what I gather is the 2nd stage won't kick on.
So far, the contractor has been very good, the folks in the office know me by voice now, they sent a tech out first thing this morning to check on it, and after he did his assessment on everything, they'll have a new compressor to be installed tomorrow. From what I understand it's just the compressor, not the full heat pump unit outside.
When the tech was out I tried to be as inquisitive as I could, and here was his assessment: The 2nd stage compressor has some sort of malfunction internally, and his multimeter showed that it was in Locked Rotor Ampere state, or something like that. He then showed me that the side panel gave out these numbers, and they matched his multimeter.
I'm going to be a very inquisitive observer when they are replacing the unit tomorrow, and plan to ask lots of questions. Do you guys have any sort of simple checklist I can run down with the installers? Thanks ahead of time