Quote:
Originally Posted by bob deluke
Like Zeke says, stay quiet but keep your eyes open. You’ve been armed with plenty of info from the board to have a pretty good idea of what’s going on. I wonder if the techs are NATE certified? Years ago, I had my techs attend Carrier and Trane tech schools to learn how their equipment should be serviced including understanding a psychometric chart to properly charge a system. At least the hvac owner is standing by his installation and hopefully the issues will be resolved. Best of luck….
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The contractor is part of the Mitsubishi Diamond Contractor program. This is supposed to mean at least
one employee has been to Mitsubishi for training. I think there are also some on-going training requirements.
Re. psychometric chart - as I understand mini-split systems don't "use" the chart in the same way as standard AC. E.g. there appears to be only one tap (on the pressure side).
My contractor has one person and that person lives ~2000 miles away, TX vs CA.