one unit is fine .... other one froze *half * of the evaporator up solid yesterday all the way to one of the compressors ... and it was frozen too .... but still kickin along like all was well .
Systems been running for a month now . It may have froze up before and nobody knew it because I only stumbled upon it today when changing filters .
I didnt install these units ... but the boss told me to diag them before we called someone .
Belts fine , all fans are moving alot of air , all 4 filters fine .
Yesterday was 97 and humid .
*Off topic question as well * ....I do wonder .... why is it plumbed to draw in outside air into the return ? There is a big screen there on the units obviously made to draw in outside air all year around to mix where the return air comes up from the store .
But anyhow .... my guess it its low on charge ? Im gonna get some soapy water and check solder connections today . I shut this one down last night to thaw out .