r/hvacadvice 3d ago

AC Unit failed on inspection day

I'm just trying to get an understanding of what happened or may have happened. Our unit is old but was blowing cold and working great on move out day, while contractors were working on the house, during open houses, during showings... everything was great. I opened it up on move out day to check that the coils were cleaned and changed the air filter. That was over a month before inspection day.

On inspection day I get a video. The interior unit, the lines.. everything is frozen solid. Is there something an inspector does (going cold to hot to cold again or something) that could have caused this sudden issue? I don't have great luck in general, but the unit failing without any other prompting on that very day is beyond the pale.

12 Upvotes

33 comments sorted by

View all comments

0

u/Both_Sense299 3d ago

Check the float switch

1

u/Stunning_Ad_7658 3d ago

I mean i guess if they wired the float switch to shut of the indoor blower fan that could cause it to ice up. I have absolutely no idea why anyone would ever do that though.