Please beware. Just had engineer out to look at my air con as it was tripping electrics out. He went up on the roof and the lid (with 8 screws) has been removed and left open and the fan is missing. A fan is on the roof broken in pieces but nowhere near my unit. Now in his expert opinion there is no way that the air con blew and took the lid off as it has 8 screws and 'may' have been taken to repair someone elses. Who knows! Annoying and has cost me way more to fix as there is water damage as lid has been off for some time. Blue Monday indeed today ☹
So please if you do see any units with lids open/off from your apts (i can see blocks in front of me) let the aea know asap to avoid more damage.