the "click" means that the compressor clutch engages and the frosting of the tube means the compressor is working.
the "no air" means that either your blower doesn't work or your evaporator is really dirty that the air coming out of the blower is blocked as soon as it passes the evaporator.
from your post, most likely the blower connected to the evaporator is not working. check the fuse. if the fuse is ok, then could be a stuck up blower fan. or a loose wiring connection.
in my case, nung na-stuck up ang bearing ng blower ko dahil antagal naka-garahe si oto, i just gave it a slight nudge, luckily umokei.
sinilip ko yung blower. binaklas ko copartment. nagpalit ako carbon brushes, buti nalang mura lang.. 90 lang. just reshaped the carbon brush by sanding the sides to fit the housing of the carbon brush. ako na mismo gumawa. no choice. low budget eh. hehe.
ok na sya.. this is the first time nakpa problema aircon nito in over 10 years. naubos talaga yung carbon brush. thanks for the inputs guys!! :D
baka brush lang yon o yung fuse ng blower kaya ala ng binubuga na hangin,kaya nag yelo ang evaporator mo kasi ala ng dumadaan na hangin,na istak ang lamig sa evaporator mo kaya nag yelo