Cheesypeas, If you look in your manual vol 1 1-02-79 pg 13 (mine is rev 26) it says you'll get these messages if you have EICAS version 16.5 or earlier. This is due to low bleed temp as the APU bleed is not designed to operate as deicing. Get your operator to upgrade to latest EICAS (think it's 20.1?) this will cover your "Wing A/Ice Fail" and "Stab A/Ice Fail", "WG A/ICE ASYMMETRY" messages.
BIGBAD, have you ever flown an ERJ? I got airbourn this passed week, at max gross and climbed to service ceiling (FL370) from FAJS (5500'). ISA was +20,dropped to +10 all the way up to cruise, and was at M.775 within 24min. No need to cook my engines either. Don't remember ITT goining above 815C.