What was found
WHILE CLIMBING OUT OF STL THE AIRCRAFT ENCOUNTERED MODERATE ICING CONDITIONS BETWEEN FL120 AND FL150 AND THE CREW RECEIVED A BLEED 1 LOW TEMP MESSAGE ON EICAS. AFTER EXITING THE ICING CONDITIONS A BLEED 2 LEAK MESSAGE WAS DISPLAYS ALONG WITH WING ANTI-ICE FAIL MESSAGES. THE CHECK LISTS WERE FOLLOWED AND THE BLEED LEAK MESSAGE WAS NO LONGER DISPLAYED. THE AIRCRAFT RETURNED TO STL AND LANDED WITHOUT INCIDENT. MAINTENANCE PERFORMED A BLEED LEAK CHECK OF THE ENTIRE BLEED 2 SYSTEM WITH NO LEAKS NOTED. THE BLEED SYSTEM 1 PUSH BUTTON WAS REPLACED TO CLEAR THE BLEED 1 LOW TEMP MESSAGE WITH NO FURTHER DEFECTS NOTED.