What was found
ON CLIMBOUT AT 12000`, A BLEED LEAK 1 WARNING MESSAGE ON THE EICAS AND BUTTON. LEVELED OFF AT 15000` & FOLLOWED QRH THEN DESCEND TO 10000`. DESELECTED BLEED 1 AND LEAK MESSAGE DID NOT EXTINGUISH WITHIN 3 MINUTES FOLLOWED QRH WITH BLEED 1 VALVE CLOSED AND PUSHED IN ASSOCIATED BLEED AND PUSHED OUT OPPOSITE BLEED AND MESSAGE EXTINGUISHED. 8100` CABIN ALTITUDE REACHED. BLEED 2 WAS WORKING FINE. " COMPLIED WITH FIM. INSPECTED BLEED 1 DUCTS FOR DAMAGE. NO DEFECTS NOTED. REMOVED AND REPLACED DUAL TEMP VALVE. OPS CHECK SAT. PERFORMED HIGH POWER RUNS. NO DEFECTS NOTED.