What was found
DVT GSO ACCT MECH. EMERGENCY. DECLARED EMERGENCY.CHG EQ. FLT CONTINUED E2 A/ICE FAIL ON EICAS DURING CLIMB AFTER EXITING ICING CONDITIONS. QRH PROCEDURES COMPLIED WITH MESSAGE DISAPPEARED BUT VALVE OPEN INSCRIPTION STILL NOT ILLUMINATED. ENG 1 AIR INLET VALVE OPEN INSCRIPTION ILLUMINATED IN NON-ICING WITH OVERRIDE KNOB IN AUTO. PERFORMED OPS TEST OF ENG 1 ANTI/ICE VALVE IAW AMM 30-00-00. OPS TEST NORMAL. NO FAULTS NOTED. A/C OK FOR SERVICE. R/R #2 ANTI ICE VALVE IAW EMB 145 AMM 30-21-01. OPS CHECK REQUIRED. MEL REMAINS OPEN. PREFORMED OPS CHECK IAW AMM EMB 145 30-00-00. OPS CHECK GOOD.