As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BLD #1 FAIL IN FLT.AT FL220 WE DID QRH REST PROCEDURES. BLEED 1 FAIL MESSAGE WENT OFF FOR APROX. 5 MIN THEN CAME BACK ON. EMERGENCY DECLARED. CONT TO ORD-C/A-RAR ENGINE #1 NACELLE PRESSURE REGULATING SHUTOFF VALVES IAW EMBRAER 175 AMM 36-11-03 OPS CHECK GOOD