ERJ170 captain experiences a pressurization anomaly passing FL210 and stops at FL220 to perform QRH ...

Narrative:

While climbing out around FL210 we got an EICAS message presn auto fail. We requested to stop the climb at FL220. I ran the associated QRH procedure and was unable to reset the auto function. A few minutes later we received the presn man fail message as well. I ran the associated QRH procedure and requested 10;000 ft from ATC. We descended quickly to 10;000 and the cabin never climbed above 8000 ft. I was able to raise dispatch and after talking to dispatch and maintenance control I elected to continue to destination at 10;000 ft with pack 2 on and pack 1 off. The cabin was fairly stable at about 5000 ft for most of our time at 10;000 but we were unable to control it and had the ability to turn off the packs if it went crazy.as we approached our destination; ATC tried to vector us out several times and I repeatedly told them we were tight on fuel. We did not declare minimum fuel because we were still showing landing over 3000 pounds; but we wanted to know what their plan with us was so that we could continue to monitor our fuel situation. The packs were turned off as we descended from 10;000 ft and the approach and landing were uneventful except for the cabin temperature rising. I believe our companies maintenance procedures of simply powering down the aircraft powering it back up and ops checking items is unwise. And this may have contributed to this failure.

Original NASA ASRS Text

Title: ERJ170 Captain experiences a pressurization anomaly passing FL210 and stops at FL220 to perform QRH procedures. With Presn Auto Fail; manual is selected but also fails. The flight descends to 10;000 feet for the remainder of the flight to destination airport.

Narrative: While climbing out around FL210 we got an EICAS message Presn Auto Fail. We requested to stop the climb at FL220. I ran the associated QRH Procedure and was unable to reset the Auto Function. A few minutes later we received the Presn Man Fail message as well. I ran the associated QRH Procedure and requested 10;000 FT from ATC. We descended quickly to 10;000 and the cabin never climbed above 8000 ft. I was able to raise Dispatch and after talking to Dispatch and Maintenance Control I elected to continue to destination at 10;000 FT with Pack 2 on and Pack 1 off. The Cabin was fairly stable at about 5000 FT for most of our time at 10;000 but we were unable to control it and had the ability to turn off the packs if it went crazy.As we approached our destination; ATC tried to vector us out several times and I repeatedly told them we were tight on fuel. We did not declare minimum fuel because we were still showing landing over 3000 LBS; but we wanted to know what their plan with us was so that we could continue to monitor our fuel situation. The Packs were turned off as we descended from 10;000 FT and the approach and landing were uneventful except for the Cabin Temperature Rising. I believe our companies Maintenance procedures of simply powering down the aircraft powering it back up and ops checking items is unwise. And this may have contributed to this failure.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

Attributes
ACN	1254918
Time
Date	201504
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Make Model Name	EMB ERJ 170/175 ER/LR
Operating Under FAR Part	Part 121
Flight Phase	Climb
Flight Plan	IFR
Component
Aircraft Component	Pressurization Control System
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	ATC Issue All Types Aircraft Equipment Problem Less Severe Inflight Event / Encounter Fuel Issue

ERJ170 captain experiences a pressurization anomaly passing FL210 and stops at FL220 to perform QRH procedures. With presn auto fail; manual is selected but also fails. The flight descends to 10;000 feet for the remainder of the flight to destination airport.