EMB ERJ 145 ER/LR
Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP)
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Provided Assistance; Flight Crew Took Evasive Action; Flight Crew Diverted; General Flight Cancelled / Delayed; General Maintenance Action
Aircraft
On our way to our assigned altitude of FL360; passing through FL280; the First Officer noticed the cabin altitude on the EICAS was in the amber range with a cabin altitude of about 8;500 ft. We leveled off at FL280. Shortly after; the cabin altitude increased rapidly into the red range. The red warning light illuminated along with the master aural warning; 'CABIN'. We ran the Rapid Cabin Depressurization checklist; [advised ATC] and descended to 10;000 ft. During our descent we ran the respective QRH checklist. After reaching 10;000 ft. the cabin altitude appeared to stabilize and go back into the green range. We diverted to ZZZ and made a safe landing with no injuries reported.
We were climbing when I noticed there was a strange smell on the cockpit about 15;000 ft. I reported to the Captain just to confirm I was not the only one who smelled it ; the Captain told me it could be his food or even mine; so I agreed. It seems logical to me; so I continued to monitor the flight instruments While were climbing to our assigned an altitude of FL360 I noticed that about FL280 the cabin altitude was very high; about 9;000 ft. I advised the Captain and he also concurred that it was very strange. We talk to ATC to level off at that altitude and about 30 seconds later it went to 9;300 ft. and depicted amber and then went to red given us the cabin altitude warning. We proceeded to [advise ATC] and did the rapid cabin depressurization QRH and requested an altitude of 10;000 ft. We began a descent while we were doing the QRH. Once the situation was under control we contacted Dispatch and proceeded to divert to ZZZ.
ERJ145 flight crew reported a loss of pressurization during climb that resulted in a diversion.