Tony Hwang wrote, on Sat, 20 Dec 2014 19:41:51 -0700:

I believe it is code 33. I am pretty sure.

I found where to get manuals but I can't find the exact model:
http://www.bryant.com/apps/finddocs/form.jsp?b=b

The model is a Bryant 373LAV024070 (AGJA).
https://c4.staticflickr.com/8/7568/1...8fa24051_b.jpg

The closest Bryant PDF manual I can find is:
373LAV 376CAV Downflow/Horizontal and 383KAV 395CAV Upflow Gas Furnace
http://dms.hvacpartners.com//docs/10...0B/OM04-35.pdf

383KAV Upflow Gas Furnace 373LAV Downflow Horizontal Gas Furnace
http://dms.hvacpartners.com//docs/10...83_373-005.pdf

I'll call Bryant on Monday to figure out why I can't find the
exact model in the lists of documents:
800-428-4326 from 5:00am-2:00pm (Pacific) weekdays.