Profile: HP Printer Service Error Code 49 is a firmware communication error that is usually displayed on the control panel of your printer. This sort of error is of two types; Intermittent 49 errors, which are not very frequent and often occur about once a week, and Persistent 49 errors, which occur more frequently and can permanently damage your HP Printer. If you find that you keep getting messages indicating HP Printer Service Error Code 49 you can call the HP Printer Customer Service and speak to a certified professional to find out how you can resolve the issue.