!!
critical HP
Error Code Edge lighting fast blinks amber
There is a serious printer error. All LEDs on the printer fast blink.
? What Causes This
Critical hardware malfunction or software conflict in operation modes.
✓ How to Fix It
Turn the printer off and then on again to resolve the issue, if that does not address it then contact service for repair.
Source: page 8 of the official manual
From the manual
This error code appears in:
HP Envy 6000e All-in-One Printer