!
error HP
Error Code Printhead icons flashing (one or both)
One of the printheads is missing, installed incorrectly or damaged.
? What Causes This
Incorrect installation of printheads or usage with incompatible ones.
✓ How to Fix It
Check that no plugs or protective tape are present on any of the printheads. Reinsert accordingly if necessary.
Source: page 50 of the official manual
From the manual
