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error HP

Error Code LED blinking and one Ink Alert light is blinking

The corresponding ink cartridge is incompatible, damaged, or incorrectly installed.

? What Causes This

Ink cartridge issues due to compatibility problems, physical damage, or improper installation.

How to Fix It

Remove the ink cartridge and reinsert it properly after checking for correct model and removal of any plastic tape if present.

Source: page 6 of the official manual

From the manual

Manual page 6 — HP error LED blinking and one Ink Alert light is blinking

This error code appears in:

HP Deskjet Ink Advantage 2135 All IN One Printer