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error HP

Error Code LED blinking with both Ink Alert lights blinking after install

There is an issue with installing or reinstalling cartridges.

? What Causes This

Problem detected during installation of new/used ink cartridges.

How to Fix It

Ensure proper installation, remove and replace if necessary for each cartridge ensuring contacts are clear of debris before attempting to use printer again.

Source: page 6 of the official manual

From the manual

Manual page 6 — HP error LED blinking with both Ink Alert lights blinking after install

This error code appears in:

HP Deskjet Ink Advantage 2135 All IN One Printer