ℹ
info HP
Status Blue LED off (wireless model)
The machine is disconnected from a wireless network or in ready mode; power off.
? What Causes This
Disconnection, shutdown, or ready state;
ⓘ What This Means
Check if expected status. If disconnection issue persists, reset the network settings or restart printer.
Source: page 43 of the official manual
From the manual
This error code appears in:
HP Samsung Xpress SL M2020 Laser Printer Series