LED blinking in RED

My Cloud OS 3 Personal & Network Attached Storage My Cloud
1

My Cloud 3TB WDBCTL0030HWT-10, when conect LED blink Blue, then blinking in RED.
please, your help.

2

If you haven’t done so already, use the forum search feature (magnifying glass icon top right) and search for blinking red LED. Lots of past discussions about what others have done to try and deal with it. If one reads the v2.x OS3 User Manual for the single bay My Cloud they’ll see it indicates the following:

Attention
Red Blinking The following circumstances trigger this state:
• Disk thermal warning threshold exceeded (under or over temp)
• Ethernet cable not connected

Fault/action required
Red Blinking The following faults trigger this state:
• Disk SMART failure
• Data volume does not exist
• System volume does not exist
• System thermal shutdown (75 C)

And if one hasn’t already done so, see the Knowledge Base link at the top of the page and search for My Cloud red LED, they’ll get the following WD Support article.

Solid and Blinking Red Power and Drive LED Status on a My Cloud
https://support-en.wd.com/app/answers/detail/a_id/24755