Even though the User Manual for the WD My Cloud has no description or reference to a Orange / Yellow LED … it Definately does Have One. Have seen it several times.
Just tested it now with my 2TB WD My Cloud … if i disconnect the Ethernet Cable connected to it and then wait a few seconds and plug it back in … The Front LED Blnks Orange / Yellow (NOT RED as stated in the My Cloud User Manual) several times and then returns to normal … Blue
The Blinking Orange / Yellow LED Indicates in my Test … “Network Cable Not Inserted”
A Solide Orange / Yellow LED Indicates … “Drive has begun Loading the Operating System (OS)”
I think i recall having a Solid Orange / Yellow LED after an Electrical Storm Blackout … and when the power was restored the Solid Orange / Yello LED took a long time to disappear … can’t recall, but it may have been 10 minutes.
Anyways, just because the My Cloud User Manual does not state the Orange / Yellow LED … does not mean it does not exist.
And i have seen a number of errors and omissions in WD Manuals over the years.
And the User Manual Stating that RED LED is “Attention” Status … is Incorrect.
I have NEVER seen a RED LED in the years i’ve had My My Cloud … just as well, because that’s Severe Fault / Problem.
I’ve had solid orange for a few weeks but not looked into till now , spotted your post , i had my iphone App at the ready it was on this i was trying to look at some stored photo’s i first realised it wasnt working , Log on to App on your phone it will obviously say its offline , next take the ethernet cable out & then put back in again starts flashing orange , refresh the phone app ( pull down ) it should then say the WDMyCloud needs a Update mine did , Select your Device & download if it takes ages turn off thye App then back on or do it on your Mac , Laptop etc by signing in on one of those THIS should do it