Dear Team ,

Just a week back i purchased DECO M9 PLUS AC 2200 Wifi Kit and installed 

below is my setup : interner provider -->  Internet Router --> Deco Main (Ethernet Wired) --> 1st Deco ( Ethenet Cable) + 2nd Deco ( Ethernet Cable) 

All the 3 Ethernet Cables are connected to Internet Router and moved to respectice floors and where these cables are connected to DECO's 

All my devices are connected to Decos 

since two  days the 2nd  Deco very frequently blinking RED  

I tried unplug the Router and then unplug all the Decos and after 5 min ..switch on the Router and Decos .. Then all the decos are working but after somtime the 2nd  DECO falls apart ( showing RED) 

I tested the Ethernet cable but it is working ( Internet is coming ) but when plugged into DECO it is still RED 

Could you please let me know what could be the problem and how can this ve tested / rectified ?

Thanks

Kiran