Hi a90s2cs, 
      There is something seriously wrong with your controller, your 35amp controller 5000/48= 104 amps. 
If this is correct, as previously mentioned, the battery bms is shutting down for safety.  You need to contact the company that you bought the controller from.
I fitted a 35a controller to my wife's RR+ and I works like a dream,  C5 set 5.
             Good luck
                     Andrew