Please help, I have a 100/50 charge controller, with 600watts of solar connected to 2x200ah batteries. Entire system worked perfectly for 4 weeks, now suddenly the charge controller will not go into bulk mode to change batteries, it is starting in absorbtion mode. Batteries are at 71%, I disconnected everything, reconnected, reconnected, it goes into bulk for 1 second then right back into absorbtion mode