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36v battery bank

Hooked up MakeSkyBlue V119 to my 36v battery bank and get E65 and fault. Any ideas on a fix? Have changed wiring, 8 awg from controller to breaker, 8 awg from breaker to batteries. Don't have solar panels hooked up yet. Will be running 10 awg from panels to disconnect and from disconnect to breaker and then controller. HELP, very frustrating.

Thanks,

Tim

please check the connections between the controller and battery bank.

Also what is the battery bank voltage at the post and the controller terminals?

 

Thanks

Sean

Sean,

39 volts at battery, 38.8 volts at controller

So, the controller is somehow thinking its a 48V bank and its showing E65.

ITs best to start the controller with a 36V bank voltage and leave the controller on..

Thanks

sean