For some reason, the 0606i has to be connected in a certain sequence or you get that error. My 1st 5s1p a123 pac I built - I kept getting the same error and thought I had put the balance harness on wrong - was the way I was trying to connect.

With the output leads plugged into the charger, turn the charger on. Connect balance tap, then connect the batt power leads to charger. Set charge parameters and start charging.