Driving I-95 yesterday, battery balance light started flashing then stayed on full time. Pulled in next rest stop. Checked all connections, all were tight and no signs of heat. Checked both Vannor's (chassis & house), chassis one was OK, house green led on Vannor was not lit and voltage reading were 27.1 & 14.3. Started generator, balance light went out, but Vannor still had same readings as noted.

Recently had all the house bank of batteries out to replace a R-14 relay valve. Check all the 4 year old batteries at that time, all but one checked OK. The one that was weak was still good but not as good as the others.
Do I have a bad Vannor or maybe that one battery is giving up. On the road an no time for in depth diagnosis right now. Not sure why running the generator makes the balance light go out but the voltage is still not within proper parameters.