Hi, I really need help, our Voltech ISC3040 has a E5 code on the dial, operating book goes to E4.
The 2x170 watts solar panels linked with 2x100 amp batteries has been working great since October 2016 but yesterday when I was up the caravan to my horror this message was on the screen.
The batteries are holding 12.6 volts but was earlier in the day, solar was pumping in 13.4 volts.
Can any one for warn me what the problem may be please.
-- Edited by Radar on Tuesday 7th of May 2019 06:52:14 AM