On a narrowboat with a well installed system by a top boat builder in 2006.
If I power off the inverter/charger, when I switch it back on, lights flash very quickly (on then off) but the remote panel's lights (2 x vertical rows) light up sequentially right to left and this process continues. I resolved this the first time with a good old fashioned heavy knock to the main unit and it worked but cpild of course have been coincidental. Then this happened again a couple of days ago (I'd isolated the power to get inside the unit to check for the temp. lead). Whether coincidence or not I don't know, but a few swift turns of the heavy isolation lever for the inverter/charger supply resolved this.
Does this sequential light display on the remote indicate a an insufficient power supply issue?