Caravan Solar Panel Faults

My roof mounted solar panel system normally shows around 13.
Caravan solar panel faults. As a result we have compiled a list of things you can check yourself. Most new caravans motorhomes and to some extent campers have solar panels mounted on the roof or other flat surface. If you feel there is something wrong with your solar panel system perhaps the batteries are going flat too quickly or you are not getting the usual readings from your charge controller display this guide will help. It s also possible that one solar panel in your pv array failed.
Zero output is a common problem and in nine out of ten cases it is due to a faulty inverter or charge controller. If you disconnect a battery without disconnecting the solar input first the regulator may think a fault has occured. 5v at the caravan volt meter although the controller supplied with the kit is supposed to be protected for all sorts of stuff i thought it might be prudent to fit a fuse between the panel and controller mainly for a. I was told to cover my solar with a sheet if the battery was removed as the controller goes into error.
Happy new year all. As the pv modules are connected in series one failing pv module will shut down the entire system.