I have a 2018 Shockwave 5th wheel, with a Go Power solar system. About one month ago, I had to replace my batteries because they did not seem to hold a charge, by morning the batteries would be almost dead from very moderate use of lights and water pump. I have never been able to run the heater at night, very moderately, without completely killing the batteries before morning. I choose to convert to 6v batteries wired in a series. It is at this point I noticed some electrical problems, though I had some electrical problems were addressed under warranty.
The first thing I noticed is my batteries would not charge to 100%, after being hooked up to shore power for a couple of days. I was checking at the Go Power control panel, while hooked up to shore power, when someone turned on a hair dryer. My battery levels began to drop quickly, indicating that my Go Power inverter was powering the hair dryer. After lots of research I found that, from the factory, my inverter had been set to run the 120v outlets all the time, probably why my batteries were shot so quickly. I turned the switch at the top of my inverter from โIโ to โIIโ. The online Go Power manuel said it should be set to โIIโ when there is a remote control panel in the RV. That seemed resolved the issue of my inverter always powering some outlets.
Next issue I notice, my Go Power control panel says the batteries are sitting at 13.8v, but when I put a meter on the batteries they are now reading 18v. I am assuming I am having an issue with my converter and I also notice that my converter fan is not running when I plug in shore power. I was not able to deal with the issue for a few days and when I come back, the batteries seemed to have returned to normal voltage, so I did not think anything more about it.
Fast forward a month and we are going camping for the weekend. The 5th wheel has been hooked to shore power, the refrigerator is cold, and everything is fine, until I unplug from shore power. At that point all 12v items powered by my fuse panel go dead. I can still use my leveling jacks and start my generator. Starting my generator will re-power my 12v system. I do a complete search for a possible blown fuse. The circuit breaker going from the battery to the panel is good and there is power on both sides of the circuit break, but there is no power at the panel. I cannot see where the positive power wire goes after leaving the circuit breaker, there is no access to the wire from the circuit breaker to where it comes into the panel. I do not know if it goes to the inverter first. I pulled my converter and I can see that it does not go to the converter, so it is not running through the converter. Which should eliminate the converter from being the problem. I have checked my battery cut off switch and it is open and also providing 13.5v on both sides, prior to the circuit breaker.
I know this is a long question, but I have been pretty thorough with my diagnostics. My issue is I have no experience with inverters, this is my first RV with one. Any suggestions or ideas would be greatly appreciated.
