Forum Discussion
cannesdo
Jul 13, 2014Explorer
Put in new batteries today. Still can't run the A/C or the ceiling fans or turn on 12v lights. Was able to check a few things though.
Here's what I know. I posted a link to the schematic above....
The power comes into the rig, passes through the main panel, goes to the converter/inverter combo unit...The inverter sends it back to the sub-panel and the converter (if I understand this correctly) send it to the wire connections in the upper left of the schematic, which I found down by the inverter in the basement. The wires are secure. They all light up with the fuse-checker -- but -- everything listed except for jacks are not working (slide-outs not working -- which doesn't make sense since the fuse-checker is lighting up for all of those connections. From there the current goes to the fusebox but none of the fuses are lighting up with the fuse checker (none are fried).
No signs of any mice in the basement. No mouse poop. Dust looks undisturbed.
The inverter/converter has a light that comes on and it makes a sound. The light is associate with the "charge/gel" function.
The 300 amp fuse (on the schematic, but it looks like it's actually a 150 amp fuse in my rig) looks fine. It's concealed under a plastic shield -- that's it -- yes?
The battery power is looking good on the panel but the panel that shows the battery/gray water/fresh water/black water isn't showing anything because, I think that panel requires 12v power to work.
What I don't understand. The fridge requires 12v power to work and it's working. Why would that be working and not the A/C and the ceiling fans (and 12v lights)? Oh, it has its own fuse right there near that connection panel in the basement (upper left of schematic) -- yes? Maybe that's the difference.
So what are the current possibilities? Seems like it couldn't be the converter because it sounds like it's charging, the light shows it charging and the fuse-check is lighting up for the connections next down the line. And the fridge is working. It seems like it's something at that panel in the upper left of the schamatic or at the fuse panel. Should I pull off the fuse panel and look behind it?
Any thoughts? Thanks so much....
Here's what I know. I posted a link to the schematic above....
The power comes into the rig, passes through the main panel, goes to the converter/inverter combo unit...The inverter sends it back to the sub-panel and the converter (if I understand this correctly) send it to the wire connections in the upper left of the schematic, which I found down by the inverter in the basement. The wires are secure. They all light up with the fuse-checker -- but -- everything listed except for jacks are not working (slide-outs not working -- which doesn't make sense since the fuse-checker is lighting up for all of those connections. From there the current goes to the fusebox but none of the fuses are lighting up with the fuse checker (none are fried).
No signs of any mice in the basement. No mouse poop. Dust looks undisturbed.
The inverter/converter has a light that comes on and it makes a sound. The light is associate with the "charge/gel" function.
The 300 amp fuse (on the schematic, but it looks like it's actually a 150 amp fuse in my rig) looks fine. It's concealed under a plastic shield -- that's it -- yes?
The battery power is looking good on the panel but the panel that shows the battery/gray water/fresh water/black water isn't showing anything because, I think that panel requires 12v power to work.
What I don't understand. The fridge requires 12v power to work and it's working. Why would that be working and not the A/C and the ceiling fans (and 12v lights)? Oh, it has its own fuse right there near that connection panel in the basement (upper left of schematic) -- yes? Maybe that's the difference.
So what are the current possibilities? Seems like it couldn't be the converter because it sounds like it's charging, the light shows it charging and the fuse-check is lighting up for the connections next down the line. And the fridge is working. It seems like it's something at that panel in the upper left of the schamatic or at the fuse panel. Should I pull off the fuse panel and look behind it?
Any thoughts? Thanks so much....
About Technical Issues
Having RV issues? Connect with others who have been in your shoes.24,370 PostsLatest Activity: Mar 18, 2026
Related Content
- Feb 01, 2026Community Alumni