Electrical issues

[USAFRet94]

I have a 2007 Holiday Rambler Ambassador and am having issues with both the 12 volt DC and 115 Volt AC circuits. The unit was in the shop for several months getting a new floor and having some body work done. When got it back the chassis electrics worked but, nothing else. The inverter charger has a fault light on saying check battery temp & batteries (house) overcharged. All house and chassis batteries are new and all are fully charged. The 12 volt battery switch will not stay engaged. Hooking up to shore power makes no difference and the generator will not start. All fuses and circuit breakers are fine. If, the inverter charger is bad will it keep the entire chassis system from operating? Is their anyway to bypass it to get the lights and generator to work?Trying to get an idea on where to start. Thanks for any suggestions

[BFL13]

ISTR inverter-chargers require 12v to work at all, unlike converters which can work with only 120v.

OP says he is getting fault signals from his I/C, so he is getting 12v to the I/C if that is correct. Where from?

The shop screwed up (assuming they also put in the new batteries), so they should fix it.

[joelc]

Agree with above. Something happened during the work, if the problem did not pre-exist. Cut, pinched or unhooked wire. Do you have anything working off of 12V? Disconnect your shore 120V when testing. Lights, pump, CO monitor, slides.....

[Acampingwewillg]

I hate to even add this BUT, after working on my floor(replacing it in many places), there is a Large amount of both low volt and high volt electrical running in grooving under the floor. I was very careful taking my time removing and replacing but I could imagine a disaster happening if you cut thru something you shouldn't. I Hope this is Not the case! Good Luck....

[CA_Traveler]

BTW A $10 voltmeter can really be helpful to find the issue.

[enblethen]

First guess is batteries not connected correctly.
Check for fuse in 12 volt DC feeding the inverter.

[CA_Traveler]

Maybe the shop disconnected the house battery? Some of your AC appliances may require DC to operate hence fixing the DC may solve all of the issues. Some chargers will not charge a dead house battery so load test it to be sure it's OK.

You can use another charger to maintain the house batteries.

[Flute_Man]

My initial thought was that the batteries are bad or they got hooked up wrong when they were replaced.
I might be able to help you some over the phone so give me a call whenever you can.

[midnightsadie]

I,d start at the batteries double check things are right.