Originally Posted by A32Deuce
You have to check to see if the converter is putting out or if you blew the fuses for it. All of the 12volt could be checked with a volt meter/ohm meter to make sure no shorts.
Originally Posted by bikendan
Are you sure you didn't cross the battery wires, when you put the new battery in?
If you hook the battery wires up wrong, it will blow the reverse polarity fuses to the converter, which is a design feature to keep you from damaging the converter. Many people do this, especially in the RV's that have white and black battery wires. The black goes to the positive side of the battery, which confuses many people.
If you have black and red battery wires, then the black goes to the negative. See how confusing that can be.
If the reverse polarity fuses are blown, then the converter is not providing power to the 12 volt DC items in your RV, but the battery is powering them. (lights, pumps, fans, t-stats, etc). Since the converter is also the battery recharger too, then the battery has no way of being recharged when hooked to 120 volt AC.
Let me edit this thread with several thread/posts links that will help explain this:
(Read this whole first linked thread)
No 12 volt or hvac
No Power going into camper
Avenger Circuit Breaker
No Lights or 12V power