RV Repair: rv electrical, invertor, souce

Question
I have a 1994 ford motor home ,with a generator also plugs in to 120v all lights ,pump ,microwave ect. works. when plugged in or running generator, but does not work on the house batt. 12v power. Please help .

Answer
Check your invertor, make sure it is in working order and the fuses on the front panal are all good. It sounds to me like this could be the souce of your problems, The only other thing that it could really be is the circuit breaker or the battery disconnect is not working right. check that out first.