power, help

Bill,

With no clue what the subject RV is, lets try to get around that.

You say that the line power stuff works on line power, the battery stuff works when you have no line power, but not when you do.

If that is correct, look at you converter/charger. It may be a unit that is so old that it had separate converter and charger sections and when it had line power, it would switch the house demand from the house battery so that did not interfere with charging the house bank.

It could be that the part that is supposed to supply the house power when not on battery is dead. It could be either the power supply circuit itself, or the contactor. If you power surge was enough to damage things, I would bet on the house power supply.

Matt

Cycle your battery disconnect on/off - also look for a auto reset circuit breaker which should be close to the house battery. If the auto reset goes toes up it essentially disconnects the batteries from the rig.

Check the output of the converter. Use a meter.

Everything but AC and microwave will be 12VDC. So start checking fuses.

Your missing 12V. DO you have a battery disconnect? If not the disconnect, you need to check the 12V side of your RV.