Hey Ray,

First, remove the battery. Try the air conditioner and microwave and see
what happens.

Next,  replace the battery. There could be a short in the battery that may
cause problems. The ceiling lights (most likely are 12v) work off of the
battery and/or converter (if equipped).

Finally, if the problem continues, take to RV repair.

Halon

Hi,
The air conditioner runs on AC current.  The lights run on 12V.  If
you don't have a converter/charger to charge the battery and run the
12V items when hooked to shore power then you are running everything
off of the battery.  If the battery was dead he would have no 12V
lights.  But he would have 110V AC if he was plugged into shore power.
So no lights but he had air conditioning.  He kicked all the power off
because he had the air conditioner running and tried to start the
microwave which overloaded the circuit.  He was probably was on a 20
amp circuit.

The only problem I see is the dead battery.   If you have a converter
charger then I would be looking at why it was not charging the
battery.  Fuse blown is a possibility, really dead bad battery is
another.  If you don't have a converter charger you need to get a
battery charger to charge the battery and take it with you.

Take care and Happy Campin...
RichA
"We Get Too Soon Olde and Too Late Smart"

There is a switch below the swing galley.  It cuts the 12V supply to the lights
when the galley is stowed for safety reasons. After a few years the galley base
on my '99 Westlake bowed/warped so the switch no longer engaged. A piece of
cardboard over the switch when the galley was raised fixed it temporarily; a 1 x
2" firring brace glued to the outside wall inside the base fixed it permanently.

You likely exceeded 15 amps with the A/C and microwave together, and tripped the
breaker.
I connect my A/C directly to the 30 amp campground supply, and run the rest of
the electrical off the 15 amp supply.

I agree with what everone here has said concerning running the AC and a
microwave at the same time (especially if both on the same circuit), however
there is one thing more to check concerning your 12v ceiling lights.

Underneath the flip-down front panel of your converter is a small switch
that lets you run your 12v equipment either off of the battery or from the
converter.  If the switch is in the "battery" position and your battery is
dead then of course your lights won't work.  Check it and if needed move to
the "converter" position when you are on shore power and your lights should
come on.

Cheers - Jonathan