The fridge may have been looking for the propane which was off. First and least expensive check is the circuit breaker box. You may have loose or broken breakers. Vibration or bumps may loosen the breakers or wires. Each breaker has a "hook" end and a slot end.The hook end will have a wire attached to it.
1-TURN OFF THE A/C by unplugging the unit.
2-Remove the cover on the circuit breaker box.Usually 4 screws on the face of the
box.
3-Gently push on each breaker where it contacts the bus bar, the slot end. You
should feel it bottom contact the bus bar. Look for cracked or broken breakers.
4-Tighten any loose wires on the breakers. DO NOT OVERTIGHTEN. The circuit breaker
Will crack..
5-Replace the cover on the box. Tighten the screws evenly. The cover holds the breakers in place. You may have to move the breakers a bit as you reinstall the cover.
Turn all the breakers off and plug the A/C cord in. Turn the breaker on one at a time.if the problem persists change the breaker for an exact match or one with the same specs They do wear out. Bring the old breaker with you to the store All breakers have the specs on them. Look closely on the sides.