early this morning a storm popped up, lots of rain but we saw a very close strike and it did not affect anything in the house. went to church and it was picnic Sunday so about 3 pm before we returned home. the ac was running on the camper with water dripping on driveway. about 5 pm the wife was taking the dog for a walk and came back in the house and said the furnace was running.Opened the camper and they were both on and the thermostat was flashing E4. i turned it off but it kept running turned the circuit breaker off and the ac quit but the furnace continued to run. i then pulled the fuse for furnace and shut propane off. any one have a clue what would get it going. it also knocked the ac in the garage out and the lawn pump, which after reset for breaker for lawn pump and reset on the cord for ac they are alright.