The reason I ask, we had a similar problem with a KZ travel trailer.
If the rain was falling right, or the wind was blowing right, or both, it would occasionally cause the water heater to lite, then go out, then light. Sometimes it would repeat a couple of times before it finally fired. This was enough to set off the propane detector. Never did really find a solution, except to trade it.
"I used to be disgusted, now I try to be amused."
2015 Sunseeker 3010ds