I was a patient man with my gas detectors but not anymore.

I was in a class c and found that occasionally the propane alarm would go off. Once a week usually in the early morning. After getting home,we did a point by point check out of the entire system and found a cracked compression joint under the RV. During no wind situations enough gas would accumulate to trip the sensor. Nuisance alarms have to be considered real till proven otherwise. Valving in the tank to prevent alarms indicates something.......