Bruce, apples and oranges are being mixed up here because it sounds like your responses and your posts are talking about different systems.

Apparently some alarm or locking systems which use the key fob engage the air lock because that seems to be what you are describing. If your key fob does engage the air lock as it sounds you need to get to the bottom of what it takes to disable the air lock.

You are also apparently mixing up house and chassis systems. The air lock is almost always a Prevost feature and it is powered by aux air and controlled by a chassis powered solenoid valve. Your description of the situation however leads me to believe your converter made that lock a part of the alarm/locking system so there is likely crossover between the house and chassis.

Generally, when we have a key fob type locking system or a key pad locking system or a combination of the two it is a house powered system, and it actuates the deadbolt. This system is unaffected by the removal of power to it and the only way to unlock the deadbolt is to use the key in the door, use the key fob, or to gain access to the coach and release the deadbolt from the inside by pushing a button or turning the small knob on the door.

If your air lock is part of the house and part of the chassis you need to understand clearly what you are dealing with because neither Prevost, POG members and possibly your converter are going to understand that you have something weird. The advice you have already been given in this thread by POG members and by Prevost have been correct relative to what is a normal locking arrangement.