What is the most probable cause of erratic operation of all appliances after replacing a propane container appurtenance?

The most probable cause of erratic operation of all appliances after replacing a propane container appurtenance is related to the improper purging of the container. When a propane container is replaced and not adequately purged, air and other contaminants can remain in the system. This can lead to a mixture of propane and air, which creates varying combustion conditions, resulting in the erratic functioning of gas appliances.

Proper purging is crucial because it ensures that any moisture, air, or residual vapor is removed from the system, allowing for a consistent and stable propane supply to the appliances. If the purging process is neglected, the presence of air can disrupt the fuel-air mixture, leading to inconsistent heating, potential backfiring, or even safety hazards.

Understanding the significance of purging highlights the importance of following correct procedures during the installation of new appurtenances in propane systems, to ensure not only the efficiency of the appliances but also the overall safety of the system.