Do you have no 120-volt AC power inside your RV? If you suspect the automatic transfer switch is the problem, this guide will walk you through diagnosing a Progressive Dynamics PD52V transfer switch from start to finish.

Although this troubleshooting process applies to most RV automatic transfer switches, be aware that units with a built-in surge protector may intentionally block power if they detect an incoming power problem. Before condemning the transfer switch, always verify that the correct voltage is present at the incoming power source and that there are no pedestal, generator, or wiring issues.

By following this step-by-step guide, you’ll learn how to safely verify power through the transfer switch and accurately determine whether the switch has failed or the issue lies elsewhere in the electrical system.

Need to see how we replace this transfer switch? Click here!