Another adventure with my Alpine Coach. We were out at Cuyamaca Rancho State Park hosting the annual family camping trip (20 attendees). I started the generator and after the delay, I heard the relay clunk but no power transfer. After checking the gen set circuit breaker (it was ok--not tripped), I shut down at re-started with the same result. However, this time I noticed the display panel for the RV Surge Monitor saying "Open Ground".
After some discussion with my brother-in-law (an engineer) we decided to check out the mysterious black box called the Transfer Switch. After removing the side inspection plate (gen set OFF), a flashlight inspection revealed a disconnected ground wire on the output side. The copper conductor had come loose from the connector. We wiggled the wire back to the connector and tightened the screw. Re-starting the generator all worked as it should with no error messages and plenty of AC power.
I'm sure I saved many dollars in not having to replace a fully functional transfer switch whose only problem was a loose ground wire!