I believe this should be a repair that you cover since it came from the factory this way.
Rv automatic transfer switch not working.
Switches that have been damaged by chattering need to be returned to the factory for replacement.
Turn off the shore power and disable the automatic generator start so no power goes into the xfer switch until someone can check out the wiring that s burnt.
The generator shouldn t have a transfer switch but it should have some sort of output circuit breaker.
Sustained contact chattering can cause transfer switch damage.
The automatic transfer switch is not working because the screw was cross threaded and now needs to be replaced my extended warrenty will not cover because its a cross thread.
First thing to do is get a schematic by looking online or contacting generac directly.
If the voltage level drops far enough the contactor points will chatter.
Depending how long it takes to get repaired he may want to go out and purchase a battery charger to keep the house battery voltage up.
Sure your transfer switch will work most of the time while under a load but you are operating it outside of its design parameters.
The possibility of failure is high.
The automatic transfer switch is installed before the breaker panel.
The possibility of decreasing the life of the transfer switch is absolute.
Contactor based transfer switches are also affected by low voltage.