Transfer a switch

[Cbsodeman]

We have a 2008 Tiffin Phaeton. We've been on AC power at my brothers for the last 4 days with no problems and now the transfer switch apparently is nit apparently is not switching back to the AC power it just shows me on inverter power murder power we have plenty of power to the coach does anybody have any ideas

 

[dan.hoeger]

not sure if this could be your issue but I ran into a similar problem where I was able to run everything off the generator and solar but my shore power wasn't working I thought it was the transfer switch but with a little checking with a volt meter and trying to switch the lines on the switch found out that one of the mains on the cord had come disconnected at the plug and I just had to take the plug apart and reconnect it. it's worth checking if you are still having this issue.