Once switched to 110v ac, you are not using the propane system and should not hear anymore clicking of the gas igniter. Double check that both tanks are not empty. It happens. Good advice the others have given If there is available propane, bleed the air out.
2010 Cedar Creek 5th Wheel 34SATS "The Beast"
2006 Ford F350 Lariat 6.0L Diesel
2003 Harley Heritage Softail "Hogzilla"
1986 Marriage to "Wifey" (patience of a saint)