Genset should have fault code lights blinking...get manual out, if the fault lights are blinking, count them and look up the problem associated with the blinks.
Your propane tanks are full? Stove will light even with propane too low to run gen...
'16 40QBH Phaeton
'21 Sahara HA toad
'15 38RSSA Mobile Suites--traded
'05 36TK3 Mobile Suites--retired but not forgotten