Is it an atwood or a Suburan?
Most Atwoods use a common control board and T-stats for both Gas and electric, It is possible this has failed protecting your element.
It should fire on gas even if the unit was fired empty.. But the unit may have bene otherwise damaged.
I'd slap a volt meter or test lamp across the elemnet (on atwood this is normally on the plumbing side of the tankk, look for the relay box) and see if power is being sent to the element, If not, the element may be good, if yes, use a clamp on current meter (Ammeter) over one of the element leads (just one) and look for power draw.. If zero element is bad.
