Your TH uses an Atwood Water Heater.
IF 'electric' was turned on without water in WH Tank then element is burnt
BUT it could be as simple as a blown Fuse in DC Dist Panel, a blown 'thermal fuse' in outside compartment, a bad t--stat or a loose/corroded connection
You Atwood uses DC Power for BOTH functions (electric and propane)
So................does it operate on propane.
If NO...then you have other issue.
Do you have 12V DC power on Brown wire to t-stat with either electric or propane switch ON?
Is it time for your medication or mine?
2007 DODGE 3500 QC SRW 5.9L CTD In-Bed 'quiet gen'
2007 HitchHiker II 32.5 UKTG 2000W Xantex Inverter
US NAVY------USS Decatur DDG31