If it's a Suburban Brand...
In outside compartment there will be an ON/OFF switch in corner and there will be 2 reset buttons on rubber cover.
The electric element will be under a cover behind gas valve
If it's an Atwood Brand....
Control panel will have 2 switches
Electric element will be on backside (inside RV) under a cover
Doesn't the data sheet in cabinet/drawer list the various appliances etc.?