Locate the A/C wiring to the heater and disconnect.
Check the element for continuity with the volt ohm-meter.
Replace the element if it is burned out by disconnecting the element and unscrewing the four screws holding it in.
Use the special heating element tool if it is the other type of element that requires a special removal kit. These are sold at RV supply stores and vary based on models.
Replace the element and screw back in.
