Our dryer runs but won't heat. Also, the inside bulb does not turn on when the front door is opened. I believe the two problems appeared simultaneously.

Kenmore Model #: 110.76902690 Equipped for natural gas.

The instruction on the dryer says "240 Volt dryer operates on two fuses in the main box. Are fuses blown? Replace or tighten."

Is it referring to the main fuse box for the house or internal fuses within the dryer?
If the fuse is blown on the main box of the house then the dryer should not run in the first place, right?

Any help would be appreciated.

Rd

The dryer will run if one of the fuses is blown or if one leg of the circuit breaker is tripped.
The fuses mentioned in the owners/operators manual are the ones for the residence not inside the dryer.