Most problems with gas ranges have to do with the flame—either it isn't quite right or it's nonexistent. Many new gas ranges have "electronic ignition," a spark igniter that starts the flame as gas flows through the burners.

If, when you turn on a burner, it fails to spark but you hear sparking at other burners, the igniter or the burner switch probably needs replacement by an appliance repairperson. If your range has a pilot light, be sure the pilot light is lit.

If a burner doesn't work at all:

1) Be sure the circuit breaker serving the appliance is in the "On" position and that its fuse has not blown. Check both the main electrical panel and any secondary subpanels that supply power to the furnace or appliance. If necessary, reset the circuit breaker or replace the fuse. If the circuit blows again, there is probably a short in the electrical system. Call an electrician or furnace repair technician.

2) Be sure the appliance's switch is turned on and that the appliance is plugged in.

3) Be sure the appliance's power switch is turned on. This may be on the appliance or, in the case of a gas furnace, next to or inside the furnace cabinet. If it isn't on, turn it on and wait a few minutes.

4) Be sure the thermostat or heat dial is set properly.

5) If the appliance has a pilot light, be sure it's working.

6) If none of this works, call your gas utility or an appliance service technician.