How to Reset a Coleman 7900 Series Gas Furnace

Coleman 7900 series gas furnaces do not require owners to light the pilot light with a flame. There is not a lot of other work that you should need to do with the furnace aside from changing the filter from time to time. However, if there is a problem, you can reset the furnace to decrease the likelihood that a temporary setback becomes a permanent problem.

Step 1

Set the thermostat to the "Off" position.

Step 2

Open the breaker box and flip the switch that controls the furnace to "Off."

Step 3

Lift up on the upper door panel to remove it.

Step 4

Slide the gas valve control switch to the "Off" position.

Step 5

Wait five minutes for gas to clear out of the system. Smell to make sure there is no gas present before moving on to the next step.

Step 6

Slide the gas control switch to the "On" position.

Step 7

Place the upper door back into place.

Step 8

Slide the switch in the breaker box back to the "On" position.

Step 9

Set the thermostat to the appropriate setting.