How to Light a Miller Gas Furnace CMF80

1. Ensure the Gas Supply is On

Ensure the valve is fully open to allow gas to enter the furnace.

2. Locate the Furnace Control Panel

The control panel is usually on the front or side of the furnace.

3. Turn On the Power Switch

Switch on the power switch to supply electricity to the furnace.

4. Set the Thermostat to Heat Mode

Set your thermostat to heat mode and raise the temperature above the room's current temperature.

5. Set the Blower Switch to "ON"

Flip the blower switch to the "ON" position to start the blower fan.

6. Press and Hold the Reset Button

Locate the reset button on the furnace control panel and press and hold it for about 5 seconds.

7. Listen for Ignition

You should hear a clicking sound indicating the ignition process has started.

8. Observe the Pilot Light

Look for the pilot light window. After several ignition attempts, the pilot light should ignite and produce a small, steady flame.

9. Release the Reset Button

Once the pilot light is lit, release the reset button.

10. Test the Furnace Operation

Verify that the furnace is working correctly by adjusting the thermostat to a lower temperature and observing the blower fan turning off.

11. Set the Blower Switch to "AUTO"

Once you confirm the furnace is functioning, switch the blower to "AUTO" so it will turn off automatically when the thermostat is satisfied.

Remember to consult the specific furnace manual for your Miller CMF80 model for more accurate and detailed instructions related to lighting and operating your gas furnace.