Turn the thermostat associated with the combination Miller Nordyne unit to the lowest temperature point.
Switch the unit power to “Off” and wait for a minute or two.
Move the unit power back to “On” and then increase the thermostat temperature to a point around five or 10 degrees higher than room temperature to light the pilot light.
Switch the thermostat to “Auto” and “Heat" for heating or "Auto" and "Cool" once the unit is running.
Turn the thermostat to the lowest possible temperature point and turn the unit to “Off.”
Open the unit access panel and turn the gas control knob to “Off.”
Stop and wait five minutes for gas to clear the gas lines.
Smell for gas and proceed if there is no gas smell. Push in and turn the gas knob to “On” and close the access panel on the unit.
Rotate the furnace power back to “On” and then increase the thermostat temperature to a point around five or 10 degrees higher than room temperature for heating. Turn the thermostat to "Cool" and set the temperature five to 10 degrees below the room temperature for cooling.