Had a Goodman furnace model # GM 80903 BN installed a year ago, right from the start, the problem started with the burner not igniting when the blower moter is running continuously. I have to have the motor running continuously for the particular model of air-cleaner I have to work properly. So when the temp. drops the blower motor is running but the burner does not come on. When I have the thermostat switch set on "auto" the furnace switches on and off properly in accordance with the temp. setting.
The contractor says its not to do with the new therma-stat that was installed with the furnace, they have adjusted the gas flow and checked gas pressures levels and say it is o.k. but still problem goes on. Now they won't do anything more.
Can anyone suggest anything so I don't have to get up every 2 hours all night long to turn the heat on.