Today I came to Dave’s Altadore home because the furnace has been running intermittently in the morning for the past week or so. Dave has explained that the furnace cones on in the morning but only for a few minutes then shuts off. The system has to be reset, then the furnace runs the rest of the day without issue. Because the furnace has not been tubed up since it’s o=installation almost 2 years ago, we decided to perform a tune up today. Furnace tube up: Upon tune up and inspection of the almost 2 year old system I tested and adjusted the gas valve, burners, gas pressure and temperature rise. Pulled and cleaned the flame sensor. Tested ignition system, inducing motor and assembly, blower motor and assembly, heat exchanger, static pressures, tested and tightened all electrical connections, all safety switches and control board. The furnace is in excellent condition. The flame sensor had a low reading which can account for the intermittent heat especially in the morning after been o