Complete 1 System Amana 90% Gas Furnace: EPA Heating Maintenance: cycled system. Checked tstat and air filter. Checked electrical connections. Checked blower motor amp draws. Inspected evap coil. No CO detected. Burners are clean. Cleaned Flame sensor. Checked amparage on draft motor. All safety switches are on great condition. Checked draft motor. System is running great at this time.