Complete 1 System 2 Zones Coleman 80% Gas Furnace: AHS Heating Maintenance: Checked tstat and air filter. Checked motor dampers and made sure theybwere working properly. Checked Blower Motor amp draw. Checked electrical connections. No CO detected. Burners are clean. Cleaned flame sensor. Checked amparage on draft motor. All safety switches are on great condition. System is running great at this time.