Tested both zones individually for heat for 20-25 minutes each, both damper motors opened and closed as they should, inspected the burners, flame sensor and igniter for proper operation. Found an insect blocking the bottom section of the burner, removed the insect and cleaned the burner and flame sensor. Checked gas pressure and found it to be slightly high for what the manufacturer recommends, turned down the pressure from 3.8inWc to 3.5inWc. Damper motor for upstairs made a clicking noise once when the zone was tested, tech advised to monitor the upstairs airflow. Tested the system upon departure and both thermostats were satisfied on set point. Tech recommended our ESA(maintenance agreement plan) and decided to invest in yearly PSA. Bljones0529@gmail.com