Responded to no-heat call for 4-year-old furnace with reported flashing red light and ignition issues. Upon arrival, furnace was operating normally. Performed comprehensive diagnostic testing using Fluke 365 True RMS Clamp Meter on electrical components and inspected ignition system. Checked pressure switch, hot surface ignitor, and gas valve functionality. Examined blower motor assembly and verified proper gas line connections. Cleaned and replaced air filter to ensure optimal airflow. No immediate concerns identified; system functioning properly at completion of service.
