What steps should I take if my Lennox system is not working?

If a Lennox system is not functioning properly, there are several steps that you can take to troubleshoot the issue before seeking professional assistance. First, ensure that the thermostat is set to the desired temperature and that the settings are correct. It may also be helpful to check the power supply to the unit; ensure that it is plugged in and that any circuit breakers have not tripped. Next, inspect the air filter. A clogged or dirty filter can restrict airflow and cause the system to malfunction. If the filter appears dirty, it should be replaced or cleaned according to Martin's user manual guidelines. Additionally, examine the outdoor unit to ensure it is clear of debris, such as leaves or snow, which could obstruct airflow. If the system is a heat pump, ensure that the unit is not covered in ice, as this may indicate a problem. If these steps do not resolve the issue, it may be prudent to check for error codes displayed on the thermostat or service panel. These codes can provide insight into specific problems that the system may be experiencing. For more detailed troubleshooting or if you are uncomfortable performing these tasks, it is advisable to consult the owner's manual for guidance or visit the Lennox website for additional resources, including contact information for certified service professionals.