Lennox 13GCS Installation Instructions
![Lennox 13GCS manual cover](/images/b85d58a06c2d08bd8b5025a6/thumbs/thumb175x175.webp)
To reset the filter reminder, press and hold the 'Filter Reset' button for 3 seconds until the indicator light turns off.
Ensure that the thermostat is set to the correct temperature, the air filter is clean, and the outdoor unit is free of debris.
It is recommended to perform maintenance at least twice a year, preferably in the spring and fall.
Turn off the unit, remove debris with a brush, and use a coil cleaner spray. Rinse with water and let it dry before restarting.
Check for loose parts, debris in the fan, or a failing motor. Tighten any loose components and remove debris.
Regularly clean or replace air filters, seal duct leaks, and ensure the thermostat is properly set.
Refer to the user manual for error codes. A blinking LED usually indicates a specific fault that needs troubleshooting.
Turn off the unit, locate the filter compartment, remove the old filter, and insert a new one with the airflow direction arrow pointing correctly.
Check if the condensate drain line is clogged or disconnected, and ensure the unit is level. Clean or reconnect as necessary.
Yes, a programmable thermostat can be installed to enhance comfort and efficiency. Follow installation guidelines in the thermostat manual.