Lennox HSXA19 Owner's Manual

To reset the Lennox HSXA19 air conditioner, turn off the thermostat and the circuit breaker for the unit. Wait for about 30 seconds, and then turn the circuit breaker and thermostat back on.
Regular maintenance tasks include cleaning or replacing the air filter every 1-3 months, checking and cleaning the outdoor unit, and scheduling annual professional maintenance checks.
If the Lennox HSXA19 is not cooling properly, check for a dirty air filter, ensure the thermostat is set correctly, inspect the outdoor unit for debris, and verify that the refrigerant levels are adequate.
To improve energy efficiency, regularly clean or replace filters, ensure vents are not blocked, keep the outdoor unit free of debris, and consider using a programmable thermostat.
If your Lennox HSXA19 is making unusual noises, check for loose parts, ensure the unit is on a stable surface, and contact a professional if the noise persists.
The air filter should be checked every month and changed every 1-3 months, depending on usage and environmental conditions.
The Lennox HSXA19 typically uses R-410A refrigerant. Always refer to the unit's specifications for confirmation.
To clean the condenser coils, turn off the power, remove any debris around the unit, and gently clean the coils with a soft brush or vacuum. For thorough cleaning, use a coil cleaner.
If the unit won't turn on, check the thermostat settings, ensure the circuit breaker is not tripped, inspect the power supply, and check for any blown fuses.
It is recommended to have a certified HVAC technician install the Lennox HSXA19 to ensure proper setup, safety, and adherence to warranty conditions.