Display shows LO and unit does not cool properly

Safety: Turn the unit OFF before cleaning filters or coils.

Steps:

• Clean filter: Remove and clean the air filter thoroughly.
• Check airflow: Ensure supply and return grilles are not blocked by furniture, curtains, or covers.
• Inspect indoor coil: If the coil is iced over, turn the unit to FAN ONLY mode and allow the ice to melt completely. Then clean the coil if dirty.
• Adjust setpoint: Avoid setting the thermostat extremely low in cool mode when the room is already cool.
• Sensor check: If LO persists and the coil is not freezing, the evaporator sensor may be misreading; see E2 procedures.
• Refrigerant issues: Repeated freezing or LO with clean filters may indicate low refrigerant; contact a technician.