The air conditioner does not cool or warm the room

Check the following:

• Make sure the air filters are not dirty.
• Make sure the air inlets and outlets of the indoor and outdoor units are not blocked by objects.
• Make sure the temperature setting on the remote controller is appropriate.
• Make sure the doors and windows are closed.
• Make sure the air flow and direction settings are appropriate.
• Make sure ventilation fans in the room are not operating.