caulking around the PTAC wall sleeve to make sure all air and water openings are properly sealed.
Check the wall sleeve's level. It should be tilted to the outside (1/4 bubble tilt) from right to left; if the unit
has an internal drain system, the sleeve should be leveled so that condensate water drains into connected drain line/kit
location. This can be tested by pouring a cup of water into the wall sleeve.
Check the drain hole locations at rear of sleeve and bottom of sleeve; remove any blockage.
Base Pan and Condenser Coil
Cover the entire control panel area and fan motor with plastic to prevent damage while cleaning is in progress.
Allow unit to dry for 24 hours before reapplying power. When power is reapplied, test the unit for proper operation.
Check clearance around the HVAC unit to ensure that the intake air and discharge air paths are not blocked or restricted.
Leave a minimum of eight inches from the unit to furniture, beds, or other objects for proper operation.