Do I ever need to replace the air filter in my indoor head unit?

Yes.

• If the air filter should be damaged at any point (during cleaning for example) it should be replaced with a new one.

• After 2,880 hours of use the display on the head unit will flash a "nF" code. The air filter should be replaced with a new one at this time.

• Please refer to the Maintenance section of the product manual for the air filter removal and replacement procedure.

If you no longer have the printed manuals that came supplied with your mini split system, copies of the installation, user, and service manuals can be downloaded from this page.