Indoor unit main control board error. Needs professional repair. Filter Clean
Remember: When in doubt, unplug the unit for 15 minutes to reset the motherboard. If the problem persists, refer to Chapter 7 of the manual (Warranty and Service) to locate an authorized Kosner repair center. kosner air conditioning manual english
This is arguably the most valuable part of the . When your unit flashes a red or green LED sequence, the manual provides a table to decode it. Common Kosner error codes include: Indoor unit main control board error