Some common causes are the following:
• Airflow is restricted – Make sure there are no curtains, blinds or furniture blocking the supply and return grill of the unit.
• Air Filter is dirty – Make sure to clean the filter at least once in every 2 weeks.
•The capacity of your unit is not correct for your desired area.
We highly recommend you to reach our Accredited Service Centers (click here for the full list) to provide you a better assessment and run a complete diagnosis on your unit. You may also contact our Koppel Customer Service Hotline at (02) 8823-8883 + Local Numbers.
For Parts Inquiry: Local 310 or 313
For Customer Support: Local 316, 317, 318, 319, 320, 321 or 322.