What to do if my Cooper & Hunter IBD20NM has abnormal cooling or heating?
- WwilsonjohnAug 5, 2025
Abnormal cooling or heating in your Cooper & Hunter Air Conditioner can stem from several issues. Ensure that neither the air inlet nor the air outlet of the indoor and outdoor units are blocked. Verify that the temperature setting, fan speed, and wind direction are correctly adjusted on the remote or wired controller. Check if any doors or windows are open, allowing heat to escape or enter, and close them. Reduce direct sunshine by drawing curtains or louvers. Also, reduce the number of heat resources in the room. Lastly, inspect the filter and clean it if it's blocked or dirty.










