Why my Cooper & Hunter CH-09LCDTU/I does not turn on?
- DDr. Cheryl MccoyAug 5, 2025
If your Cooper & Hunter Air Conditioner doesn't turn on, it might be due to a few reasons. Firstly, the unit has a 3-minute protection feature to prevent overloading, so you must wait three minutes before restarting. Secondly, if the Operation light and PRE-DEF indicators are on (for Cooling and Heating Models), or the “Fan Only” indicator is lit (in Cooling-only Models), the unit is likely defrosting due to cold outdoor temperatures. In this case, allow the unit time to defrost before attempting to turn it on again.










