Keystone KSTAT10-2C 10000 BTU 230V Through-The-Wall Air Conditioner with Follow Me LCD Remote Control 2016 energy star: 10.6 energy efficiency Ratio (eer)|10,000 BTU air Conditioner for through-the-wall installation (not suitable for window installation) 10,000 BTU air Conditioner for through-the-wall installation (not suitable for window installation) Special 230-volt electrical outlet required (unit will not work with a standard 115V outlet) Cools a room up to 450 sq. Ft. With dehumidification up to 2.3 pints per hour Troubleshooting steps are found in Page 21 of User Manual found under Technical specification