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Let me make sure I understand.You can turn thermostat to COOL and after the 5 minute delay all comes on and works, but compressor is shutting down before we reach desired temp. Is this correct?
OK during the short time compressor runs feel of the large copper line at outdoor unit and tell me if it is outdoor temperature, slightly cool, sweating cold or ice cold
Sounds like this s going to be an issue with the compressor or refrigerant pressures.Compressor has most likely shut down on what is called internal overload or a pressure switch.You are most likely going to get a technician onsite to fix this.