Compressor does not run. 1. check the thermostat position. 1. Setting temp is lower than room temp.2. check the connection of the lead wire. 2. Disconnection of the lead wire.3. check the over load protector. 3. O.L.P is faulty4. check the compressor. 4. Compressor is faultyMotor does not run. 1. check the connection of the lead 1. disconnection of the lead wirewire & switch. 2. switch is faulty.2. check the motor 3. motor is faultyLow cooling capacity 1. check the refrigerant leakage. 1. Caused by the pipe crack2. check the evaporator condition 2. shortage of refrigerant( freezing, blocked with dusts, etc. ) 3. clean the evaporator & air filter.h Difference of temp. exists betweenthe suction side and the dischargeside at least 12°Ch Standard conditionIndoor : 27°C outdoor : 35°CNoise 1. check vibration of the pipe 1. pipes are contact with the other parts.2. check the propeller fan and blower 2. the hex. nut is loose( not loose or broken ). 3. the parts are broken3. check bearing noise of the motor 4. motor is faulty4. check the compressor noise against 5. compressor is faultythat of other compressors.Samsung Electronics 5-15. Troubleshooting5-1 Special Precautions5-1-1 Check the voltage of the of power source.5-1-2 Check weak and fragile parts.5-1-3 Check the connection of terminals.5-1-4 When a malfunction occurs:The input voltage shall be 115V/60Hz ( AW0719, AW0819) .The air conditioner may not operate properly if the voltage is out of this range.No¬ÁÂÃMalfunction Check point Causes