Carrier 42NQ009N Service Manual

Contents

− 49 −9-5-4. Only compressor does not operateRelays (RY01) or Q16Shut off the power supplyfrom AC outlet once and turnit on after 5 seconds.Does the OPERATION lamp blink? NONONONONONONONONONONOYESYESYESYESYESYESYESYESYESYESYESYESSee "Power can not be turned on".Does the power turn on bypushing the [ ] buttonof the remote control?See "Power can not be turned on".Is the voltage across the indoor terminal( 1 - 2 ) AC 220V? or IC30 is failure.Replace theP.C. board.Is cable connection between indoorand outdoor units correct?Correct cabling between indoorand outdoor units.Is the voltage across the outdoor terminal( 1 - 2 ) AC 220V? Cables between indoor andoutdoor units are defective.Are all the cords for compressor normal? Re-wiring or replace the defective cords.Is the compressor motor winding normal?(Check the winding resistor.)Compressor is defective.Is the capacitor for compressor normal. Capacitor is defective.Is the overload relay normal? Overload relay is defective.Does the compressor start? Compressor is defective.Compressor starts butit stop after a while?Is the gas quantity normal?(Check the pressure) Gas shortage (Gas leakage)Compressor is defectiveFILE NO. SVM-10036