Daikin VRV RXYQ72XBYC Series Installation Manual

Also see for VRV RXYQ120XBYC Series: Operation manual

41EnglishMalfunction codeContents SolutionMaincodeSub codeMaster/sub 1/sub 2E3 01/03/05 • High pressure switch is activated.(S1PH)-A1P (X2A)• High pressure switch connectors are detached.-A1P (X2A, X3A, X4A)• Check stop valves situation or abnormalities in(field) piping or airflow over air cooled coil.• Securely connect each connector. Refer to the wiringdiagram attached to the back of the control box cover.02/04/06 • Stop valves are closed.• Refrigerant overcharge.• Open stop valves.• Check refrigerant amount and recharge.13/14/15 Liquid pipe stop valve is closed. Open liquid pipe stop valve.18 • Stop valves are closed.• Refrigerant overcharge.• Open stop valves.• Check refrigerant amount and recharge.E4 01/02/03 Low pressure malfunction:• Stop valves are closed.• Refrigerant shortage.• Indoor unit malfunction• Open stop valves.• Check refrigerant amount and recharge.• Check the user interface’s display or Transmissionwiring between the outdoor unit and the indoor unit.E9 01/05/08 Electronic expansion valve malfunction(Y1E)-A1P (X21A)Check connection on printed circuit board or actuator.03/06/09 Electronic expansion valve malfunction(Y2E)-A1P (X22A)Check connection on printed circuit board or actuator.04/07/10 Electronic expansion valve malfunction(Y3E)-A1P (X23A)Check connection on printed circuit board or actuator.26/27/28 Electronic expansion valve malfunction(Y4E)-A1P (X25A)Check connection on printed circuit board or actuator.29/34/39 Electronic expansion valve malfunction(Y5E)-A7P (X8A)Check connection on printed circuit board or actuator.32/37/42 Electronic expansion valve malfunction(Y7E)-A7P (X11A)Check connection on printed circuit board or actuator.F3 01/03/05 Discharge temperature too high (R21T):• Stop valves are closed.• Refrigerant shortage.• Open stop valves.• Check refrigerant amount and recharge.20/21/22 Compressor casing temperature too high (R14T):• Stop valves are closed.• Refrigerant shortage.• Open stop valves.• Check refrigerant amount and recharge.F6 02 • Stop valves are closed.• Refrigerant overcharge.• Open stop valves.• Check refrigerant amount and recharge.H9 01/02/03 Temperature sensor malfunction(R1T)-A1P (X18A)Check connection on printed circuit board or actuator.J3 16/22/2817/23/29Temperature sensor malfunction(R21T)-A1P (X19A)Check connection on printed circuit board or actuator.47/49/5148/50/52Temperature sensor malfunction(R14T)-A1P (X19A)Check connection on printed circuit board or actuator.J5 01/03/05 Temperature sensor malfunction(R12T)-A7P (X15A)Check connection on printed circuit board or actuator.18/19/20 Temperature sensor malfunction(R10T)-A1P (X29A)Check connection on printed circuit board or actuator.J6 01/02/03 Temperature sensor malfunction(R11T)-A7P (X15A)Check connection on printed circuit board or actuator.08/09/10 Temperature sensor malfunction(R8T)-A1P (X29A)Check connection on printed circuit board or actuator.11/12/13 Temperature sensor malfunction(R9T)-A1P (X29A)Check connection on printed circuit board or actuator.