Daikin VRV RXYQ72XBYC Series Installation Manual page 44

Malfunction code
Main Sub code
code Master/sub 1/sub 2
01/03/05
E3
02/04/06
13/14/15
18
01/02/03
E4
01/05/08
E9
03/06/09
04/07/10
26/27/28
29/34/39
32/37/42
01/03/05
F3
20/21/22
02
F6
01/02/03
H9
16/22/28
J3
17/23/29
47/49/51
48/50/52
01/03/05
J5
18/19/20
01/02/03
J6
08/09/10
11/12/13
41
Contents
• High pressure switch is activated.
(S1PH)-A1P (X2A)
• High pressure switch connectors are detached.
-A1P (X2A, X3A, X4A)
• Stop valves are closed.
• Refrigerant overcharge.
Liquid pipe stop valve is closed.
• Stop valves are closed.
• Refrigerant overcharge.
Low pressure malfunction:
• Stop valves are closed.
• Refrigerant shortage.
• Indoor unit malfunction
Electronic expansion valve malfunction
(Y1E)-A1P (X21A)
Electronic expansion valve malfunction
(Y2E)-A1P (X22A)
Electronic expansion valve malfunction
(Y3E)-A1P (X23A)
Electronic expansion valve malfunction
(Y4E)-A1P (X25A)
Electronic expansion valve malfunction
(Y5E)-A7P (X8A)
Electronic expansion valve malfunction
(Y7E)-A7P (X11A)
Discharge temperature too high (R21T):
• Stop valves are closed.
• Refrigerant shortage.
Compressor casing temperature too high (R14T):
• Stop valves are closed.
• Refrigerant shortage.
• Stop valves are closed.
• Refrigerant overcharge.
Temperature sensor malfunction
(R1T)-A1P (X18A)
Temperature sensor malfunction
(R21T)-A1P (X19A)
Temperature sensor malfunction
(R14T)-A1P (X19A)
Temperature sensor malfunction
(R12T)-A7P (X15A)
Temperature sensor malfunction
(R10T)-A1P (X29A)
Temperature sensor malfunction
(R11T)-A7P (X15A)
Temperature sensor malfunction
(R8T)-A1P (X29A)
Temperature sensor malfunction
(R9T)-A1P (X29A)
Solution
• Check stop valves situation or abnormalities in
(field) piping or airflow over air cooled coil.
• Securely connect each connector. Refer to the wiring
diagram attached to the back of the control box cover.
• Open stop valves.
• Check refrigerant amount and recharge.
Open liquid pipe stop valve.
• Open stop valves.
• Check refrigerant amount and recharge.
• Open stop valves.
• Check refrigerant amount and recharge.
• Check the user interface's display or Transmission
wiring between the outdoor unit and the indoor unit.
Check connection on printed circuit board or actuator.
Check connection on printed circuit board or actuator.
Check connection on printed circuit board or actuator.
Check connection on printed circuit board or actuator.
Check connection on printed circuit board or actuator.
Check connection on printed circuit board or actuator.
• Open stop valves.
• Check refrigerant amount and recharge.
• Open stop valves.
• Check refrigerant amount and recharge.
• Open stop valves.
• Check refrigerant amount and recharge.
Check connection on printed circuit board or actuator.
Check connection on printed circuit board or actuator.
Check connection on printed circuit board or actuator.
Check connection on printed circuit board or actuator.
Check connection on printed circuit board or actuator.
Check connection on printed circuit board or actuator.
Check connection on printed circuit board or actuator.
Check connection on printed circuit board or actuator.
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