41
English
Malfunction code
Contents
Solution
Main
code
Sub code
Master/sub 1/sub 2
E3
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 wiring
diagram 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.
• Reverse connection of high/low pressure gas pipe
and suction gas pipe of Branch Selector unit.
• Open stop valves.
• Check refrigerant amount and recharge.
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
208/230, 460V: (Y5E)-A6P (X8A)
575V: (Y5E)-A7P (X8A)
Check connection on printed circuit board or actuator.
32/37/42
Electronic expansion valve malfunction
208/230, 460V: (Y7E)-A6P (X11A)
575V: (Y7E)-A7P (X11A)
Check connection on printed circuit board or actuator.
F3
01/03/05
Discharge temperature too high (R21T):
• Stop valves are closed.
• Reverse connection of high/low pressure gas pipe
and suction gas pipe of Branch Selector unit.
• Refrigerant shortage.
• Open stop valves.
• Check refrigerant amount and recharge.
• Check connection of high/low pressure gas pipe
and suction gas pipe.
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.
F9
01
Electronic expansion valve malfunction (Branch Selec-
tor units).
Check connection on printed circuit board or actuator.
02
05
H9
01/02/03
Temperature sensor malfunction
(R1T)-A1P (X18A)
Check connection on printed circuit board or actuator.
J3
16/22/28
17/23/29
Temperature sensor malfunction
(R21T)-A1P (X19A)
Check connection on printed circuit board or actuator.
47/49/51
48/50/52
Temperature sensor malfunction
(R14T)-A1P (X19A)
Check connection on printed circuit board or actuator.
J5
01/03/05
Temperature sensor malfunction
208/230, 460V: (R12T)-A6P (X15A)
575V: (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
208/230, 460V: (R11T)-A6P (X15A)
575V: (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.
03_EN_3P734038-1.indd 40
03_EN_3P734038-1.indd 40
2023/08/25 13:32:21
2023/08/25 13:32:21
