06
7.1 Error Code: Overview
If an error code appears on the controller, please contact the installation personnel and inform them of the error code,
device model, and serial number (you can find the information on the nameplate of the unit).
Table 7.3 Outdoor unit error code
Note: 'x' is a placeholder for the fan or compressor address, with 1 representing fan A or compressor A and 2 representing fan
B or compressor B.
Error code Error description
A01 Emergency stop NO
xA61 Address (x) of the slave unit error NO
AAx No.x driver mismatch, NO
xb53 No.(x) Heat dissipation fan error YES
C13 Outdoor unit address is repeated NO
C21 Communication error between indoor and master unit NO
C26 Number of indoor units detected by master unit has decreased or less than the setting amount NO
C28 Number of indoor units detected by master unit has increased or more than the setting amount NO
xC31 Communication error of address X slave outdoor unit NO
C32 Number of slave units detected by master unit has decreased NO
C33 Number of slave units detected by master unit has increased NO
xC41 Communication error between main control chip and No.(x) inverter driver chip NO
E41 Outdoor ambient temperature sensor (T4) error (open/short) NO
F31 Microchannel heat exchanger outlet temperature sensor(T6B) error(open/short) NO
F41 Main heat exchanger pipe temperature sensor (T3) error(open/short) NO
F51 Microchannel heat exchanger inlet temperature sensor(T6A) error(open/short) NO
F62 Inverter module temperature (NTC) protection NO
F63 Non-inductance Resistor temperature (Tr) protection NO
F6A F62 protection occurs 3 times in 100 minutes YES
xF71 No.(x) compressor discharge temperature sensor (T7C) error (open/short) YES
xF72 No.(x) compressor discharge temperature (T7C) protection NO
F75 Compressor discharge insufficient superheat protection NO
F7A F72 protection occurs 3 times in 100 minutes YES
F81 Gas stop-valve temperature sensor (Tg) error (open/short) NO
F91 Liquid pipe temperature sensor (T5) error (open/short) NO
FA1 Outdoor heat exchanger inlet temperature sensor (T8) error (open/short) NO
FC1 Outdoor heat exchanger outlet temperature sensor (TL) error (open/short) NO
xFd1 No.(x) Compressor suction temperature sensor (T7) error (open/short) NO
FL1 T10 outdoor ambient temperature sensor fault (open circuit/short circuit) NO
P11 High pressure sensor error NO
P12 Discharge pipe high pressure protection NO
P13 Discharge pipe high pressure switch protection NO
P14 P12 protection occurs 3 times in 60 minutes YES
P21 Low pressure sensor error YES
P22 Suction pipe low pressure protection NO
P24 Suction pipe low pressure abnormal rise NO
P25 P22 protection occurs 3 times in 60 minutes YES
xP32 No. (x) compressor high DC bus current protection NO
xP33 xP32 protection occurs 3 times in 100 minutes YES
P51 High AC voltage protection NO
P52 Low AC voltage protection NO
P53 Phase B and N of the power cable are connected to the opposite protection NO
P54 DC bus low voltage protection NO
P55 DC bus ripple over protection NO
xP56 No. (x) Inverter module DC bus low voltage error NO
xP57 No. (x) Inverter module DC bus high voltage error NO
xP58 No. (x) Inverter module DC bus excessively high voltage error NO
xP59 No. x inverter module bus voltage drop fault NO
P71 EEPROM error YES
Pb1 HyperLink overcurrent error NO
Pd1 Anti-condensation protection NO
Pd2 Pd1 protection occurs 2 times in 60 minutes YES
1b01 Electronic expansion valve (EEVA) error YES
2b01 Electronic expansion valve (EEVB) error YES
3b01 Electronic expansion valve (EEVC) error YES
4b01 Electronic expansion valve (EEVE) error YES
bA1 HyperLink cannot control indoor unit’s electronic expansion valve NO
Manual restart
required
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