E0 Indoor unit EEPROM parameter error Result 1 of 2 with this code and meaning. Expand for model and series details.
E1 Indoor / outdoor units communication error Result 1 of 2 with this code and meaning. Expand for model and series details.
E3 Indoor fan speed has been out of control Result 1 of 2 with this code and meaning. Expand for model and series details.
E4 Indoor room temperature sensor T1 open circuit or short circuit Result 1 of 2 with this code and meaning. Expand for model and series details.
E5 Evaporator coil temperature sensor T2 open circuit or short circuit Result 1 of 2 with this code and meaning. Expand for model and series details.
EC Refrigerant leakage detection Result 1 of 2 with this code and meaning. Expand for model and series details.
F1 Outdoor ambient temperature sensor T4 open circuit or short circuit Result 1 of 2 with this code and meaning. Expand for model and series details.
F2 Condenser coil temperature sensor T3 open circuit or short circuit Result 1 of 2 with this code and meaning. Expand for model and series details.
F3 Compressor discharge temperature sensor T5 open circuit or short circuit Result 1 of 2 with this code and meaning. Expand for model and series details.
F4 Outdoor unit EEPROM parameter error Result 1 of 2 with this code and meaning. Expand for model and series details.
F5 Outdoor fan speed has been out of control Result 1 of 2 with this code and meaning. Expand for model and series details.
P0 IPM malfunction or IGBT over-strong current protection Result 1 of 2 with this code and meaning. Expand for model and series details.
P1 Over voltage or over low voltage protection Result 1 of 2 with this code and meaning. Expand for model and series details.
P2 High temperature protection of compressor top Result 1 of 2 with this code and meaning. Expand for model and series details.
P4 Inverter compressor drive error Result 1 of 2 with this code and meaning. Expand for model and series details.
E0 Indoor unit EEPROM parameter error Result 2 of 2 with this code and meaning. Expand for model and series details.
E1 Indoor / outdoor units communication error Result 2 of 2 with this code and meaning. Expand for model and series details.
E2 Zero-crossing signal detection error
E3 Indoor fan speed has been out of control Result 2 of 2 with this code and meaning. Expand for model and series details.
E4 Indoor room temperature sensor T1 open circuit or short circuit Result 2 of 2 with this code and meaning. Expand for model and series details.
E5 Evaporator coil temperature sensor T2 open circuit or short circuit Result 2 of 2 with this code and meaning. Expand for model and series details.
EC Refrigerant leakage detection Result 2 of 2 with this code and meaning. Expand for model and series details.
F1 Outdoor ambient temperature sensor T4 open circuit or short circuit Result 2 of 2 with this code and meaning. Expand for model and series details.
F2 Condenser coil temperature sensor T3 open circuit or short circuit Result 2 of 2 with this code and meaning. Expand for model and series details.
F3 Compressor discharge temperature sensor T5 open circuit or short circuit Result 2 of 2 with this code and meaning. Expand for model and series details.
F4 Outdoor unit EEPROM parameter error Result 2 of 2 with this code and meaning. Expand for model and series details.
F5 Outdoor fan speed has been out of control Result 2 of 2 with this code and meaning. Expand for model and series details.
P0 IPM malfunction or IGBT over-strong current protection Result 2 of 2 with this code and meaning. Expand for model and series details.
P1 Over voltage or over low voltage protection Result 2 of 2 with this code and meaning. Expand for model and series details.
P2 High temperature protection of compressor top Result 2 of 2 with this code and meaning. Expand for model and series details.
P4 Inverter compressor drive error Result 2 of 2 with this code and meaning. Expand for model and series details.
EC07 ODU fan speed out of control Result 1 of 2 with this code and meaning. Expand for model and series details.
EC0d ODU malfunction
EC51 ODU EEPROM parameter error Result 1 of 2 with this code and meaning. Expand for model and series details.
EC52 ODU coil temperature sensor error
EC53 ODU ambient temperature sensor error
EC54 Compressor discharge temperature sensor error
EC56 IDU coil outlet temperature sensor error
EH00 IDU EEPROM malfunction Result 1 of 2 with this code and meaning. Expand for model and series details.
EH03 IDU fan speed out of control Result 1 of 2 with this code and meaning. Expand for model and series details.
EH0A IDU EEPROM parameter error Result 1 of 2 with this code and meaning. Expand for model and series details.
EH0b IDU main control and display boards communication error
EH0E Water-level alarm malfunction
EH3A External fan DC bus voltage is too low protection Result 1 of 2 with this code and meaning. Expand for model and series details.
EH3b External fan DC bus voltage is too high fault Result 1 of 2 with this code and meaning. Expand for model and series details.
EH60 IDU room temperature sensor T1 error Result 1 of 2 with this code and meaning. Expand for model and series details.
EH61 IDU coil temperature sensor T2 error Result 1 of 2 with this code and meaning. Expand for model and series details.
EH62 Evaporator coil inlet temperature sensor T2B is open or short-circuited
EH65 Evaporator coil inlet temperature sensor T2A is open or short-circuited
EHbA Communication error between indoor unit and external fan module
EHb3 Communication malfunction between wire and master control
EHC3 Refrigerant sensor is out of range Result 1 of 2 with this code and meaning. Expand for model and series details.
EL01 IDU and ODU communication error Result 1 of 2 with this code and meaning. Expand for model and series details.
EL0C System lacks refrigerant Result 1 of 2 with this code and meaning. Expand for model and series details.
EL16 Communication malfunction between adapter board and outdoor main board
FL09 Mismatch between the new and old platforms
PC00 ODU IPM module protection Result 1 of 2 with this code and meaning. Expand for model and series details.
PC01 ODU voltage protection Result 1 of 2 with this code and meaning. Expand for model and series details.
PC02 Compressor top or IPM temperature protection
PC03 Pressure protection, low or high pressure Result 1 of 2 with this code and meaning. Expand for model and series details.
PC04 Inverter compressor drive error Result 1 of 2 with this code and meaning. Expand for model and series details.
PC0L Low ambient temperature protection Result 1 of 2 with this code and meaning. Expand for model and series details.
---- IDUs mode conflict
EC07 ODU fan speed out of control Result 2 of 2 with this code and meaning. Expand for model and series details.
EC51 ODU EEPROM parameter error Result 2 of 2 with this code and meaning. Expand for model and series details.
EC52 ODU coil temperature sensor T3 error
EC53 ODU ambient temperature sensor T4 error
EC54 Compressor discharge temperature sensor TP error
EC56 IDU coil temperature sensor T2B error
ECC1 Other IDU refrigerant sensor detects leakage on multi-zone units
EH00 IDU EEPROM malfunction Result 2 of 2 with this code and meaning. Expand for model and series details.
EH03 IDU fan speed out of control Result 2 of 2 with this code and meaning. Expand for model and series details.
EH0A IDU EEPROM parameter error Result 2 of 2 with this code and meaning. Expand for model and series details.
EH0E Water level alarm malfunction
EH12 Main unit or secondary units malfunction
EH3A External fan DC bus voltage is too low protection Result 2 of 2 with this code and meaning. Expand for model and series details.
EH3b External fan DC bus voltage is too high fault Result 2 of 2 with this code and meaning. Expand for model and series details.
EH60 IDU room temperature sensor T1 error Result 2 of 2 with this code and meaning. Expand for model and series details.
EH61 IDU coil temperature sensor T2 error Result 2 of 2 with this code and meaning. Expand for model and series details.
EHba Communication error between indoor unit and external fan module
EHC1 Refrigerant sensor detects leakage
EHC2 Refrigerant sensor is out of range and a leak is detected
EHC3 Refrigerant sensor is out of range Result 2 of 2 with this code and meaning. Expand for model and series details.
EL01 IDU and ODU communication error Result 2 of 2 with this code and meaning. Expand for model and series details.
EL0C System lacks refrigerant Result 2 of 2 with this code and meaning. Expand for model and series details.
EL11 Communication malfunction between the main and secondary units
FH07 IDU lift panel communication failure or IDU opening and closing failure
FHCC Refrigerant sensor error
PC00 ODU IPM module protection Result 2 of 2 with this code and meaning. Expand for model and series details.
PC01 ODU voltage protection Result 2 of 2 with this code and meaning. Expand for model and series details.
PC02 Compressor top or IPM module protection
PC03 Pressure protection, low or high pressure Result 2 of 2 with this code and meaning. Expand for model and series details.
PC04 Inverter compressor drive error Result 2 of 2 with this code and meaning. Expand for model and series details.
PC0L Low ambient temperature protection Result 2 of 2 with this code and meaning. Expand for model and series details.
20-0 Defrosting temperature sensor Tdef failure
21 Ambient temperature sensor Ta failure
22-2 Suction temperature sensor Ts(acc) failure
23-0 Discharge temperature sensor Td1 failure
23-1 Discharge temperature sensor Td2 failure
24-0 Module heat sensor Th failure
24-1 Oil temperature sensor Toil1 failure
24-2 Oil temperature sensor Toil2 failure
25-0 Heat-exchanger inlet temperature sensor Toci1 failure
26-0 Indoor-unit communication failure: connected indoor units cannot be found for 200 communication cycles
26-1 Indoor-unit communication failure: searched indoor-unit quantity is below the set quantity
26-2 Indoor-unit communication failure: searched indoor-unit quantity exceeds the set quantity
27-0 Oil temperature Toil1 too-high protection
27-1 Oil temperature Toil2 too-high protection
28 High-pressure sensor Pd failure
29 Low-pressure sensor Ps failure
30-0 High-pressure switch HPS1 failure
30-1 High-pressure switch HPS2 failure
33-0 AT24C04 EEPROM communication failure
33-2 AT24C04 EEPROM data-check failure for model code or check sum
33-3 AT24C04 EEPROM data-check failure for out-of-limit data or reverse sequence
34-0 Discharge temperature Td1 too-high protection
34-1 Discharge temperature Td2 too-high protection
35-0 Four-way valve reversing failure while the valve is energised
35-1 Four-way valve reversing failure while the valve is not energised
36-0 Oil temperature Toil1 too-low protection
36-1 Oil temperature Toil2 too-low protection
39-0 Low-pressure sensor Ps too-low protection
39-1 Compression-ratio too-high protection
40 High-pressure sensor Pd too-high protection
43-0 Discharge temperature sensor Tdi too-low protection
43-1 Discharge temperature sensor Td1 too-low protection
45 Communication failure between outdoor units
46-0 Communication failure with INV1 module board
46-1 Communication failure with INV2 module board
46-4 Communication failure with fan 1 module board
46-5 Communication failure with fan 2 module board
47 Communication failure with the wireless module
51-0 LEVa1 overcurrent protection
51-1 LEVa2 overcurrent protection
52-0 LEVa1 disconnection fault
52-1 LEVa2 disconnection fault
75-0 High- and low-pressure difference is too small
76-0 Outdoor-unit count does not match the EEPROM setting
76-1 Outdoor-unit address does not match the EEPROM setting
76-2 Outdoor-unit capacity does not match the EEPROM setting
83 Incorrect parameter setting or outdoor-unit match
99-X Program self-fault; X=0 to 5
108 Module rectifier-side software transient overcurrent
109 Module rectifier-side current-detection circuit anomaly
110 Module hardware overcurrent
111 Compressor out of step
112 High temperature of the module radiator
113 Module overload
114 Module DC-bus undervoltage
115 Module DC-bus overvoltage
116 Communication error between the module and control board
117 Module software overcurrent
118 Module boot failure
119 Module current-detection connection error
120 Module power-supply interruption error
121 Module control-board power-supply abnormality
122 Module radiator temperature sensor abnormality
123 Module rectifier-side hardware transient overcurrent
124 Three-phase power-supply failure
125-0/1 Compressor frequency mismatch for compressor module 1 or 2
125-4/5 Fan-speed mismatch or locked rotor for fan module 1 or 2
127 MCU reset fault detected by the host
555.0 Indoor-unit connected capacity is above 150% or below 50% of outdoor-unit capacity
555.1 Heating standby because outdoor ambient temperature is above 26 degrees Celsius
555.2 Low-pressure gas standby
555.3 Cooling standby because outdoor ambient temperature is above 54 degrees Celsius
555.5 Power-restriction standby because maximum-capacity output is set to 0%
555.6 Password-lock standby
555.8 No trial running
01 Indoor ambient temperature sensor Ta failure
02 Indoor coil temperature sensor Tc1 failure
03 Indoor coil temperature sensor Tc2 failure
04 Indoor TW sensor failure
05 Indoor EEPROM failure
06 Communication failure between indoor and outdoor units
07 Communication failure between indoor unit and wired controller
08 Indoor drainage failure
09 Repeated indoor-unit address
0A Repeated central-control address
0C 50 Hz zero-crossing fault
20 Outdoor corresponding failure relayed by the indoor unit
0E0 Communication error between outdoor units; shown on the follower unit
0E2 Communication error between the outdoor unit and indoor units
0E4 T3 or T4 temperature sensor error
0E5 Outdoor-unit voltage protection
0E8 Incorrect outdoor-unit address
10H0 Communication error between the main control chip and compressor A drive chip
20H0 Communication error between the main control chip and compressor B drive chip
0H1 Communication error between the main control chip and communication chip
0H2 Connected follower outdoor-unit count is lower than the header-unit setting
0H3 Connected follower outdoor-unit count is higher than the header-unit setting
0H7 Incorrect number of connected indoor units
0H8 High-pressure sensor error
0Hb Low-pressure sensor error
10F1 Compressor A PTC error
20F1 Compressor B PTC error
0F3 T5 temperature sensor error
0F4 T6 temperature sensor error
0F5 T7 temperature sensor error
0F6 Electronic expansion valve error
10Hd Follower outdoor unit 1 reported an error to the header unit
20Hd Follower outdoor unit 2 reported an error to the header unit
0P1 Current leakage, discharge-temperature switch, or high-pressure protection
0P2 Low-pressure protection
0H5 Repeated low-pressure protection lockout
0P3 Compressor overcurrent protection
0P4 Discharge-temperature protection
0H6 Repeated discharge-temperature protection lockout
0P5 High pipe-temperature protection
0P9 DC fan protection
0H9 Repeated DC fan protection lockout
0PL High inverter-module temperature protection
0C7 Repeated high inverter-module temperature protection lockout
L0 Compressor inverter-module error Result 1 of 2 with this code and meaning. Expand for model and series details.
L1 Compressor inverter DC-bus undervoltage protection Result 1 of 2 with this code and meaning. Expand for model and series details.
L2 Compressor inverter DC-bus overvoltage protection Result 1 of 2 with this code and meaning. Expand for model and series details.
L4 Compressor inverter MCE, synchronisation, or closed-loop error Result 1 of 2 with this code and meaning. Expand for model and series details.
L7 Compressor U/V/W phase-loss protection
L8 Compressor transient frequency-variation protection
L9 Compressor commanded-versus-actual speed-difference protection
10H4 Compressor A repeated inverter-module protection lockout
20H4 Compressor B repeated inverter-module protection lockout
A tL Ambient-temperature limit operation
E1 Missing power-supply phase
E2 Communication error between the outdoor unit and MDC
E4 Outdoor T3A, T3C, or T4 temperature-sensor error
E5 Outdoor-unit voltage protection
H0 Communication error between the main board and a compressor drive board
H1 Communication error between the main control chip and communication chip
H7 Connected indoor-unit count does not match the outdoor-unit setting
H8 High-pressure sensor error
Hb Low-pressure sensor error
HC Outdoor main board does not match the outdoor-unit model
F4 Outdoor T6 temperature-sensor error
F5 Outdoor T7C1, T7C2, or T7C3 temperature-sensor error
F8 Multiport distribution controller (MDC) error
P1 Current-leakage protection or discharge-temperature/high-pressure protection
P2 Low-pressure protection
H5 Repeated low-pressure protection lockout
P3 Compressor overcurrent protection
P4 Discharge-temperature protection
H6 Repeated discharge-temperature protection lockout
P5 High condenser-pipe temperature protection
P9 Outdoor DC-fan protection
H9 Repeated outdoor DC-fan protection lockout
PL Inverter-module temperature protection
C7 Repeated inverter-module temperature protection lockout
PP Liquid-slugging protection
F0 Repeated liquid-slugging protection lockout
L0 Compressor inverter-module error Result 2 of 2 with this code and meaning. Expand for model and series details.
L1 Compressor inverter DC-bus undervoltage protection Result 2 of 2 with this code and meaning. Expand for model and series details.
L2 Compressor inverter DC-bus overvoltage protection Result 2 of 2 with this code and meaning. Expand for model and series details.
L4 Compressor inverter MCE, synchronisation, or closed-loop error Result 2 of 2 with this code and meaning. Expand for model and series details.
L7 Compressor inverter U/V/W phase-loss protection
L8 Compressor inverter transient frequency-variation protection
L9 Compressor inverter commanded-versus-actual speed-difference protection
H4 Repeated compressor inverter-module protection lockout
A TL Outdoor ambient temperature is outside the operating limit
S E0 MDC communication error with the outdoor unit
S E1 MDC T1 temperature-sensor error
S E2 MDC T2 temperature-sensor error
S E3 MDC T3 temperature-sensor error
S E4 MDC high-pressure sensor error
S E5 MDC intermediate-pressure sensor error
S E6 MDC low-pressure sensor error
S EP MDC condensate-switch error
S P1 MDC high-pressure protection
SC ER Mismatched refrigerant piping and communication wiring for an indoor unit
no 1d No indoor unit is connected to port 1 of the main MDC
no A0 Incorrect MDC address
CS x More than two indoor units are connected to one MDC port
dd Heating and cooling mode conflict
E1 Communication error between the indoor and outdoor unit
E2 Indoor room-temperature sensor T1 error
E4 Indoor outlet-pipe temperature sensor T2B error
E5 Indoor inlet-pipe temperature sensor T2A error
E6 Indoor-unit DC fan error
E7 Indoor-unit EEPROM data-storage error
UU Multiport distribution controller error during auto system check
E9 Communication error between the indoor unit and wired controller
Eb Indoor electronic expansion valve is shorted or stuck
EC Indoor fan error during auto system check
Ed Outdoor-unit error relayed to the indoor display
EE Indoor-unit condensate overflow
FE No indoor-unit address when first powered on