9
Error Code Table
Table 3-9.1: Error code table
Error code
Content
C7
Transducer module temperature too high protect
E0
E8
Water flow failure
E1
Phase sequence error
E2
Communication error between outdoor unit and user interface
E3
Backup electric heater exchanger water outlet temperature sensor error
E4
Domestic hot water tank temperature sensor error
E5
Air side heat exchanger refrigerant outlet temperature sensor error
E6
Outdoor ambient temperature sensor error
E9
Suction pipe temperature sensor error
EA
Discharge pipe temperature sensor error
Ed
Water side heat exchanger water inlet temperature sensor error
EE
Hydronic system EEPROM error
F1
DC generatrix voltage is too low
H0
Communication error between refrigerant system main control chip and hydronic system
main control chip
H1
Communication error between refrigerant system main control chip and inverter driver chip
H2
Water side heat exchanger refrigerant inlet (liquid pipe) temperature sensor error
H3
Water side heat exchanger refrigerant outlet (gas pipe) temperature sensor error
H5
Room temperature sensor error
H6
HH
DC fan error
H7
Abnormal main circuit voltage
H8
Pressure sensor error
H9
Auxiliary heat source water outlet temperature sensor error
HA
Water side heat exchanger water outlet temperature sensor error
HF
Refrigerant system EEPROM error
P0
HP
Low pressure protection
P1
High pressure protection
P3
Compressor current protection
P4
Discharge temperature protection
P5
High temperature difference between water side heat exchanger water inlet and water
outlet temperatures protection
P6
H4
Inverter module protection
L0
Inverter module protection
L1
DC bus low voltage protection
L2
DC bus high voltage protection
L4
MCE error
L5
Zero speed protection
L7
Phase sequence error
Table continued on next page …
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