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8.1 Error Codes
Error code
Content
FE
Undefined address error
EE
EEPROM error
C7
PL protection appears three times in 100 minutes
E9
EEPROM mismatch
H4
Inverter module protction
H5
P2 protection appears three times in 60 minutes
H6
P4 protection appears three times in 100 minutes
1F6
Electronic expansion valve 1 connection error
2F6
Electronic expansion valve 2 connection error
E1
Communication error between hydro module and wired controller
E8
Water flow failure
F3
Water outlet temperature sensor error
F9
Water inlet temperature sensor error
F5
Tank temperature sensor error
E7
Discharge pipe temperature sensor error
FA
Suction pipe temperature sensor error
F7
IDU same address error
FC
R410a loop liquid pipe temperature sensor error
Fd
R134a loop liquid pipe temperature sensor error
F8
Room temperature sensor error
H8
High pressure sensor error
Hb
Low pressure sensor error
E2
Communication error between hydro box and outdoor unit
H0
Communication error between main control chip and inverter driver chip
E0
Communication error between master hydro module and slave hydro module
Ed
Outdoor unit error
E5
Abnormal power supply
PP
Compressor discharge insufficient superheat protection
P1
Discharge pipe high pressure protection
P2
Suction pipe low pressure protection
P3
Compressor current protection
P4
Discharge temperature protection
PL
Inverter module temperature protection
F1
DC bus voltage error