24
ANNEX A:Error code
Error code
FE
EE
C7
E9
H4
H5
H6
1F6
2F6
E1
E8
F3
F9
F5
E7
FA
F7
FC
Fd
F8
H8
Hb
E2
H0
E0
Ed
E5
PP
P1
P2
P3
P4
PL
F1
Content
Undefined address error
EEPROM error
PL protection appears three times in 100 minutes
EEPROM mismatch
Inverter module protction
P2 protection appears three times in 60 minutes
P4 protection appears three times in 100 minutes
Electronic expansion valve 1 connection error
Electronic expansion valve 2 connection error
Communication error between hydro module and wired controller
Water flow failure
Water outlet temperature sensor error
Water inlet temperature sensor error
Tank temperature sensor error
Discharge pipe temperature sensor error
Suction pipe temperature sensor error
IDU same address error
R410a loop liquid pipe temperature sensor error
R134a loop liquid pipe temperature sensor error
Room temperature sensor error
High pressure sensor error
Low pressure sensor error
Communication error between hydro box and outdoor unit
Communication error between main control chip and inverter driver chip
Communication error between master hydro module and slave hydro module
Outdoor unit error
Abnormal power supply
Compressor discharge insufficient superheat protection
Discharge pipe high pressure protection
Suction pipe low pressure protection
Compressor current protection
Discharge temperature protection
Inverter module temperature protection
DC bus voltage error