IOM BACNET GATEWAY

Table of Error Codes for HTHM
Error code Content
EE EEPROM error
FE No address error
C7 Inverter module temperature protection
E9 EEPROM mismatch
H4 Inverter module protection
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
E8
Communication error between hydro box and wired controller
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
Fb NTC temperature sensor error
FC R410a circle liquid pipe temperature sensor error
Fd R134a circle liquid pipe temperature sensor error
F8 Room temperature sensor error
H8
High pressure sensor error
68
Hb Low pressure sensor error
E2 Communication error between hydro box and outdoor unit
H0 Communication error between main PCB and inverter driver PCB
E0 Communication error between master hydro box and slave hydro box
Ed Outdoor unit error
E5 Abnormal power supply voltage
PP Compressor discharge insufficient superheat protection
P1 Discharge pipe high pressure protection