IOM BACNET GATEWAY

66
xE9 EEPROM mismatch
xF1 DC bus voltage error
F3 Plate heat exchanger cooling refrigerant outlet temperature sensor (T6B) error
F5 Plate heat exchanger cooling refrigerant inlet temperature sensor (T6A) error
F6 Electronic expansion valve connection error
xH0 Communication error between main control chip and inverter driver chip
H2 Number of slave units detected by master unit has decreased
H3 Number of slave units detected by master unit has increased
xH4 Inverter module protection
H5 P2 protection appears three times in 60 minutes
H6 P4 protection appears three times in 100 minutes
Error code
1
Content
H7 Number of indoor units detected by master unit not same as number set on main PCB
H8 High pressure sensor error
H9 P9 protection appears ten times in 120 minutes
yHd Slave unit malfunction
C7 PL protection appears three times in 100 minutes
P1 Discharge pipe high pressure protection
P2 Suction pipe low pressure protection
xP3 Compressor current protection
P4 Discharge temperature protection
P5 Outdoor heat exchanger temperature protection
P9 Fan module protection
PL Inverter module temperature protection
PP Compressor discharge insufficient superheat protection
xL0 Inverter module protection
xL1 DC bus low voltage protection