LG ARNH963K2A2 Installation Manual page 78

troublesHootING
Error Codes
Table 27: Hydro Kit Error Code Troubleshooting (Continued)
Error Code Hydro Kit
Model
K3
43
K3
44
K3
46
K3
53
K3
60
K3
62
K3
65
K3
73
78
Error Type
High pressure sensor defect of inverter compressor
Inverter inside air temperature sensor defect
Inverter compressor suction pipe temperature
sensor defect
Communication error (indoor unit→outdoor unit
main PCB)
Inverter PCB EEPROM error
Excessive rise of inverter heatsink temperature
Inverter heatsink temperature sensor defect
Overcurrent (peak) detected at inverter input
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Cause
R134a compressor discharge pressure sensor
has failed and/or cable is loose, disconnected or
shorted.
R134a circuit inverter board ambient air
temperature sensor has failed and/or cable is
loose, disconnected or shorted.
R134a compressor suction temperature sensor
has failed and/or cable is loose, disconnected or
shorted.
Lost communication between the Hydro Kit and
the outdoor (water source) unit. Communication
cable is loose, disconnected or shorted.
Communication error occurred between the R134a
circuit inverter board and the onboard inverter
board EEPROM chip. Check EEPROM chip for
bent pins and improper installation. If installed OK,
potential EEPROM failure.
R134a circuit inverter board has sensed a high
inverter board heat sink temperature.
R134a circuit inverter board heat sink temperature
sensor has failed and/or cable is loose,
disconnected or shorted.
R134a circuit inverter board has reported an over
current spike occurred.