LG ARUB115BT2 Installation Manual - Page 79

ENGLISH Outdoor unit related error Test Run Display Title Cause of Error Communication Error Between 1 Master Outdoor Unit and Other Outdoor Unit 10 4 Communication Error Between 2 slave Outdoor Unit and Other Outdoor Unit Failing to receive Slave Unit signal at main PCB of Master outdoor unit Failing to receive master and other Slave Unit signal at main PCB of slave outdoor unit 1 Master Outdoor Unit Fan PCB Communication Error 10 5 2 slave Outdoor Unit Fan PCB Communication Error Failing to receive fan signal at main PCB of master unit. Failing to receive fan signal at main PCB of slave unit. 1 Master Outdoor Unit FAN IPM Fault Error Instant Over Current at Master Outdoor Unit Fan IPM 10 6 2 slave Outdoor Unit FAN IPM Fault Instant Over Current at slave Outdoor Unit Fan IPM Error 1 Master Outdoor Unit Fan DC Link Low Voltage Error 10 7 2 slave Outdoor Unit Fan DC Link Low Voltage Error Master Outdoor Unit Fan DC Link Input Voltage is under 380V slave Outdoor Unit Fan DC Link Input Voltage is under 380V 1 Master Outdoor Unit Liquid pipe Temperature Sensor Error 11 3 2 slave Outdoor Unit Liquid pipe Temperature Sensor Error Liquid pipe temperature sensor of Master outdoor unit is open or short Liquid pipe temperature sensor of slave outdoor unit is open or short Master Outdoor Unit Subcooling 1 Inlet Temperature Sensor Error 1 1 4 2 slave Outdoor Unit Subcooling Inlet Temperature Sensor Error Master Outdoor Unit Subcooling Inlet Temperature Sensor open or short slave Outdoor Unit Subcooling Inlet Temperature Sensor open or short 1 Master Outdoor Unit Subcooling Outlet Temperature Sensor Error 1 1 5 2 slave Outdoor Unit Subcooling Outlet Temperature Sensor Error Master Outdoor Unit Subcooling Outlet Temperature Sensor open or short slave Outdoor Unit Subcooling Outlet Temperature Sensor open or short Failure of operation mode conver- Pressure unbalance between outdoor units 1 sion at Master Outdoor Unit 1 5 1 2 Failure of operation mode conversion at slave Outdoor Unit Pressure unbalance between outdoor units Master Outdoor Unit Constant 1 Speed Compressor Fault 1 7 3 2 slave Outdoor Unit Constant Speed Compressor Fault Comp locking, Check Valve leakage, comp dielectric break down at Master Outdoor Unit Comp locking, Check Valve leakage, comp dielectric at slave Outdoor Unit Excessive increase of Master 1 Outdoor Unit Fan PCB Heat Sink 1 9 3 Temperature Excessive increase of slave 2 Outdoor Unit Fan PCB Heat Sink Temperature Master Outdoor Unit Fan Inverter PCB Temperature is Over 95°C slave Outdoor Unit Fan Inverter PCB Temperature is Over 95°C Master Outdoor Unit Fan PCB 1 Heat Sink Temperature Sensor 19 4 Error slave Outdoor Unit Fan PCB 2 Heat Sink Temperature Sensor Error Master Outdoor Unit Fan PCB Heat Sink Temperature Sensor open or short slave Outdoor Unit Fan PCB Heat Sink Temperature Sensor open or short Installation Manual 79