LG ARUM072BTE5 Installation Manual page 165

Please refer to the Safety Precautions on pages 4-7 for more detail to prevent injury or death regarding the operation and service
WARNING
troubleshooting of the Multi V product.
Table 78: Error Codes, continued.
Error Code
7 7 1 Master outdoor unit fan overcurrent error.
7 7 2 Slave1 outdoor unit fan overcurrent error.
7 7 3 Slave2 outdoor unit fan overcurrent error.
7 9 1 Master outdoor unit fan operation failure error.
7 9 2 Slave1 outdoor unit fan operation failure error.
7 9 3 Slave2 outdoor unit fan operation failure error.
1 Master outdoor unit main PCB onboard EPROM error. • Verify the EPROM is present and in the socket correctly.
8 6
8 6 2 Slave1 outdoor unit main PCB onboard EPROM error.
8 6 3 Slave2 outdoor unit main PCB onboard EPROM error.
8 7 1 Master outdoor unit fan PCB EPROM error.
8 7 2 Slave1 outdoor unit fan PCB EPROM error.
8 7 3 Slave2 outdoor unit fan PCB EPROM error.
Communication error between master outdoor unit and
1 0 4 1
slave outdoor units.
Communication error between slave1 outdoor unit and
1 0 4 2
master and slave2 outdoor units.
Communication error between slave2 outdoor unit and
1 0 4 3
master and slave1 outdoor units.
1 0 5 1 Master outdoor unit fan PCB communication error.
1 0 5 2 Slave1 outdoor unit fan PCB communication error.
1 0 5 3 Slave2 outdoor unit fan PCB communication error.
1 0 6 1 Master outdoor unit fan IPM error.
1 0 6 2 Slave1 outdoor unit fan IPM error.
1 0 6 3 Slave2 outdoor unit fan IPM error.
1 0 7 1 Master outdoor unit fan DC link low voltage error.
1 0 7 2 Slave1 outdoor unit fan DC link low voltage error.
1 0 7 3 Slave2 outdoor unit fan DC link low voltage error.
For detailed information on how to troubleshoot each error, see the Multi V Service Manual on www.lghvac.com.
Description
Due to our policy of continuous product innovation, some specifications may change without notification.
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ERROR CODE TABLES
Details
Outdoor unit fan current is >10A (for 208-230V units) or 5A (for
460V units).
Slave1 outdoor unit fan current is >10A (for 208-230V units) or
5A (for 460V units).
Slave2 outdoor unit fan current is >10A (for 208-230V units) or
5A (for 460V units).
Master outdoor unit fan is experiencing first position sensor
failure.
Slave1 outdoor unit fan is experiencing first position sensor
failure.
Slave2 outdoor unit fan is experiencing first position sensor
failure.
• Check if all pins are in and are not bent.
• Check if notch in the chip lines up with the arrow on the
socket.
• Communication error between master outdoor unit fan MICOM
and EPROM.
• Verify EPROM is present and in the socket correctly.
• Communication error between slave1 outdoor unit fan MICOM
and EPROM.
• Verify EPROM is present and in the socket correctly.
• Communication error between slave2 outdoor unit fan MICOM
and EPROM.
• Verify EPROM is present and in the socket correctly.
Master outdoor unit main PCB is not receiving signals from
slave outdoor units.
Slave1 outdoor unit main PCB is not receiving signals from
master and slave2 outdoor units.
Slave2 outdoor unit main PCB is not receiving signals from
master and slave1 outdoor units.
Master outdoor unit main PCB is not receiving a signal from the
fan.
Slave1 outdoor unit main PCB is not receiving a signal from the
fan.
Slave2 outdoor unit main PCB is not receiving a signal from the
fan.
Instant overcurrent (peak) of master outdoor unit fan IPM.
Instant overcurrent (peak) of slave1 outdoor unit fan IPM.
Instant overcurrent (peak) of slave2 outdoor unit fan IPM.
A capacitor that is serving the ODU fan inverter is not working
properly, or the voltage at the capacitor is out of range (low).
• Outdoor unit fan DC link voltage is <50V for a minimum of
250µs (for both 208-230V and 460V units).
• Disconnected DC link.
• Damaged electrical condenser component (serving capacitor)
on inverter driver board.
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