Error No. 107 - LG Multi V5 Service Manual

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.
Error No. Description
107
Outdoor unit
Master: 1071 fan DC link low
voltage error.
Slave 1: 1072
Slave 2: 1073
Is the wiring between
the fan motor and PCB
Is the DC link voltage
Is the fan PCB assembly
Recheck power and installation.
Images here are representative of system components. Actual component appearance
depends on model and system type.
• Fan PCB DC link voltage supplied is <140V
(208-230V units) or <380V (460V units).
• Outdoor unit fan DC link voltage is <50V for
a minimum of 250μs (for both 208-230V and
460V units).
• A capacitor that is serving the ODU fan
inverter is not working properly, or the voltage
at the capacitor is out of range (low). Start di-
agnosis at the inverter socket on the outdoor
unit noise filter PCB.
correct?
Yes
No
correct?
Yes
No
correct?
Yes
Due to our policy of continuous product innovation, some specifications may change without notification.
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Details
1. Wiring is not installed correctly between the
2. Fan PCB assembly is defective.
3. Reactor terminal contact is defective.
4. DC link terminal wiring and / or contact is
5. Diode bridge is defective.
6. Damaged electrical condenser compo-
Check DC link and DC link wire connections.
Measure DC link voltage.
230V units) or <380V (460V units).
Replace fan PCB assembly.
DC voltage connection.
ERROR CODES

Error No. 107

Causes
inverter PCB and the fan PCB.
defective / disconnected.
nent (serving capacitor) on inverter driver
board.
DC voltage connected.
189