Error No. 62 - LG Multi V5 Service Manual

ERROR CODES

Error No. 62

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
62
High temperature
at the outdoor unit
Master: 621
inverter PCB heat
Slave 1: 622
sink.
Slave 2: 623
Is the installation correct?
Yes
Is the inverter PCB IPM con-
nection correct?
Yes
Is the outdoor unit
fan motor operating
normally?
Yes
Is the inverter PCB
assembly correct?
Yes
Recheck power and installation.
Check Inverter PCB Connection Installation
172
Details
Heatsink temperature is >257°F.
No
1. Check piping for clogs or damage.
2. Check if the outdoor unit or indoor unit air flow is blocked.
3. Check EEV connections / assembly / or if the EEV is operating normally.
4. Check refrigerant pressure
5. Check power wiring to see if it is connected properly or is damaged.
No
Check inverter PCB connections.
No
Check the outdoor unit fan motor operation and / or if it is locked up.
No
Replace inverter PCB assembly.
Due to our policy of continuous product innovation, some specifications may change without notification.
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Causes
1. Inverter PCB IGBT / IPM connection is not
correct.
2. Outdoor unit fan motor operation is
malfunctioning.
3. Outdoor unit inverter PCB assembly is
defective.
4. Overload operation (pipe is clogged, fan is
blocked, EEV is defective, overcharge in
refrigerant).
Images here are representative of system
components. Actual component appearance
depends on model and system type.
Always apply heat transfer paste to the new
inverter PCB heat sink before installing. For
instructions, see "Replacing the Inverter PCB
Heat Sink" page later in this section.