Error No. 53 - LG Multi V5 Service Manual
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Also See for Multi V5:
- Data manual (162 pages) ,
- Manual book (133 pages) ,
- Engineering manual (105 pages)
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ERROR CODES
Error No. 53
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
53
Communication
error between
Master: 531
outdoor unit main
Slave 1: 532
PCB and indoor
Slave 2: 533
unit(s) PCB.
Is the power supplied to the
indoor unit PCB?
Is the communication cable
connected correctly?
Is the quantity of indoor
units connected the same as
what is displayed in LGMV?
Check communication cable and installation.
168
Outdoor unit main PCB cannot receive the
signal from the indoor unit.
No
Yes
No
Yes
No
Yes
Due to our policy of continuous product innovation, some specifications may change without notification.
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Details
1. Communication cables are not connected
2. Communications cables are disconnected
3. Communication cables are disconnected or
4. Communication cables are disconnected or
5. Power to the indoor PCB is off.
6. Defective outdoor unit main PCB, communi-
7. Outdoor unit main PCB / indoor unit PCB
Supply power.
1. Check the communication cable between outdoor unit external
PCB and indoor unit PCB. Reconnect communication cable.
2. Check communication cable between cycle and outdoor unit
external PCB. Reconnect communication cable.
3. Check communication cable between cycle and communication
PCB. Reconnect communication cable
4. Check if communication cable connections are properly
installed. If not, replace communication cable.
1. Is the quantity of indoor units connected correct after the auto
addressing procedure is performed? Check communication
PCB.
2. Check if the communication PCB LED is blinking. If not, replace
communication PCB.
3. If the error is not fixed after the communication PCB is replaced
and the auto addressing procedure is performed, check the
outdoor unit main PCB.
Causes
between external PCB and indoor PCB.
or have short circuited between the main
PCB and external PCB.
have short circuited between the main PCB
and communication PCB.
have short circuited (communication cable
connection error.)
cation PCB, and / or indoor unit PCB.
is defective or damaged.
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Table of Contents
Troubleshooting
