LG MULTI F Installation Manual page 91

F
MULTI
F
MULTI MAX
Please refer to the Safety Precautions on pages 4-7 for more detail to prevent injury or death regarding the operation and
service troubleshooting of the Multi F / Multi F MAX product.
Troubleshooting Using Error Codes
Refer to the tables below and on the next page for error codes
that are generated from the indoor and outdoor units. These codes
indicate different types of unit failures, assist in self-diagnosis, are
the most common that will manifest through these units. Error codes
are displayed on indoor unit LEDs, wired remote controllers, the
outdoor unit PCB, and through LG Monitoring View (LGMV) diagnos-
tic software.
Systems could generate additional codes not listed here. Contact LG
Support if these types of errors are seen and a simple power down
and boot up has not corrected the issue.
the system yourself.
• If two or more errors occur simultaneously, the highest error code
number is displayed first.
• After error is resolved, the error code does not display.
Decoding the Error Display
See images and table below for indoor unit error codes, location of
LEDs, and operation status.
The first and second number on the LED indicates error number. Ex-
ample: 21 = LED1 (Red light) 2x blink, LED2 (Green light) 1x blink.
Error Code Nomenclature Definitions
• MICOM: Non-volatile memory chip where unit setup information is
stored.
• EEPROM: Non-volatile memory chip where device identification,
size, and factory defined default component operating parameters
are stored.
Table 41: Indoor Unit Error Codes.
Error Code
00
01
02
03
04
05
06
07
09
10
Do not attempt to fix
Description
No error
Indoor unit room temperature sensor error
Indoor unit inlet pipe sensor error
Controller error
Drain pump error (optional)
Communication error between indoor unit and outdoor units
Indoor unit outlet pipe sensor error
Different mode operation error
Indoor unit EEPROM error
Indoor unit BLDC motor fan lock
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. "LG" is a registered trademark of LG Corp.
ERROR CODE TABLES
Figure 124: Example of Standard Wall-Mounted Indoor Unit LEDs.
Figure 125: Example of Art Cool Mirror Wall-Mounted Indoor Unit
LEDs.
Figure 126: Example of Ceiling Cassette Indoor Unit LEDs.
Number of Blinks = Error Code
Appearances will vary depending on model.
Indoor Unit Operation Status
LED 1
(UNITS PLACE)
LED 2
(TENS PLACE)
Receiver
Receiver
LED 1
(UNITS PLACE)
LED 2
(TENS PLACE)
LED 2: Tens Place LED 1: Units Place
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
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