Troubleshooting; Error Codes - LG LS090HSV4 Installation Manual

trOUBlESHOOting

Error Codes

troubleshooting Using Error codes
Refer to Tables 20 and Table 22 for error codes that are generat-
ed from the indoor and outdoor units. These codes are the most
common that will manifest through these units. Your particular model
duct free system might generate additional codes not listed here.
Please contact LG Support if you see these types of errors and a
simple power down and boot up has not corrected the issue. You
should not attempt to fix the system yourself.
Error Codes
• Refer to the figures below for your particular indoor unit's LED
configuration.
• Indicate different types of unit failures, assists in self-diagnosis and
to track the frequency of occurrence.
• Error codes are shown on the LEDs of indoor units, wired remote
controller, the Single Zone unit control board, and LG Monitoring
View (LGMV) Diagnostic Software.
• If two or more errors occur simultaneously, the lower error code
number is displayed first.
• After error is resolved, the error code does not display.
Table 20: Single Zone Wall Mounted Indoor Unit Error Codes
Error
Code
1 Indoor unit room temperature sensor error
2 Indoor unit inlet pipe sensor error
4 Float switch error (optional)
5 Communication error between indoor unit and outdoor units
6 Indoor unit outlet pipe sensor error
9 Indoor unit EPROM error
10 Indoor unit BLDC motor fan lock
12 Indoor unit middle pipe sensor error
50
Description
Due to our policy of continuous product innovation, some specifications may change without notification.
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Decoding the Error Display
The first and second number on the LED indicates error number.
Example: 21 = LED1 (Green light) 2x blink, LED2 (Red light) 1x blink
Error Code Nomenclature Definitions
• MICOM: Non-volatile memory chip where unit setup information is
stored.
• EPROM: Non-volatile memory chip where device identification,
size, and factory defined default component operating parameters
are stored.
Figure 73: IDU LS-HSV4 Models
(Plasma LED)
LED 1
(UNITS PLACE)
LED 2
(TENS PLACE)
Receiver
No. of Times Indoor Unit
LEDs Blink
LED1 LED2
(Power LED)
1X -
2X -
4X -
- 5X
6X -
9X -
- 1X
2X 1X