Multi F Ceiling Cassette Installation Manual

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Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
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MA
X
MUL
TI
F
MUL
TI
F
Troubleshooting Using Error Codes
Refer to Table 36 for information on the error codes that are gener-
ated 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
• Error codes 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 outdoor unit control board, and LG Monitoring
View (LGMV) Diagnostic Software.
• If two or more errors occur simultaneously, the lower error code
number is displayed rst.
• After error is resolved, the error code does not display.
Error Codes
Decoding the Error Display
The first and second number on the LED indicates error number.
Example: 21 = LED1 2x blink, LED2 1x blink.
Error Code Nomenclature Definitions
• MICOM: Non-volatile memory chip where unit setup information
is stored.
• EPROM: Non-volatile memory chip where device identication,
size, and factory dened default component operating param-
eters are stored.
Figure 73: Example of Ceiling Cassette IDU LEDs (appearance may
differ depending on model).
Error
Code
Description
No. of Times Indoor Unit
LEDs Blink
LED1
(Plasma LED)
LED2
(Power LED)
1 Indoor unit room temperature sensor error
1X -
2 Indoor unit inlet pipe sensor error 2X -
4 Float switch error (optional) 4X -
5 Communication error between indoor unit and outdoor units - 5X
6 Indoor unit outlet pipe sensor error 6X -
9 Indoor unit EPROM error 9X -
10 Indoor unit BLDC motor fan lock - 1X
12 Indoor unit middle pipe sensor error 2X 1X
Table 36: Multi Zone Ceiling Cassette Indoor Unit Error Codes.
TROUBLESHOOTING
Ceiling Cassette Indoor Unit Display
Number of Blinks = Error Code
Wall-Mounted Indoor Unit Displays
Number of Blinks = Error Code
Cooling
Heating
Plasma
Standard
Power
Plasma
Preheating
LED 1:
Units Place
LED 2:
Tens Place
Art Cool Mirror
Receiver
Receiver
LED 1
Units Place
LED 2
Tens Place
LED 1: Units PlaceLED 2: Tens Place