Different Operation Mode Between Indoor Units - LG multi V PLUS Service Manual

Self-diagnosis function
Fault diagnosis and Trouble shooting guide
Error Display Error
No.
Item
Different Where operating in different
operation operation mode from previously
mode operated indoor unit
07
between
indoor
units
Failure Checking Method
Are both operation mode of the
indoor unit and that of the outdoor
Change so that operation mode of
both the indoor unit and the outdoor
Error
Error Display
No.
Item
Indoor Problems occur at EEPROM
unit within the indoor unit°Øs main
EEPROM PCB assembly
09
error
Failure Checking Method
266 Trouble Shooting Guide
Meaning
unit same?
Yes
unit becomes same
Yes
Check or replace
the indoor unit PCB
Meaning
Check and replace
the indoor unit PCB.
Major Error Occurrence Cause
This error occurs if an indoor unit which is off
state is to operate in heating mode when one or
more indoor units are operated in cooling mode
and vice versa.
Change the operation mode of
No
indoor unit to the same operation
mode of outdoor unit
Major Error Occurrence Cause
• Occurrence of poor communication between
MICOM and EEPROM on the indoor unit main
PCB assembly.
• Occurrence when no serial No. data exist within
EEPROM.