Self-Diagnosis Function - LG multi V PLUS Service Manual

Self-diagnosis function

Parts Phenomena
Compres No operation
sor
Stop during operation
Loud noise during operation
Outdoor High pressure error during
fan cold operation
Outdoor No heating condition.
LEV
Frequent defrost operation.
No operation sound even
after powering on
No heating condition.
Failure of outdoor heat
exchanger.
Low pressure error or dis-
charge error
If the system failed, error code is displayed on 7 segments LED of the wired remote control and the outdoor unit
control board.
256 Trouble Shooting Guide
Cause
Destruction of motor insulation
Destruction of motor insulation
Connection wire
Failure of fan motor.
Failure of air flow around outdoor
heat exchanger.
Poor wire contact
Poor coil
LEV clogged
LEV clogged
Check and Countermeasures
Measure resistor between com-
pressor power terminal and sash
Measure resistor between com-
pressor power terminal and sash
Check power wiring of the com-
pressor power.
Check that the fan rotates when
turning the outdoor unit on after
turning it off.
Remove obstacles around the
outdoor unit.
Check wire connectors.
Check resistance between ter-
minals.
Check the LEV.
Replace the LEV.
Replace the LEV.