256
Trouble Shooting Guide
Self-diagnosis function
Compres
sor
Outdoor
fan
Outdoor
LEV
No operation
Stop during operation
Loud noise during operation
High pressure error during
cold operation
No heating condition.
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
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
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.
Parts
Phenomena
Cause
Check and Countermeasures
If the system failed, error code is displayed on 7 segments LED of the wired remote control and the outdoor unit
control board.
Summary of Contents for multi V PLUS
Page 21: ...Service Manual 21 Indoor Unit Indoor Units ...
Page 74: ...74 Indoor Unit ...
Page 86: ...86 Indoor Unit ...
Page 142: ...142 Indoor Unit ...
Page 160: ...160 Indoor Unit ...
Page 179: ...Service Manual 179 Outdoor unit ...
Page 239: ...Service Manual 239 Wiring Diagrams 5 8 60Hz 220V Main Outdoor Unit 8HP 10HP 12HP ...
Page 245: ...Service Manual 245 Trouble shooting guide ...
Page 296: ...296 Trouble Shooting Guide ...
Page 297: ...Service Manual 297 Appendix ...
Page 303: ...Service Manual 303 Exploded View Replacement Parts List ...