Troubleshooting by Error Code
SiUS342004EB
311
Part 6 Service Diagnosis
3.51 Compressor Instantaneous Overcurrent
Applicable
Models
All outdoor unit models
Error Code
L5
Method of Error
Detection
Detect current flowing through the power transistor.
Error Decision
Conditions
When overcurrent flows instantaneously through the power transistor.
Supposed
Causes
Defective compressor coil (such as wiring disconnection or insulation failure)
Compressor startup failure (mechanical lock)
Defective inverter PCB
Troubleshooting
Power OFF
Open the stop
v
al
v
e.
YES
NO
Is the stop
v
al
v
e open?
YES
YES
Are
wiring and wire
connections to the rele
v
ant
compressor
normal?
Rectify the wiring and
wire connections.
NO
Caution
Be s
u
re to t
u
rn off the power switch
b
efore connecting or disconnecting
connectors, or parts may
b
e damaged.
Are the
leads of the rele
v
ant
compressor normal?
Replace the leads of the
rele
v
ant compressor.
NO
A
Check the compressor ca
b
le
for disconnection and flaws.
NO
The
ins
u
lation
resistance of the rele
v
ant
compressor is 100 k
Ω
or less.
Replace the
compressor.
YES
The
internal wiring of
the compressor coil is
defecti
v
e.
Replace the
compressor.
YES
NO
Go to the next page.
Summary of Contents for VRV RXYQ72-384XAYCA
Page 1: ...Service Manual RXYQ72 384XAYCA RXYQ72 384XBYCA Heat Pump 60 Hz SiUS342004EB...
Page 395: ...SiUS342004EB Wiring Diagrams Part 7 Appendix 388 FXFQ07 09 12 15 18 24 30 36 48TVJU 3D086460B...
Page 397: ...SiUS342004EB Wiring Diagrams Part 7 Appendix 390 FXZQ05 07 09 12 15 18TAVJU 3D110443A...
Page 401: ...SiUS342004EB Wiring Diagrams Part 7 Appendix 394 FXEQ07 09 12 15 18 24PVJU 3D098557A...
Page 402: ...Wiring Diagrams SiUS342004EB 395 Part 7 Appendix FXDQ07 09 12 18 24MVJU C 3D050501C...
Page 409: ...SiUS342004EB Wiring Diagrams Part 7 Appendix 402 FXHQ12 24 36MVJU 3D048116C...
Page 410: ...Wiring Diagrams SiUS342004EB 403 Part 7 Appendix FXAQ07 09 12 18 24PVJU 3D075354F...
Page 418: ...Wiring Diagrams SiUS342004EB 411 Part 7 Appendix VAM1200GVJU 3D073270D...
