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SiUS331708EA
Troubleshooting by Error Code
Service Diagnosis
216
4.43 Inverter Compressor Overcurrent
Error Code
L8
Applicable
Models
All outdoor units
Method of Error
Detection
Error is detected by current flowing in the power transistor.
Error Decision
Conditions
Overload in the compressor is detected.
Supposed
Causes
Compressor overload
Broken wire inside compressor
Defective PCB
Disconnection of compressor
Troubleshooting
NO
YES
YES
NO
Check if the
compressor lead wires are
normal.
Insulation
resistance of the
compressor is 100 k
Ω
or below.
YES
NO
NO
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Compressor coils are
disconnected.
Connect the compressor lead
wires then restart the operation.
CHECK 4
Check if the power transistor
is normal.
YES
Replace the compressor
lead wires.
Replace the inverter
compressor.
Replace the inverter
compressor.
Replace the
outdoor main PCB
(A1P).
NO
YES
Error code
L8
is
displayed again.
Continue the operation.
Inspection of the
compressor.
CHECK 4
Summary of Contents for RXSQ24TAVJU
Page 1: ...Service Manual SiUS331708EA RXSQ24 36 48 60TAVJU Heat Pump 60 Hz...
Page 290: ...Wiring Diagrams SiUS331708EA 277 Appendix RXSQ48TAVJU 3D109546A...
Page 291: ...SiUS331708EA Wiring Diagrams Appendix 278 RXSQ60TAVJU 3D109547A...
Page 295: ...SiUS331708EA Wiring Diagrams Appendix 282 FXZQ05 07 09 12 15 18TAVJU 3D110443A...
Page 298: ...Wiring Diagrams SiUS331708EA 285 Appendix FXEQ07 09 12 15 18 24PVJU 3D098557A...
Page 300: ...Wiring Diagrams SiUS331708EA 287 Appendix FXSQ05 07 09 12 15 18 24 30 36 48 54TAVJU 3D110467B...
Page 301: ...SiUS331708EA Wiring Diagrams Appendix 288 FXMQ07 09 12 15 18 24 30 36 48 54PBVJU 3D093209B...
Page 302: ...Wiring Diagrams SiUS331708EA 289 Appendix FXHQ12 24 36MVJU 3D048116C...
Page 303: ...SiUS331708EA Wiring Diagrams Appendix 290 FXAQ07 09 12 18 24PVJU 3D075354C...
Page 309: ...SiUS331708EA Wiring Diagrams Appendix 296 VAM1200GVJU 3D073270D...