Troubleshooting by Error Code
SiUS341802E
239
Service Diagnosis
2.48 Inverter Compressor Instantaneous Overcurrent
Error Code
L5
Applicable
Models
All outdoor unit models
Method of Error
Detection
Detect current flowing through the power transistor.
Error Decision
Conditions
When instantaneously overcurrent flows 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
Compressor inspection
Power OFF
Open the stop valve.
YES
NO
Is the stop valve open?
YES
YES
Are
wiring and wire
connections to the relevant
compressor
normal?
Rectify the wiring and
wire connections.
NO
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Are the
leads of the relevant
compressor
normal?
Replace the leads of the
relevant compressor.
NO
A
Check the compressor cable
for disconnection and flaws.
NO
The
insulation
resistance of the relevant
compressor is 100 k
Ω
or less.
Replace the
compressor.
YES
The coil
of the relevant
compressor has caused
wiring disconnection
in it.
Replace the
compressor.
YES
NO
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Содержание Aurora Series
Страница 316: ...Wiring Diagrams SiUS341802E 303 Appendix 1 Wiring Diagrams 1 1 Outdoor Unit RXLQ72TATJU 2D112580A ...
Страница 317: ...SiUS341802E Wiring Diagrams Appendix 304 RXLQ96 120TATJU 2D112581A ...
Страница 318: ...Wiring Diagrams SiUS341802E 305 Appendix RXLQ72TAYDU 2D112582A ...
Страница 319: ...SiUS341802E Wiring Diagrams Appendix 306 RXLQ96 120TAYDU 2D112583A ...
Страница 320: ...Wiring Diagrams SiUS341802E 307 Appendix RXLQ72 96 120TAYCU RXYQ72 96 120 144 168TAYCU 2D112579A ...
Страница 330: ...Wiring Diagrams SiUS341802E 317 Appendix 1 3 2 Energy Recovery Ventilator VAM Series VAM300 470 600GVJU 3D073269C ...
Страница 331: ...SiUS341802E Wiring Diagrams Appendix 318 VAM1200GVJU 3D073270C ...
Страница 332: ...Revision History Month Year Version Revised contents 04 2018 SiUS341802E First edition ...