Service Manual 267
Self-diagnosis function
No
No
Is compressor
insulation resistance or motor coil
resistance normal?
Replace compressor.
Check or replace fuse
or bridge diode
Replace IPM.
Check the outdoor unit fan.
Check input power.
Reconnect terminal.
Yes
Yes
Yes
No
Yes
No
No
Yes
Yes
No
Is IPM input voltage normal?
Is IPM normal?
Is the outdoor unit fan normal?
Is input voltage normal?
Check pipe clogging or refrigerant.
Is terminal connection
status normal?
Failure Checking Method
Fault diagnosis and Trouble shooting guide
Occurrence
of excessive
current
in inverter
compressor
21
• Excessive current flows in compressor power
supply (U, V, W)
• Excessive heat of IPM
• Excessive charge of refrigerant
• Insulation breaking of compressor
• Low input voltage
• Pulled out or loose of inverter compressor
terminal
Poor inverter
compressor, poor
drive of inverter
element (IPM)
Error Item
Error
Display No.
Major Error Occurrence Cause
Meaning
Содержание multi V PLUS
Страница 21: ...Service Manual 21 Indoor Unit Indoor Units ...
Страница 74: ...74 Indoor Unit ...
Страница 86: ...86 Indoor Unit ...
Страница 142: ...142 Indoor Unit ...
Страница 160: ...160 Indoor Unit ...
Страница 179: ...Service Manual 179 Outdoor unit ...
Страница 232: ...232 Outdoor Unit Wiring Diagrams 5 Wiring Diagrams 5 1 50Hz 380V Main Outdoor Unit 5HP 6HP 8HP ...
Страница 235: ...Service Manual 235 Wiring Diagrams 380V AC 60Hz 3Ø 5 4 60Hz 380V Main Outdoor Unit 5HP 6HP 8HP ...
Страница 239: ...Service Manual 239 Wiring Diagrams 5 8 60Hz 220V Main Outdoor Unit 8HP 10HP 12HP ...
Страница 245: ...Service Manual 245 Trouble shooting guide ...
Страница 296: ...296 Trouble Shooting Guide ...
Страница 297: ...Service Manual 297 Appendix ...
Страница 303: ...Service Manual 303 Exploded View Replacement Parts List ...