278
Trouble Shooting Guide
Self-diagnosis function
Trouble shooting Flow
Fault diagnosis and Trouble shooting guide
53
Error Item
Error
Display No.
Major Error Occurrence Cause
Meaning
Communication error
(indoor unit - main PCB)
If failing to receive
indoor unit signal at
main PCB
• No connection of communication line
• Short or fusing of communication line
• Poor outdoor unit PCB or indoor unit PCB
No
Check and connect power line.
Yes
Is power supplied to all indoor units?
No
Check and connect the
communication line.
Yes
Are communication
lines of indoor units normal?
No
Perform automatic addressing again.
Yes
Is automatic addressing
performed accurately?
No
Check or replace the main PCB
Yes
Is communication circuit part of the
outdoor unit normal?
Check or replace the indoor unit PCB
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 ...