Service Manual 281
Self-diagnosis function
Trouble shooting Flow
Fault diagnosis and Trouble shooting guide
104
111
142
Error Item
Error
Display No.
Major Error Occurrence Cause
Meaning
Communication error
between outdoor units
Communication error
between outdoor units
(main outdoor unit -
sub outdoor unit)
• No connection of communication line
• Short or fusing of communication line
• Poor outdoor unit PCB
• Power of outdoor unit is not applied
No
Check or reconnect
communication lines
Yes
Is connection status of the
communication line normal?
No
Check power line of the outdoor unit
Yes
Is power of the outdoor unit
applied?
Check or replace the outdoor unit PCB
Summary of Contents for multi V PLUS
Page 21: ...Service Manual 21 Indoor Unit Indoor Units ...
Page 74: ...74 Indoor Unit ...
Page 86: ...86 Indoor Unit ...
Page 142: ...142 Indoor Unit ...
Page 160: ...160 Indoor Unit ...
Page 179: ...Service Manual 179 Outdoor unit ...
Page 239: ...Service Manual 239 Wiring Diagrams 5 8 60Hz 220V Main Outdoor Unit 8HP 10HP 12HP ...
Page 245: ...Service Manual 245 Trouble shooting guide ...
Page 296: ...296 Trouble Shooting Guide ...
Page 297: ...Service Manual 297 Appendix ...
Page 303: ...Service Manual 303 Exploded View Replacement Parts List ...