Si39-502A
Troubleshooting by Indication on the Remote Controller
Troubleshooting
197
3.40
“
U1
”
Reverse Phase, Open Phase
Remote
Controller
Display
U1
Applicable
Models
RXYQ8~30MY1K (E), YLK (E)
3 phase outdoor unit only
Method of
Malfunction
Detection
The phase of each phase are detected by reverse phase detection circuit and right phase or
reverse phase are judged.
Malfunction
Decision
Conditions
When a significant phase difference is made between phases.
Supposed
Causes
Power supply reverse phase
Power supply open phase
Defect of outdoor PC board (A1P)
Troubleshooting
(V2820)
Operation
is normal if one
place of power supply
line phase is
replaced.
Fix the open phase. Requires
inspection of field power supply
section.
Reverse phase
Counter measure of the problem is
completed by phase replacement.
Replace outdoor unit PC board
(A1P).
YES
YES
NO
NO
There
is an open phase
at the power supply
terminal section (X1M)
of the outdoor
unit.
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Summary of Contents for VRV II RXYQ8MY1K
Page 53: ...Specifications Si39 502A 42 Specifications...
Page 143: ...Field Setting Si39 502A 132 Test Operation...
Page 258: ...Si39 502A Wiring Diagrams for Reference Appendix 247 FXCQ40M 50M 80M 125MVE 3D039557A...
Page 260: ...Si39 502A Wiring Diagrams for Reference Appendix 249 FXKQ25M 32M 40M 63MVE 3D039564A...
Page 264: ...Si39 502A Wiring Diagrams for Reference Appendix 253 FXMQ40M 50M 63M 80M 100M 125MVE 3D039620A...
Page 265: ...Wiring Diagrams for Reference Si39 502A 254 Appendix FXMQ200M 250MVE 3D039621A...
Page 266: ...Si39 502A Wiring Diagrams for Reference Appendix 255 FXHQ32M 63M 100MVE 3D039801C...
Page 267: ...Wiring Diagrams for Reference Si39 502A 256 Appendix FXAQ20M 25M 32M 40M 50M 63MVE 3D034206A...
Page 269: ...Wiring Diagrams for Reference Si39 502A 258 Appendix FXUQ71M 100M 125MV1 3D044973...
Page 270: ...Si39 502A Wiring Diagrams for Reference Appendix 259 FXAQ20MH 25MH 32MH 40MH 50MHV1 3D046348A...
Page 271: ...Wiring Diagrams for Reference Si39 502A 260 Appendix FXLQ20MH 25MH 32MH 40MH 50MHV1 3D046787A...
Page 272: ...Si39 502A Wiring Diagrams for Reference Appendix 261 BEVQ50MVE 3D046579A Notes...
Page 273: ...Wiring Diagrams for Reference Si39 502A 262 Appendix BEVQ71M 100M 125MVE 3D044901A Notes...
Page 285: ...Piping Installation Point Si39 502A 274 Appendix...
Page 293: ...Method of Replacing The Inverter s Power Transistors and Diode Modules Si39 502A 282 Appendix...
Page 307: ...Si39 502A iv Index...
