Troubleshooting by Error Code
SiUS342004EB
337
Part 6 Service Diagnosis
YES
NO
YES
NO
The
m
u
lti transmission
wirings to m
u
lti sla
v
e 2
ha
v
e ca
u
sed wiring disconnection in
them or are
b
eing
disconnected.
Replace the o
u
tdoor
u
nit main
PCB (A1P) for m
u
lti sla
v
e 2.
Disconnect the o
u
tdoor
u
nit m
u
lti
transmission wirings, and then
reset the power s
u
pply.
Replace the o
u
tdoor
u
nit main
PCB (A1P).
YES
NO
The
m
u
lti transmission
wirings to m
u
lti sla
v
e 1 ha
v
e
ca
u
sed wiring disconnection in
them or are
b
eing
disconnected.
Modify the o
u
tdoor
u
nit m
u
lti
transmission wirings, and then
reset the power s
u
pply.
Replace the o
u
tdoor
u
nit main
PCB (A1P) for m
u
lti sla
v
e 1.
Modify the o
u
tdoor
u
nit m
u
lti
transmission wirings, and then
reset the power s
u
pply.
Diagnosis Flowchart-3
(Transmission error
b
etween master
and sla
v
e 1)
Error code
S
ub
code
U7-03
Diagnosis Flowchart-4
(Transmission error
b
etween master
and sla
v
e 2)
Error code
S
ub
code
U7-04
Diagnosis Flowchart-5
(M
u
lti system error)
Error code
S
ub
code
U7-05
M
u
lti o
u
tdoor
u
nit
system?
Summary of Contents for VRV RXYQ72-384XAYCA
Page 1: ...Service Manual RXYQ72 384XAYCA RXYQ72 384XBYCA Heat Pump 60 Hz SiUS342004EB...
Page 395: ...SiUS342004EB Wiring Diagrams Part 7 Appendix 388 FXFQ07 09 12 15 18 24 30 36 48TVJU 3D086460B...
Page 397: ...SiUS342004EB Wiring Diagrams Part 7 Appendix 390 FXZQ05 07 09 12 15 18TAVJU 3D110443A...
Page 401: ...SiUS342004EB Wiring Diagrams Part 7 Appendix 394 FXEQ07 09 12 15 18 24PVJU 3D098557A...
Page 402: ...Wiring Diagrams SiUS342004EB 395 Part 7 Appendix FXDQ07 09 12 18 24MVJU C 3D050501C...
Page 409: ...SiUS342004EB Wiring Diagrams Part 7 Appendix 402 FXHQ12 24 36MVJU 3D048116C...
Page 410: ...Wiring Diagrams SiUS342004EB 403 Part 7 Appendix FXAQ07 09 12 18 24PVJU 3D075354F...
Page 418: ...Wiring Diagrams SiUS342004EB 411 Part 7 Appendix VAM1200GVJU 3D073270D...
