Troubleshooting by Error Code
SiUS342004EB
327
Part 6 Service Diagnosis
Reference
CHECK 4
Refer to page 362.
The
in
v
erter PCB has
damage.
The
system enters
stand
b
y mode
b
efore the
o
u
tdoor fan starts
rotating.
The
system enters
stand
b
y mode
b
efore
completing the start
u
p
operation of the
compressor.
The error
U2
rec
u
rs.
NO
NO
YES
YES
NO
YES
NO
YES
Replace the in
v
erter PCB.
Check for wirings.
T
u
rn ON the power s
u
pply,
and then press the ON
bu
tton.
Replace the in
v
erter PCB.
If the in
v
erter PCB gets
se
v
erely damaged, the
compressor and the fan
motor (M1F, M2F) may
ha
v
e
b
een damaged.
Replace the in
v
erter PCB.
If the in
v
erter PCB gets
se
v
erely damaged, check
for the compressor.
Contin
u
e operation.
The error co
u
ld ha
v
e
res
u
lted from ca
u
ses s
u
ch
as instantaneo
u
s power
fail
u
re.
A
Is the power
transistor normal?
YES
NO
Replace the in
v
erter PCB
(A4P).
Connect and disconnect the
following connectors:
(1) X6A (In
v
erter PCB)
X28A (A1P)
(2) X63A (In
v
erter PCB)
X40A (A1P)
CHECK 4
The ins
u
lation
resistance of the fan
motor is less than
1 M
.
NO
YES
Replace the fan motor
(M1F, M2F).
If the motor gets se
v
erely
damaged, the in
v
erter
PCB sho
u
ld also
b
e
replaced.
Содержание VRV RXYQ72-384XAYCA
Страница 1: ...Service Manual RXYQ72 384XAYCA RXYQ72 384XBYCA Heat Pump 60 Hz SiUS342004EB...
Страница 366: ...Check SiUS342004EB 359 Part 6 Service Diagnosis Reference Reference CHECK 7 Refer to page 364 CHECK 8 Refer to page 365...
Страница 391: ...SiUS342004EB Wiring Diagrams Part 7 Appendix 384 1 Wiring Diagrams 1 1 Outdoor Unit RXYQ72 96 120 144 168XAYCA 2D119209B...
Страница 395: ...SiUS342004EB Wiring Diagrams Part 7 Appendix 388 FXFQ07 09 12 15 18 24 30 36 48TVJU 3D086460B...
Страница 396: ...Wiring Diagrams SiUS342004EB 389 Part 7 Appendix BYCQ125BGW1 Self Cleaning Decoration Panel for FXFQ T 3D076375A...
Страница 397: ...SiUS342004EB Wiring Diagrams Part 7 Appendix 390 FXZQ05 07 09 12 15 18TAVJU 3D110443A...
Страница 401: ...SiUS342004EB Wiring Diagrams Part 7 Appendix 394 FXEQ07 09 12 15 18 24PVJU 3D098557A...
Страница 402: ...Wiring Diagrams SiUS342004EB 395 Part 7 Appendix FXDQ07 09 12 18 24MVJU C 3D050501C...
Страница 403: ...SiUS342004EB Wiring Diagrams Part 7 Appendix 396 FXSQ05 07 09 12 15 18 24 30 36 48 54TAVJU C 3D110467C...
Страница 405: ...SiUS342004EB Wiring Diagrams Part 7 Appendix 398 FXMQ07 09 12 15 18 24 30 36 48 54PBVJU 3D093209B...
Страница 409: ...SiUS342004EB Wiring Diagrams Part 7 Appendix 402 FXHQ12 24 36MVJU 3D048116C...
Страница 410: ...Wiring Diagrams SiUS342004EB 403 Part 7 Appendix FXAQ07 09 12 18 24PVJU 3D075354F...
Страница 418: ...Wiring Diagrams SiUS342004EB 411 Part 7 Appendix VAM1200GVJU 3D073270D...