SiENBE34-703
Troubleshooting by Indication on the remote control
Troubleshooting
167
Troubleshooting
∗
1: Inverter’s Power Transistors Check : Refer to information on P.228, 229.
∗
: Refer to information on P.195.
Be
su
re to t
u
rn off power
s
witch
b
efore connect or di
s
connect connector,
or p
a
rt
s
d
a
m
a
ge m
a
y
b
e occ
u
rred.
Caution
When the compre
ss
or i
s
r
u
nning,
me
asu
re the volt
a
ge
b
etween
+
a
nd - of electrolytic c
a
p
a
citor
(C+, C-).
(
S
2605)
∗
Check the inverter power
tr
a
n
s
i
s
tor.
∗
1
Repl
a
ce the inverter PC
b
o
a
rd
ass
y (A2P).
Check for the PC
b
o
a
rd
condition
s
.
In c
as
e of
s
ignific
a
nt f
a
il
u
re,
the PC
b
o
a
rd m
a
y h
a
ve got
f
au
lty d
u
e to f
au
lty
compre
ss
or. Con
s
e
qu
ently,
even if the PC
b
o
a
rd i
s
repl
a
ced, it m
a
y get f
au
lty
a
g
a
in. To
a
void th
a
t, recheck
the compre
ss
or for
gro
u
nding
a
nd for
a
ny
b
roken wire
s
. F
u
rthermore,
even
a
fter repl
a
cing the PC
b
o
a
rd, c
a
rry o
u
t in
s
pection
s
on the compre
ss
or.
Correct the power
su
pply
volt
a
ge
s
.
If L2 or Ph
as
e N i
s
open,
repl
a
ce the
s
witch
b
ox.
Repl
a
ce the f
a
n motor
Monitor the volt
a
ge
(In
s
t
a
nt
a
neo
us
volt
a
ge drop)
Repl
a
ce the inverter PC
b
o
a
rd
(A1P).
I
s
the me
asu
red volt
a
ge
220 VDC or more?
Check No.
3
I
s
the re
s
i
s
t
a
nce
ab
ove
s
t
a
nd
a
rd v
a
l
u
e?
I
s
the power tr
a
n
s
i
s
tor
f
au
lty?
H
a
ve the
power
su
pply
volt
a
ge
s
b
etween L1
a
nd L2,
L2
a
nd L
3
,
a
nd L1
a
nd L
3
f
a
llen within
the r
a
nge of
38
0 to 415V±10
%
(50 Hz)
a
nd
b
etween L
a
nd N within the r
a
nge
of 220 to 240V±10
%
(50 Hz)?
NO
NO
NO
NO
YE
S
YE
S
YE
S
YE
S
Check No.3
Summary of Contents for VRVIII-S
Page 1: ...SiENBE34 703 Basic Training Manual R 410A Heat Pump 50Hz Service Manual...
Page 11: ...Introduction SiENBE34 703 x...
Page 113: ...Field Setting SiENBE34 703 102 Test Operation...
Page 207: ...Troubleshooting by Indication on the Unified ON OFF Control SiENBE34 703 196 Troubleshooting...
Page 215: ...Wiring Diagrams SiENBE34 703 204 Appendix 2 3 Indoor Unit FXCQ20 25 32 63M8...
Page 216: ...SiENBE34 703 Wiring Diagrams Appendix 205 FXCQ40 50 80 125M8V3...
Page 217: ...Wiring Diagrams SiENBE34 703 206 Appendix FXFQ25 32 40 50 63 80 100 125P7VE...
Page 218: ...SiENBE34 703 Wiring Diagrams Appendix 207 FXZQ20 25 32 40 50M8V1...
Page 221: ...Wiring Diagrams SiENBE34 703 210 Appendix FXDQ20 25M8V3...
Page 222: ...SiENBE34 703 Wiring Diagrams Appendix 211 FXSQ20 25 32 40 50 63 80 100 125M8V3...
Page 232: ...SiENBE34 703 Option List Appendix 221...
Page 235: ...Example of Connection SiENBE34 703 224 Appendix...
Page 241: ...Method of Replacing the Inverter s Power Transistors Modules SiBE34 703 230 Appendix...
Page 261: ...RXYSQ4 5 6 P7Y1B SiENBE34 703 250 Removal Procedure...
