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SiEN18-622
Troubleshooting for Outdoor Unit
Troubleshooting
361
Troubleshooting
Check No.01
Refer to P.404
NO
YE
S
YE
S
YE
S
NO
NO
YE
S
NO
YE
S
NO
+5V
(4)
(
3
)
(2)
(1)
Red
White
Check for the point
s s
hown
b
elow.
1
I
s
the
s
top v
a
lve open?
2
I
s
the HP
S
connector properly connected to the
m
a
in PCB?
3
Doe
s
the high pre
ssu
re
s
witch h
a
ve contin
u
ity?
Are the
three point
s
ab
ove OK?
· Mo
u
nt
a
pre
ssu
re g
au
ge on the high-pre
ssu
re
s
ervice port.
· Connect the
S
ervice Checker.
· Re
s
et the oper
a
tion
us
ing the remote control,
a
nd then re
s
t
a
rt the oper
a
tion.
Doe
s
the
s
top
d
u
e to m
a
lf
u
nction (E
3
)
rec
u
r?
I
s
the HP
S
oper
a
ting v
a
l
u
e norm
a
l
(i.e., 4.0MP
a
)?
Are the
ch
a
r
a
cteri
s
tic
s
of the high
pre
ssu
re
s
en
s
or norm
a
l?
(
S
ee
*
1.)
I
s
the
pre
ssu
re detected with
the PCB norm
a
l? (
S
ee
*
2.)
Repl
a
ce the HP
S
.
Rectify defective point
s
, if
a
ny.
Repl
a
ce the high pre
ssu
re
s
en
s
or.
Repl
a
ce the m
a
in PCB.
· The high pre
ssu
re
s
en
s
or i
s
norm
a
l,
a
nd the pre
ssu
re detected with the PCB i
s a
l
s
o norm
a
l.
· The high pre
ssu
re h
as
re
a
lly
b
ecome high.
Check No.01
Referring to inform
a
tion on p
a
ge 404, remove the c
aus
e
s b
y
which the high pre
ssu
re h
as b
ecome high.
*
1: M
a
ke
a
comp
a
ri
s
on
b
etween the volt
a
ge of the pre
ssu
re
s
en
s
or
a
nd th
a
t re
a
d
b
y the
pre
ssu
re g
au
ge.
(A
s
to the volt
a
ge of the pre
ssu
re
s
en
s
or, m
a
ke me
asu
rement of volt
a
ge
a
t the
connector,
a
nd then convert it to pre
ssu
re
a
ccording to inform
a
tion on p
a
ge 409.)
*
2: M
a
ke
a
comp
a
ri
s
on
b
etween the high pre
ssu
re v
a
l
u
e checked with the
S
ervice Checker
a
nd the volt
a
ge of the pre
ssu
re
s
en
s
or (
s
ee
*
1).
*3
: M
a
ke me
asu
rement of volt
a
ge of the pre
ssu
re
s
en
s
or.
Connector for high
pre
ssu
re
s
en
s
or (Red)
Micro controller
A/D inp
u
t
M
a
ke me
asu
rement of DC
volt
a
ge
b
etween the
s
e wire
s
.
High
pre
ssu
re
s
en
s
or
Bl
a
ck
Caution
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.
Summary of Contents for FTKS50BVMB
Page 1: ...SiEN18 622 E Series Service Manual Applied Models zSuper Multi Plus Cooling Only Heat Pump ...
Page 105: ...Refrigerant Flow for Each Operation Mode SiEN18 622 92 Refrigerant Circuit ...
Page 157: ...Indoor Unit SkyAir Models SiEN18 622 144 Function ...
Page 312: ...SiEN18 622 Ceiling Mounted Cassette Type System Configuration 300 ...
Page 424: ...Method of Replacing The Inverter s Power Transistors Modules SiEN18 622 412 Troubleshooting ...
Page 446: ...Wiring Diagrams SiEN18 622 434 Appendix ...
Page 452: ...SiEN18 622 vi Index ...