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SiEN18-622
Troubleshooting for RA Indoor Unit
Troubleshooting
327
Troubleshooting
Check No.01
Refer to P.330
Check No.02
Refer to P.330
Repl
a
ce f
a
n motor.
Repl
a
ce indoor
u
nit PCB (1).
Repl
a
ce indoor
u
nit PCB (2).
Repl
a
ce f
a
n motor.
Note: Motor m
a
y
b
re
a
k when
the motor
connector i
s
di
s
connected
while
rem
a
ining
power
su
pply.
Repl
a
ce f
a
n motor
a
nd indoor PCB (2).
Repl
a
ce indoor
u
nit PCB (2).
Repl
a
ce f
a
n motor.
Repl
a
ce indoor
u
nit PCB (2).
Doe
s
it rot
a
te?
(R1214)
YE
S
YE
S
NO
NO
YE
S
NO
YE
S
NO
YE
S
NO
YE
S
NO
NO
NO
YE
S
YE
S
T
u
rn off power
su
pply
a
nd rot
a
te f
a
n
b
y h
a
nd.
Doe
s
f
a
n rot
a
te
s
moothly?
T
u
rn power ON
a
nd
oper
a
te f
a
n.
T
u
rn off power
su
pply
a
nd
di
s
connect f
a
n motor
connector, then t
u
rn
power ON.
Check No.01
Check o
u
tp
u
t of f
a
n
motor connector
I
s
motor
power volt
a
ge
DC 200V
gener
a
ted?
I
s
motor
control power
volt
a
ge DC 15V
gener
a
ted?
Check No.02
Check o
u
tp
u
t of indoor
u
nit PCB (1)
T
u
rn off power
su
pply
a
nd
di
s
connect f
a
n motor
connector, then t
u
rn
power ON
a
g
a
in.
I
s
motor control
power volt
a
ge DC 16V
gener
a
ted?
Check No.01
Check o
u
tp
u
t of f
a
n
motor connector
I
s
rot
a
tion
n
u
m
b
er comm
a
nd
volt
a
ge DC 5V
gener
a
ted?
S
top f
a
n motor.
Check No.01
Check o
u
tp
u
t of f
a
n
motor connector
I
s
rot
a
tion
n
u
m
b
er comm
a
nd p
u
l
s
e
gener
a
ted?
I
s
rot
a
tion
n
u
m
b
er comm
a
nd p
u
l
s
e
gener
a
ted?
Check No.01
Check o
u
tp
u
t of f
a
n
motor connector
Repl
a
ce indoor
u
nit PCB (1).
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 ...