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SiEN18-622
Troubleshooting for SkyAir Indoor Unit
Troubleshooting
349
5.14 Malfunction of Field Setting Switch
Remote Control
Display
UA
Applicable
Models
FFQ, FCQ, FBQ, FHQ
Method of
Malfunction
Detection
Malfunction
Decision
Conditions
Incorrect field setting
Supposed
Causes
Indoor-Outdoor (BP) transmission line
Faulty remote control wiring
Troubleshooting
NO
NO
NO
YE
S
YE
S
YE
S
YE
S
NO
YE
S
NO
NO
YE
S
YE
S
NO
YE
S
NO
(Q0401)
I
s
the
remote control
connected to one
or more indoor
u
nit
s
?
I
s
the
remote control wiring
j
u
mped
b
etween indoor
u
nit
s
?
I
s
the field
s
etting
for p
a
ir / twin
s
y
s
tem correct?
Do the
microcomp
u
ter
norm
a
l monitor
s
HAP on
a
ll indoor
u
nit PCB
b
link?
T
u
rn the power
su
pply off once,
a
nd
ba
ck on to re
s
t
a
rt.
Doe
s
the
s
y
s
tem
cond
u
ct norm
a
l
oper
a
tion?
Are wiring
s
b
etween indoor
a
nd
BP
u
nit correctly
connected?
I
s
220
~
240
VAC
b
etween No.1
a
nd
3
of X2M termin
a
l
(indoor
u
nit)?
Are
the wiring
s
b
etween indoor
a
nd BP
u
nit
correctly
connected?
Connect the remote control
correctly.
Remove the j
u
mper.
S
et correctly.
Connect correctly.
Check the power
su
pply
s
y
s
tem in
s
ide the indoor
u
nit.
Co
u
ld
b
e incorrect wiring.
Check
a
g
a
in.
Connect correctly.
Repl
a
ce the indoor
u
nit
PCB.
Norm
a
l
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 ...