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Troubleshooting for SkyAir Indoor Unit
SiEN18-622
348
Troubleshooting
5.13 Transmission Error (between Main and Sub Remote
Control)
Remote Control
Display
U8
Applicable
Models
FFQ, FCQ, FBQ, FHQ
Method of
Malfunction
Detection
In case of controlling with 2- remote control, check the system using microcomputer if signal
transmission between indoor unit and remote control (main and sub) is normal.
Malfunction
Decision
Conditions
Normal transmission does not continue for specified period.
Supposed
Causes
Transmission error between Main remote control and Sub remote control
Connection among “Sub” remote controls
Faulty remote control PCB
Troubleshooting
NO
NO
NO
YE
S
YE
S
YE
S
(
S
2042)
Controlling with
2-remote control
Both
SS
-1
s
witche
s
on remote
control
s a
re t
u
rned
to "
Sub
"
SS
-1
s
witch on
remote control PCB
i
s
t
u
rned to "M
a
in"
T
u
rn the
SS
-1
s
witch of one
remote control to "M
a
in".
T
u
rn OFF the power
su
pply,
a
nd re
s
t
a
rt oper
a
tion
T
u
rn OFF the power once
a
nd re
s
t
a
rt oper
a
tion.
Repl
a
ce remote control PCB
if
a
ny error i
s
gener
a
ted.
T
u
rn the
SS
-1
s
witch of one
remote control to "M
a
in".
T
u
rn OFF the power
su
pply,
a
nd re
s
t
a
rt oper
a
tion.
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 ...