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SiEN18-622
Troubleshooting for Outdoor Unit
Troubleshooting
395
7.31 Malfunction of Transmission between Main and Sub
Remote Controls
Remote Control
Display
U8
Applicable
Models
AII indoor unit models
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
Malfunction of transmission between main and sub remote control
Connection between sub remote controls
Defect of remote control PCB
Troubleshooting
Caution
(V2
8
25)
YE
S
YE
S
YE
S
NO
NO
NO
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.
U
s
ing 2-remote
control
s
control.
SS
1of
b
oth remote
control
s
i
s s
et to
"
S
UB."
SS
1 of
remote control PC
b
o
a
rd
s
i
s s
et to "MAIN."
S
et
SS
1 to "MAIN"; the
power
su
pply off once
a
nd
then
ba
ck on.
T
u
rn the power off
a
nd then
ba
ck on. If
a
m
a
lf
u
nction
occ
u
r
s
, repl
a
ce the remote
control PC
b
o
a
rd.
S
et one remote control to
"MAIN"; the power
su
pply
off once
a
nd then
ba
ck on.
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 ...