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SiEN18-622
Troubleshooting for Outdoor Unit
Troubleshooting
403
7.37 Malfunction of System, Refrigerant System Address
Undefined
Remote Control
Display
UH
Applicable
Models
All indoor unit models
All outdoor unit models
Method of
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes
Improper connection of transmission wiring between outdoor unit and outdoor unit outside
control adapter
Defect of indoor unit PCB
Defect of outdoor unit PCB (A1P)
Troubleshooting
Caution
(V2
83
1)
NO
YE
S
YE
S
NO
YE
S
NO
Doe
s a
m
a
lf
u
nction occ
u
r?
NO
YE
S
NO
Doe
s
a
m
a
lf
u
nction
occ
u
r even
a
fter 12
min
u
te
s
el
a
p
s
e
s
from the
time when electricity i
s
introd
u
ced to indoor
a
nd o
u
tdoor
u
nit
s
?
YE
S
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.
I
s
electricity
b
eing introd
u
ced
for the fir
s
t time
a
fter
in
s
t
a
ll
a
tion or
a
fter
a
n
indoor or o
u
tdoor
u
nit
PC
b
o
a
rd h
as b
een
repl
a
ced?
I
s
indoor - o
u
tdoor
a
nd
o
u
tdoor - indoor
u
nit
tr
a
n
s
mi
ss
ion wiring
norm
a
l?
After fixing incorrect wiring,
p
us
h
a
nd hold the RE
S
ET
bu
tton on the o
u
tdoor
u
nit
PC
b
o
a
rd for 5
s
econd
s
Doe
s a
"UH" m
a
lf
u
nction occ
u
r
for
a
ll indoor
u
nit
s
in the
s
y
s
tem?
After fixing incorrect wiring,
p
us
h
a
nd hold the RE
S
ET
bu
tton on the m
as
ter o
u
tdoor
u
nit PC
b
o
a
rd for 5
s
econd
s
.
*
The
u
nit will nog r
u
n for
u
p
to 12 min
u
te
s
.
Repl
a
ce indoor
u
nit PC
b
o
a
rd.
Repl
a
ce o
u
tdoor
u
nit PC
b
o
a
rd (A1P).
Norm
a
l
Norm
a
l
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 ...