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Troubleshooting for Outdoor Unit
SiEN18-622
402
Troubleshooting
7.36 System is not Set yet
Remote Control
Display
UF
Applicable
Models
All indoor unit models
All outdoor unit models
Method of
Malfunction
Detection
On check operation, the number of indoor units in terms of transmission is not corresponding to
that of indoor units that have made changes in temperature.
Malfunction
Decision
Conditions
The malfunction is determined as soon as the abnormality aforementioned is detected through
checking the system for any erroneous connection of units on the check operation.
Supposed
Causes
Improper connection of transmission wiring between indoor-outdoor units and outdoor-
outdoor units
Failure to execute check operation
Defect of indoor unit PC board
Stop valve is left in closed
Troubleshooting
Note:
Wiring check operation may not be successful if carried out after the outdoor unit has been off
for more than 12 hours, or if it is not carried out after running all connected indoor units in the
fan mode for at least an hour.
Caution
(V2
83
0)
I
s
indoor - o
u
tdoor
a
nd o
u
tdoor - o
u
tdoor
u
nit
tr
a
n
s
mi
ss
ion wiring
norm
a
l?
Repl
a
ce indoor
u
nit PC
b
o
a
rd.
Wiring check oper
a
tion m
a
y
not h
a
ve
b
een c
a
rried o
u
t
su
cce
ss
f
u
lly.
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 not r
u
n for
u
p to
12 min
u
te
s
.
YE
S
NO
YE
S
NO
NO
YE
S
I
s
the
check oper
a
tion
c
a
rried o
u
t?
I
s
indoor-
o
u
tdoor
a
nd o
u
tdoor-o
u
tdoor
u
nit tr
a
n
s
mi
ss
ion
wiring norm
a
l?
Open
s
top v
a
lve.
YE
S
NO
Are the
s
top
v
a
lve
s
opened?
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 ...