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SiEN18-622
Troubleshooting for Outdoor Unit
Troubleshooting
375
7.14 Malfunction of Subcooling Heat Exchanger Thermistor
(R6T)
Remote Control
Display
J9
Applicable
Models
AII outdoor unit models
Method of
Malfunction
Detection
Malfunction is detected according to the temperature detected by subcooling heat exchanger
gas pipe thermistor.
Malfunction
Decision
Conditions
When the subcooling heat exchanger gas pipe thermistor is short circuited or open.
Supposed
Causes
Faulty subcooling heat exchanger gas pipe thermistor (R6T)
Faulty outdoor unit PCB
Troubleshooting
∗
Refer to “Thermistor Resistance / Temperature Characteristics” table on P407.
(V
3
075)
Caution
NO
NO
YE
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.
Connect connector
a
nd oper
a
te
u
nit
a
g
a
in.
Repl
a
ce thermi
s
tor (R6T).
Repl
a
ce o
u
tdoor
u
nit PC
b
o
a
rd
(A1P).
I
s
the
connector for
sub
cooling he
a
t
exch
a
nger g
as
pipe
thermi
s
tor connected
to o
u
tdoor
u
nit PC
b
o
a
rd (A1P)?
I
s
the re
s
i
s
t
a
nce
me
asu
red
a
fter
removing the thermi
s
tor
(R6T) from o
u
tdoor
u
nit
PC
b
o
a
rd norm
a
l?
(
3
.5k
Ω
to
3
60k
Ω
)
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 ...