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Troubleshooting for Outdoor Unit
SiEN18-622
372
Troubleshooting
7.11 Malfunction of Thermistor (R3T, R5T) for Suction
Pipe1, 2
Remote Control
Display
J5
Applicable
Models
AII outdoor unit models
Method of
Malfunction
Detection
Malfunction is detected from the temperature detected by the thermistor for suction pipe 1, 2.
Malfunction
Decision
Conditions
When a short circuit or an open circuit in the thermistor for suction pipe 1, 2 are detected.
Supposed
Causes
Defect of thermistor (R3T, R5T) for outdoor unit suction pipe
Defect of outdoor unit PCB (A1P)
Troubleshooting
∗
Refer to thermistor resistance / temperature characteristics table on P407.
(V
3
07
3
)
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 the thermi
s
tor
a
nd
t
u
rn on
a
g
a
in.
Repl
a
ce the thermi
s
tor
(R
3
T, R5T).
Repl
a
ce o
u
tdoor
u
nit PC
b
o
a
rd
(A1P).
Connector
of the thermi
s
tor for
su
ction pipe1, 2 i
s
connected to o
u
tdoor
u
nit PC
b
o
a
rd
(A1P).
Re
s
i
s
t
a
nce i
s
norm
a
l when
me
asu
red
a
fter
di
s
connecting the thermi
s
tor
(R
3
T, R5T) from
the o
u
tdoor
u
nit PC
b
o
a
rd. (
3
.5k
Ω
~
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 ...