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Troubleshooting for Outdoor Unit
SiEN18-622
370
Troubleshooting
7.9
Malfunction of Thermistor for Outdoor Air (R1T)
Remote Control
Display
H9
Applicable
Models
AII outdoor unit models
Method of
Malfunction
Detection
Malfunction is detected from the temperature detected by the outdoor air thermistor.
Malfunction
Decision
Conditions
When the outside air temperature thermistor has short circuit or open circuit.
Supposed
Causes
Defect of thermistor (R1T) for outdoor air
Defect of outdoor unit PCB (A1P)
Troubleshooting
∗
Refer to “Thermistor Resistance / Temperature Characteristics” table on P407.
(V
3
070)
Caution
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.
NO
NO
YE
S
YE
S
Connector i
s
connected to X11A
ofo
u
tdoor PC
b
o
a
rd
(A1P).
Connect the connector
a
nd t
u
rn
on
a
g
a
in.
Repl
a
ce the thermi
s
tor (R1T).
Repl
a
ce 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 (R1T) from
the o
u
tdoor
u
nit PC
b
o
a
rd. (
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 ...