SiEN18-622
Troubleshooting for Outdoor Unit
Troubleshooting
373
7.12 Malfunction of Thermistor (R4T) for Outdoor Unit Heat
Exchanger
Remote Control
Display
J6
Applicable
Models
AII outdoor unit models
Method of
Malfunction
Detection
Malfunction is detected from the temperature detected by the heat exchanger thermistor.
Malfunction
Decision
Conditions
When a short circuit or an open circuit in the heat exchange thermistor is detected.
Supposed
Causes
Defect of thermistor (R4T) for outdoor unit heat exchanger
Defect of outdoor unit PCB (A1P)
Troubleshooting
∗
Refer to thermistor resistance / temperature characteristics table on P407.
(V
3
074)
Caution
NO
NO
Repl
a
ce the thermi
s
tor (R7T).
YE
S
YE
S
Connector
i
s
connected to o
u
tdoor
u
nit PC
b
o
a
rd
(A1P).
Repl
a
ce o
u
tdoor
u
nit PC
b
o
a
rd
(A1P).
Connect the thermi
s
tor
a
nd t
u
rn
on
a
g
a
in.
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.
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
(R7T) from the o
u
tdoor
u
nit PC
b
o
a
rd.
(
3
.5k
ƙ
~
3
60k
ƙ
)
Содержание FTKS50BVMB
Страница 1: ...SiEN18 622 E Series Service Manual Applied Models zSuper Multi Plus Cooling Only Heat Pump ...
Страница 30: ...SiEN18 622 Specifications 17 Part 2 Specifications 1 Specifications 18 1 1 Cooling Only 18 1 2 Heat Pump 34 ...
Страница 105: ...Refrigerant Flow for Each Operation Mode SiEN18 622 92 Refrigerant Circuit ...
Страница 157: ...Indoor Unit SkyAir Models SiEN18 622 144 Function ...
Страница 204: ...Instruction SiEN18 622 192 System Configuration FTK X S 50 60 71 F Indoor Unit 1 2 4 3 10 11 9 7 8 15 12 13 14 16 6 5 ...
Страница 312: ...SiEN18 622 Ceiling Mounted Cassette Type System Configuration 300 ...
Страница 424: ...Method of Replacing The Inverter s Power Transistors Modules SiEN18 622 412 Troubleshooting ...
Страница 446: ...Wiring Diagrams SiEN18 622 434 Appendix ...
Страница 452: ...SiEN18 622 vi Index ...