Si18-201
Troubleshooting - SkyAir Indoor Unit
Service Diagnosis
259
2.6.7
Malfunction of Suction Air Temperature Sensor System
Remote
Controller
Display
C9
Applicable
Models
AII indoor unit models
Method of
Malfunction
Detection
Malfunction detection is carried out by temperature detected by suction air temperature sensor.
Malfunction
Decision
Conditions
When the suction air temperature sensor’s thermistor becomes disconnected or short-circuited
while the unit is running.
Supposed
Causes
"
Failure of the sensor itself
"
Broken or disconnected wire
"
Failure of indoor unit PC board
"
Failure of connector contact
Troubleshooting
Note:
Measure the resistance while referring to the thermistor temperature and resistance conversion table.
Thermistor temperature and resistance conversion table.
Disconnect the suction air
temperature sensor (R1T) from
X19A on the indoor unit PC
board and measure the
resistance.
Suction air temperature
sensor replacement
If contact is OK.
replace outdoor unit PC
board.
Is the thermistor
normal?
(See note)
(MF017)
NO
YES
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Temperature Suction, heat exchanger(indoor)
outdoor air, outdoor unit suction
pipe sensor (k
Ω
)
Temperature Suction, heat exchanger(indoor)
outdoor air, outdoor unit suction
pipe sensor (k
Ω
)
-6.0
90.8
28.0
17.6
-4.0
81.7
30.0
16.2
-2.0
73.5
32.0
14.8
0.0
66.3
34.0
13.6
2.0
59.8
36.0
12.5
4.0
54.1
38.0
11.5
6.0
48.9
40.0
10.6
8.0
44.3
42.0
9.8
10.0
40.2
44.0
9.1
12.0
36.5
46.0
8.4
14.0
33.2
48.0
7.8
16.0
30.2
50.0
7.2
18.0
27.5
52.0
6.9
20.0
25.1
54.0
6.2
22.0
23.0
56.0
5.7
24.0
21.0
58.0
5.3
26.0
19.2
Содержание BPMK928B42
Страница 9: ...Si18 201 viii Table of Contents ...
Страница 71: ...Specifications Si18 201 58 Specifications ...
Страница 206: ...Si18 201 Remote Controller Operations 193 1 1 2 FVX25 35KZ ...
Страница 207: ...Remote Controller Si18 201 194 Operations 1 1 3 FTXD25 35KZ ...
Страница 208: ...Si18 201 Remote Controller Operations 195 1 1 4 FTK FTX50 60H ...
Страница 209: ...Remote Controller Si18 201 196 Operations 1 1 5 FTKD FTXD50 60 71J ...
Страница 213: ...Remote Controller Si18 201 200 Operations 1 1 9 FHYC35 50 60 71K Optional Accessory BRC7C612WC ...
Страница 214: ...Si18 201 Remote Controller Operations 201 ...
Страница 216: ...Si18 201 Remote Controller Operations 203 ...
Страница 217: ...Remote Controller Si18 201 204 Operations ...
Страница 234: ...Si18 201 Method of Field Set Operating Test 221 2 3 Interface Adaptor for Room Airconditioner KRP928A1S ...
Страница 237: ...Method of Field Set Si18 201 224 Operating Test ...
Страница 262: ...Si18 201 Troubleshooting SkyAir Indoor Unit Service Diagnosis 249 ...
Страница 393: ...Wiring Diagrams Si18 201 380 Appendix FHYC35 50 60 71KVE9 3D005668C ...
Страница 394: ...Si18 201 Wiring Diagrams Appendix 381 FHYC35 50 60 71KV1C9 ...
Страница 395: ...Wiring Diagrams Si18 201 382 Appendix FDYM60 03FAV1 FDYM60 03FAVAL C 3D019816D OPTION ...
Страница 396: ...Si18 201 Wiring Diagrams Appendix 383 FDYM60 03FAV1C ...