Troubleshooting for SkyAir Indoor Unit
Si18-525B
352
Troubleshooting
5.10
Malfunction of Suction Air Thermistor
Remote
Controller
Display
C9
Applicable
Models
FFQ, FCQ, FBQ, FHQ
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 shorted while
the unit is running.
Supposed
Causes
Failure of the sensor itself
Broken or disconnected wire
Failure of indoor unit PCB
Failure of connector contact
Troubleshooting
Check No.02
Refer to P.358
Disconnect the sunction air
temperature sensor (R1T)
from X19A on the indoor unit
PCB and measure the
resistance.
Connect correctly.
Suction air temperature
sensor replacement.
If contact is OK, replace
outdoor unit PCB.
Is the
thermistor normal?
(See note)
NO
YES
(Q0418)
NO
YES
Check contact of connector
Is it normal?
+
See
Check No. 02
for “Thermistor temperature and resistance characteristics”.
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Содержание D-Series
Страница 1: ...Si18 525B Applied Models Super Multi Plus Cooling only Super Multi Plus Heat Pump D Series ...
Страница 33: ...List of Functions Si18 525B 20 List of Functions ...
Страница 34: ...Si18 525B Specifications 21 Part 2 Specifications 1 Specifications 22 1 1 Cooling Only 22 1 2 Heat Pump 42 ...
Страница 71: ...Specifications Si18 525B 58 Specifications ...
Страница 107: ...Printed Circuit Board Connector Wiring Diagram Si18 525B 94 Printed Circuit Board Connector Wiring Diagram ...
Страница 117: ...Refrigerant Flow for Each Operation Mode Si18 525B 104 Refrigerant Circuit ...
Страница 171: ...Indoor Unit SkyAir Models Si18 525B 158 Function ...
Страница 207: ...Test Operation and Field Setting for RA Indoor Unit Si18 525B 194 Test Operation ...
Страница 336: ...Si18 525B Service Check Function Troubleshooting 323 ...
Страница 443: ...BP Unit Si18 525B 430 Removal Procedure The clamps are to be kept in stock Step Procedure Points Clamps Q0529 ...
Страница 469: ...Wiring Diagrams Si18 525B 456 Appendix ...
Страница 475: ...Si18 525B vi Index ...