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Troubleshooting for Indoor Unit
Si21-205
154
Troubleshooting
5.10 Malfunction of Suction Air Thermistor
Remote
Controller
Display
C9
Applicable
Models
FFQ-B, FHQ-BU
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 PC board
Failure of connector contact
Troubleshooting
Check No.2
Refer to P.163
Disconnect the sunction air
temperature sensor (R1T)
from X19A on the indoor unit
PC board and measure the
resistance.
Connect correctly.
Suction air temperature
sensor replacement.
If contact is OK, replace
outdoor unit PC board.
Is the
thermistor normal?
(See note)
NO
YES
(S2012)
NO
YES
Check contact of connector
Is it normal?
See
Check No. 2
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 Sky Air B-Series R-410A
Страница 7: ...Si21 205 vi Table of Contents ...
Страница 15: ...Models Si21 205 4 Model Name and Power Supply ...
Страница 16: ...Si21 205 Functions 5 Part 2 Functions 1 List of Functions 6 ...
Страница 35: ...Wireless Remote Controller Si21 205 24 Remote Controller ...
Страница 77: ...Settings Concerning Maintenance Si21 205 66 Field Setting FHQ B Service monitor LED Capacity setting adaptor ...
Страница 79: ...Settings Concerning Maintenance Si21 205 68 Field Setting Detail of PCB 2 ...
Страница 83: ...Maintenance Mode Setting Si21 205 72 Field Setting ...
Страница 239: ...Troubleshooting for Outdoor Unit 50 60 class Si21 205 228 Troubleshooting ...
Страница 246: ...Si21 205 FFQ25 35 50 60BV1B Removal Procedure 235 4 Remove the horizontal vane Step Procedure Points S2646 ...
Страница 283: ...Outdoor Unit 25 35 class Si21 205 272 Removal Procedure 2 Slide the MID upward and release Step Procedure Points ...
Страница 285: ...Outdoor Unit 25 35 class Si21 205 274 Removal Procedure 4 Remove the fan motor Step Procedure Points ...
Страница 321: ...Outdoor Unit 50 60 class Si21 205 310 Removal Procedure ...