Daikin RZP100DVAL [154/255] Malfunction of suction air temperature sensor system

Daikin FHYCP50DVE [154/255] Malfunction of suction air temperature sensor system
SiE25-110 Troubleshooting by Remote Controller Display / LED Display
Troubleshooting 145
6.11 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 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
Disconnect the sunction air
temperature sensor (R1T)
from X19A on the indoor unit
PC board and measure the
resistance.
Connect correctly.
Sunction 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. 12 for “Thermistor temperature/Resistance characteristics”.
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.

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