Remote Sensor Abnormality - Daikin VRV IV-S RXTQ-TAVJU Series Service Manual

SiUS331604E

4.15 Remote Sensor Abnormality

C9
Error Code
Applicable
FXTQ
Models
Method of Error
The error is detected out by temperature detected by remote sensor.
Detection
Error Decision When the remote sensor becomes disconnected or shorted while the unit is running.
Conditions
Supposed
Causes
Troubleshooting
Service Diagnosis
Defective indoor unit thermistor (R1T) for air inlet
Defective indoor unit PCB
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
Is the
optional remote
sensor is installed?
YES
Connector is
connected to X16A of
the indoor unit
PCB.
YES
Resistance
is normal when
measured after
disconnecting the sensor
from the indoor unit
PCB.
CHECK 11
YES
Refer to page 231.
CHECK 11
Field
NO
setting 10(20)-2 is set at
C3.
YES
NO
NO
Troubleshooting by Error Code
NO
Set at 03.
Replace the indoor unit PCB.
Connect the sensor and turn ON
again.
Replace the sensor (R1T).
Replace the indoor unit PCB.
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