Remote Sensor Abnormality - Daikin SkyAir RZR-TA Series Service Manual

Troubleshooting by Error Codes

4.25 Remote Sensor Abnormality

C9
Error Code
Applicable
FTQ-TA
Models
Method of Error The error is detected by remote sensor temperature.
Detection
Error Decision When the remote sensor becomes disconnected or shorted while the unit is running.
Conditions
Supposed  Defective indoor unit thermistor (R1T) for room temperature
Causes  Defective indoor unit PCB
Troubleshooting
Note(s)
1. Connector and indoor unit PCB
Reference
CHECK 11 Refer to page 270.
214
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 the
indoor unit PCB
( 1).
YES
Resistance
is normal when
measured after
disconnecting the sensor
from the indoor unit
PCB.
CHECK 11
YES
Model Connector for remote sensor
FTQ-TA
NO Field setting
10(20)-2 is set to 03.
YES
NO
NO
X4A
NO
Set to 03.
Replace the indoor unit PCB.
Connect the sensor and turn ON
again.
Replace the sensor (R1T).
Replace the indoor unit PCB.
PCB
A1P
Part 6 Service Diagnosis
SiUS281811E