Suction Air Thermistor Abnormality - Daikin SkyAir RZQ-P Series Service Manual

Troubleshooting by Indication on the Remote Controller

3.11 Suction Air Thermistor Abnormality

C9
Remote
Controller
Display
Applicable FCQ, FHQ, FAQ
Models
Method of Error
The error is detected by temperature detected by suction air temperature thermistor.
Detection
Error Decision
When the suction air temperature thermistor becomes disconnected or shorted while the unit is
Conditions running
 Defective indoor unit thermistor for suction air
Supposed
 Defective indoor unit PCB
Causes
Troubleshooting
 Connector and indoor unit PCB
Note:
 Refer to "Thermistor Resistance / Temperature Characteristics" table on P.161.
102
Be sure to turn off the power switch before connecting or disconnecting
Caution
the connector or parts may be damaged.
Connector is
connected to the
connector(*) of the indoor
unit PCB.
YES
Resistance
is normal when
measured after
disconnecting the thermistor
from the indoor unit
PCB (7.2 ~
112)
YES
Model Connector for the suction air thermistor
FCQ
FHQ
FAQ
NO
NO
X13A
X13A
X19A
SiUS28-902_B
Connect the thermistor and turn
ON again.
Replace the thermistor (*).
Replace the indoor unit PCB.
Symbol PCB
R1T A1P
R1T A1P
R1T A1P
Service Diagnosis