Fujitsu Airstage VR-II AOUA96TLBV - Indoor Unit Suction Air Temp. Thermistor Error

Sensor Characteristics (Rough value)
If Thermistor is either open or shorted, replace it and reset the power.
Trouble shooting 82
E 4A.1
INDOOR UNIT Error Method:
Indoor unit suction air temp.
thermistor error
Indicate or Display:
Outdoor Unit : E.5 U.1
Error Code : 4 A, 4 A. 1
Detective Actuators:
Indoor Unit Controller PCB Circuit
Suction air temp. thermistor
Detective details:
When Indoor unit suction air temp. thermistor open or shortage is detected
OK
Forecast of Cause :
1. Connector defective connection 2. Thermistor defective 3. Controller PCB defective
Check Point 1 : Check connection of Connector
Check if connector is loose or removed
Check erroneous connection
Check if thermistor cable is open
>>Reset Power when reinstalling due to removed connector or incorrect wiring.
OK
Check Point 2 : Remove connector and check sensor resistance value
Check Point 3 : Check voltage CN9 of Controller PCB (DC5.0V)
DC
If the voltage does not appear, replace Controller PCB and set up the original address.
04-88
+3
6.5
35
8.0
30
10.012.515.820.125.233.6
Resistance Value ( )
2520151050
Temperature (
9586776859504132
Temperature (
°C)
°F)
3.54.35.3
504540
122113104
Resistance Value ( )
Temperature (
Temperature (
°C)
°F)