Sub-Cool Heat Ex. Gas Outlet Temp Sensor Error - Fujitsu Airstage VR-II Series Service Manual

Trouble shooting 44
OUTDOOR UNIT Error Method:
Sub-cool Heat EX. Gas outlet
Temp Sensor Error
Detective Actuators:
Sub-cooling heat ex. gas outlet
temp. sensor
Forecast of Cause :
1. Connector connection defective, open
2. Sensor defective
3. Main PCB defective
Check Point 1 : Check the connector connection and cable open
Connector connection state check
Cable open check
OK
Check Point 2 : Check the sensor
Sensor characteristics check (Disconnect the sensor from the PCB and check.)
* For the sensor characteristics, refer to the "Service Parts Information 25".
OK
Check Point 3 : Check voltage of Main PCB (DC5.0V)
Main PCB (CN142: 7-8) voltage value = 5V
Remove the sensor from Main PCB, check the voltage.
BLACK
1 1
BLACK
2 2
BLACK
3 3
BLACK
4 4
CN142
5 5
6 6
BLACK
7 7
BLACK
8 8
Sub-cooling heat ex. gas outlet temp. sensor (CN142: 7-8)
If the voltage does not appear, replace Main PCB and set up original address.
Indicate or Display:
E82. 2
Outdoor Unit : E. 8 2. 2
Indoor Unit
Error Code
Detective details:
Sub-cooling heat ex. gas outlet temp. sensor short or open detected.
THERMISTOR (SC. INT. LIQ)
THERMISTOR (SC. EXT. LIQ)
THERMISTOR (SC. EXT. GAS)
: Operation LED 9 times Flash, Timer LED 15 Times Flash,
Filter LED Continuous Flash.
: 9 U / 8 2
DC
04-53