Suction Pressure Sensor Error - Fujitsu Airstage V-II Service Manual

Trouble shooting 40
OUTDOOR UNIT Error Method:

Suction Pressure Sensor Error

Detective Actuators:
Suction pressure sensor
Forecast of Cause :
1. Suction pressure sensor connector disconnection, open
2. Suction pressure sensor defective
3. Main PCB defective
Check Point 1 : Check the suction pressure sensor connection state
Connector connection state check
Cable open check
OK
Check Point 2 : Check the suction pressure sensor
Sensor characteristics check
* For the characteristics of the suction pressure
refer to the "Service Parts Information 20".
OK
Check Point 3 : Check voltage of Main PCB (DC5.0V)
Main PCB (CN119:1-3) voltage value = 5V
Remove the thermistor from Main PCB, check the voltage.
Suction pressure sensor (CN119:1-3)
If the voltage does not appear, replace Main PCB and set up orignal address. If the voltage does not appear, replace Main PCB and set up orignal address.
(Refer to 06-03 page Main PCB removal.)
Indicate or Display:
Outdoor Unit : E. 86. 3
Indoor Unit
Error Code
Detective details:
When any of the following conditions is satisfied, a suction pressure
sensor error is generated.
1. 30 seconds or more have elapsed since the outdoor unit power was turned
on and pressure sensor detected value
seconds or more.
2. 30 seconds or more have elapsed since the outdoor unit power was turned
on and pressure sensor detected value
sensor
,
PS
1 2 3
1 2 3
CN119
: Operation LED 9 times Flash, Timer LED 15 Times Flash,
Filter LED Continuous Flash.
: 86
DC
04-48
0.06V continued for 30
5.0V was detected.