Discharge Pressure Sensor Error - Fujitsu AOYG45LAT8 User Manual

Trouble shooting 27
OUTDOOR UNIT Error Method:

Discharge Pressure Sensor Error

Detective Actuators:
Discharge pressure sensor
Forecast of Cause :
1. Discharge pressure sensor connector disconnection, open
2. Discharge pressure sensor failure3. Main PCB failure
Check Point 1 : Check the discharge pressure sensor connection state
Connector connection state check
Cable open check
OK
Check Point 2 : Check the discharge pressure sensor
Sensor characteristics check
* For the characteristics of the discharge pressure sensor,
refer to the "Service Parts Information 6".
OK
Check Point 3 : Check voltage of Main PCB (DC5.0V)
Main PCB (CN91:1-4) voltage value = 5V
Remove the thermistor from Main PCB, check the voltage.
Discharge pressure sensor (CN91:1-4)
If the voltage does not appear, replace Main PCB
the check operation again.
Indicate or Display:
Outdoor Unit : E. 86. 1
Indoor Unit
Error Code
Detective details:
When any of the following conditions is satisfied, a discharge 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
or more
2. 30 seconds or more have elapsed since the outdoor unit power was turned
on and pressure sensor detected value
PS
1 2 3 4
1 2 3 4
CN91
: Operation LED 8 times Flash, Timer LED 6 Times Flash,
Economy LED Continuous Flash.
: 86
DC
, and execute
02-43
0.3V continued for 30 seconds
5.0V was detected.