Fujitsu AUXG45KRLB - Page 71

OUTDOOR UNIT Error Method:
Detective Actuators:
Detective details:
Forecast of Cause :
OK
OK
Indicate or Display:
Pressure sensor error
1. High pressure switch connector disconnection, open
2. High pressure switch characteristics failure
3. Inverter PCB failure
02-29
Trouble shooting 28
Error code : 86
High pressure switch
When the power was turned on, "high pressure switch : open" was detected.
Check Point 1 : Check the high pressure switch connection state
Connector and wiring connection state check
Cable open check
Check Point 2 : Check the high pressure switch characteristics
Switch characteristics check
* For the characteristics of high pressure switch, refer to below.
Check Point 3 : Replace Inverter PCB
Change Inverter PCB, and execute the check operation again.
Type of contact
Characteristics of pressure switch (P770)
C
H
Pressure
Pressure switch
4.2 0.1MPa
3.2 0.15MPa
Contact : Short Open
Contact : Open Short
Outdoor unit :
n
: n times blinking
: Light ON: Light OFF
Mode Error L1 L2 L6L5L4L3
2 8
6