Fujitsu AO*G09KXCA Series, Service Instruction

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Trouble shooting 20
OUTDOOR UNIT Error Method:
Detective Actuators: Detective details:
02-24
High Pressure Switch Error
Forecast of Cause :
Check Point 1 : Check the high pressure switch connection state
OK
Outdoor unit Main PCB
High Pressure Switch
1. High pressure switch connector disconnection, open
2. High pressure switch characteristics failure
3. Main PCB failure
When pressure switch open is detected in 10 seconds
after the power is turned on.
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.
OK
Check Point 3 : Replace Main PCB
Change Main PCB, and execute the check operation again.
Type of contact
Characteristics of pressure switch
C
H
Pressure
Pressure switch 1
4.2 0.1MPa
3.2 0.15MPa
Contact : Short Open
Contact : Open Short
(Connector: P20)
Indicate or Display:
Indoor Unit :
Operation indicator : 8 times Flash
Timer indicator : 6 times Flash
Error code: [ E : 86 ]
Economy indicator: Continuous Flash