Fujitsu ASG30LMTA Service Instruction page 62

Trouble shooting 26
OUTDOOR UNIT Error Method:
High Pressure Switch Error
Detective Actuators:
Outdoor unit Main PCB
High Pressure Switch
Forecast of Cause :
1. High pressure switch connector disconnection, open
2. High pressure switch characteristics failure
3. Main PCB failure
Check Point 1 : Check the high pressure switch connection state
Connector and wiring connection state check
Cable open check
OK
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
C
Pressure
Characteristics of pressure switch
Contact : Short
Contact : Open
AMP Air Conditioning
Indicate or Display:
Indoor Unit :
H
(30 : CN90)
(34 : CN101)
Pressure switch 1
4.2 0.1MPa
Open
Short
3.2 0.15MPa
Operation lamp: 8 times Flash,
Timer lamp : 6 times Flash
Detective details:
When pressure switch open is detected in 10 seconds
after the power is turned on.
02-29
Wired Remote Controller :
ERROR CODE : [E : 86]
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