E: 86. High Pressure Switch Error (Outdoor Unit) - Fujitsu GENERAL ASHG18KMTE Service Manual

2-26. E: 86. High pressure switch error (Outdoor unit)

Indicator Indoor unit
Outdoor unit main PCB
Detective actuator
High pressure switch
Forecast of cause
Check point 1. Check the high pressure switch connection state
• Check connector and wiring connection state.
• Check if cable is open
-> Reset power when reinstalling due to removed connector or incorrect wiring.
Check point 2. Check the high pressure switch characteristics
• Check switch characteristics.
For the characteristics of the high pressure switch, refer to below.
Check point 3. Replace main PCB
Change main PCB and check operation again.
• Type of contact
• Characteristics of pressure switch
Contact: Short
Contact: Open
24 model: P20
2-26. E: 86. High pressure switch error (Outdoor unit)
Operation indicator
Timer indicator
Economy indicator
Error code
→hen pressure switch open is detected in 10 seconds
after the power is turned on.
High pressure switch connector disconnection or open
End
C
Pressure
Pressure switch 1
Open
Short
- (03-31) -
8 time flash
6 time flash
Continuous flash
E: 86
High pressure switch characteristics failure
Main PCB failure
H
4.2—4.05 MPa
3.2±0.15 MPa
2. Troubleshooting with error code