Discharge Gas Pressure Sensor Abnormality - Hitachi RCUE40AG1-400AG1 Service Manual

[] [] Discharge Gas Pressure Sensor Abnormality
!
Malfunction of pressure sensor
Is connector CN28Pd on the
printed circuit board for relay
(PCB ) correctly connected?
D
Is DC24V between
connector CN28Pd PIN1 and
PIN3 on the printed circuit
board for relay (PCB
Is less than DC 0.1V or
more than DC 4.9V between
connector CN28Pd PIN2 and
PIN3 on the printed circuit
board for relay (PCB
discharge gas pressure
sensor is connected?
Is discharge gas
pressure sensor
connecting pipe clogging?
Discharge gas Pressure
Sensor Abnormality
No
Yes
No
)?
D
Yes
No
) when
D
Yes
Yes
No
TROUBLESHOOTING
Connect correctly
Replace the
printed circuit board
for relay (PCB )
D
Replace the printed
circuit board for
relay (PCB )
D
Remove clogging
in the pipe.
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