36
4. TROUBLESHOOTING
4.1 Protective Device
The air compressor is provided with the protective devices listed below. If shutdowns are detected by these protective
devices, remove the cause with referring to the LCD monitor indication and this manual, and then press the
RESET
button to clear the shutdown indication. Depending on the type of shutdown, contact the local HITACHI distributor/
master dealer or representative office.
If a shutdown, alarm, problem or failure occurs, investigate the cause and take proper corrective action
before restarting. If there is any questions or comments, contact the local HITACHI distributor/master
dealer or representative office.
■
During Operation
※
The value in the [ ] is for water-cooled model
LCD Indication
What and How to Detect
Failure
Light
Detector Shutdown
What Actions to Take
How to
Reset
History
code
Error
code
Heading
Trouble Description
SHUTDOWN
1st stage discharge air temperature
(HIGH DIS. TEMP. 1)
About 437 [419]
℉
225 [215]
℃
or higher
SHUTDOWN
Blinks
Thermistor
Yes
4.2
Press
RESET
button.
55
E0.55
1st stage discharge air temperature
The discharge temperature at 1st
stage rises above the below settings.
SHUTDOWN
Blinks
Thermistor
Yes
4.2
Press
RESET
button.
55
E0.55
100 psi model
0.69 MPa model
about 446°F
[
about 419°F
]
about 230
℃
[about 215
℃
]
125 psi model
0.86 MPa model
2nd stage discharge air
temperature
(HIGH DIS. TEMP. 2)
●
For working pressure of
100psi 0.69 MPa : About 446[428]
℉
230 [220]
℃
or higher
●
For working pressure of
125psi 0.86 MPa : About 500[482]
℉
260 [250]
℃
or higher
SHUTDOWN
Blinks
Thermistor
Yes
4.2
Press
RESET
button.
56
E0.56
Interstage pressure
[Fixed speed type]
39psi 0.27MPa or higher
SHUTDOWN
Blinks
Pressure
sensor
Yes
4.2
Press
RESET
button.
52
E0.52
Interstage pressure
44psi 0.30MPa or higher
SHUTDOWN
Blinks
Pressure
sensor
Yes
4.2
Press
RESET
button.
52
E0.52
2nd stage suction air temperature
(2ND SUCT. TEMP)
163 [158]
℉
73 [70]
℃
or higher
SHUTDOWN
Blinks
Thermistor
Yes
4.2
Press
RESET
button.
5B
E0.5B
Oil temperature
(OIL HIGH TEMP)
163 [158]°F
73 [70]
℃
or higher
SHUTDOWN
Blinks
Thermistor
Yes
4.2
Press
RESET
button.
58
E0.58
Oil pressure
[Fixed speed type]
12 psi 0.08 MPa or lower
SHUTDOWN
Blinks
Pressure
sensor
Yes
4.2
Press
RESET
button.
5C
E0.5C
Oil pressure
(OIL-LOW PRESS)
●
For fi xed Speed type:
12 psi 0.08 MPa
or lower
●
For Vtype:12psi 0.08 MPa
or
lower (operating Freq. 45 Hz or
higher) 6psi 0.04MPa
or lower
(operating Freq. Less than 45 Hz)
SHUTDOWN
Blinks
Pressure
sensor
Yes
4.2
Press
RESET
button.
5C
E0.5C
Answer error of
52
239
℉
115
℃
or higher
(main motor bearing)
Blinks
in red
Thermo
stat
Yes
4.2
Press
RESET
button.
51
E0.51
Overloading(main motor)
[Fixed speed type]
239
℉
115
℃
or higher
(main motor bearing)
Blinks
in red
Thermo
stat
Yes
4.2
Press
RESET
button.
17
E0.17
Overloading (main motor)
Detected during operation
SHUTDOWN
Blinks
Thermal
relay
Yes
4.2
Press
RESET
button.
17
E0.17
Overloading (auxiliary motor)
Detected during operation
SHUTDOWN
Blinks
Thermal
relay
Yes
4.2
Press
RESET
button.
53
E0.53
Answer error of
52
Detected during
running.
SHUTDOWN
Blinks
CPU
Yes
4.2
Press
RESET
button.
51
E0.51
Answer error of
42
[Fixed speed type]
Detected after shifting to
△
running.
SHUTDOWN
Blinks
CPU
Yes
4.2
Press
RESET
button.
16
E0.16
FAILURE
INV STOP
Inverter tripping or main
motor overloading with
automatic retrials.
Failure signal from inverter
SHUTDOWN
Blinks
CPU
Failure
stop after
repetition
of retrials.
4.2
Press
RESET
button.
44
E0.44
CAUTION
■
When connecting the power
LCD Indication
What and How to Detect
Failure
Light
Detector Shutdown
What Actions to Take
How to
Reset
History
code
Error
code
Heading
Trouble Description
POWER
Reversal phase connection
(Note 2)
Detected for 3
seconds after
connecting the power
SHUTDOWN
Blinks
CPU
(Note 1)
Yes
Reconnect the power cable tightly, check the
power supply and incoming power for loose
connections and change the connection
location of 2 of the 3 phases, be sure to follow
all electrical safety procedures.
4.2
.
Press
RESET
button.
01
E0.01
Phase-lacking connection
CPU
(Note 1)
Yes
Reconnect the power cord tightly, check the
power supply, and take a corrective remedy.
02
E0.02
Instantaneous power interruption Power interruption for 1 to 5 sec.
-
CPU
Restart
3.4.5
-
03
E0.03
Brief instantaneous power
interruption
Power interruption for
1 sec or less.
CPU
Restart
3.4.5
04
E0.04