Troubleshooting; Protective Device; When Connecting The Power - Hitachi NEXT Series Instruction Manual

4. TROUBLESHOOTING

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.

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.

■ When connecting the power

LCD Indication
Heading Trouble Description
Reversal phase connection
(Note 2)
POWER
Phase-lacking connection
Instantaneous power interruption Power interruption for 1 to 5 sec.
Brief instantaneous power
interruption
■ During Operation
LCD Indication
Heading Trouble Description
1st stage discharge air temperature
(HIGH DIS. TEMP. 1)
1st stage discharge air temperature
2nd stage discharge air
temperature
(HIGH DIS. TEMP. 2)
Interstage pressure
[Fixed speed type]
Interstage pressure
2nd stage suction air temperature
(2ND SUCT. TEMP)
Oil temperature
SHUTDOWN
(OIL HIGH TEMP)
Oil pressure
[Fixed speed type]
Oil pressure
(OIL-LOW PRESS)
Answer error of 52
Overloading(main motor)
[Fixed speed type]
Overloading (main motor)
Overloading (auxiliary motor) Detected during operation
Answer error of 52
Answer error of 42
[Fixed speed type]
FAILURE
Inverter tripping or main
motor overloading with
automatic retrials.
INV STOP
36
CAUTION
Failure
What and How to Detect Detector Shutdown
Light
CPU
Detected for 3
(Note 1)
SHUTDOWN
seconds after
Blinks
connecting the power
CPU
(Note 1)
CPU
-
Power interruption for
CPU
1 sec or less.
Failure
What and How to Detect
Light
About 437 [419]℉
SHUTDOWN
225 [215]℃ or higher
The discharge temperature at 1st
stage rises above the below settings.
100 psi model
SHUTDOWN
about 446°F
0.69 MPa model
[about 419°F]
about 230℃
125 psi model
[about 215℃]
0.86 MPa model
● For working pressure of
100psi 0.69 MPa : About 446[428]℉
SHUTDOWN
230 [220]℃ or higher
● For working pressure of
125psi 0.86 MPa : About 500[482]℉
260 [250]℃ or higher
SHUTDOWN
39psi 0.27MPa or higher
SHUTDOWN
44psi 0.30MPa or higher
163 [158]℉ SHUTDOWN
73 [70]℃ or higher
163 [158]°F SHUTDOWN
73 [70]℃ or higher
SHUTDOWN
12 psi 0.08 MPa or lower
● For fi xed Speed type:
12 psi 0.08 MPa or lower
SHUTDOWN
● 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)
239℉ 115℃ or higher Blinks
(main motor bearing) in red
239℉ 115℃ or higher Blinks
(main motor bearing) in red
SHUTDOWN
Detected during operation
SHUTDOWN
Detected during SHUTDOWN
running.
Detected after shifting to △ SHUTDOWN
running.
SHUTDOWN
Failure signal from inverter
What Actions to Take
Reconnect the power cable tightly, check the
power supply and incoming power for loose
Yes connections and change the connection
location of 2 of the 3 phases, be sure to follow
all electrical safety procedures.
Reconnect the power cord tightly, check the
Yes
power supply, and take a corrective remedy.
Restart 3.4.5
Restart 3.4.5
※ The value in the [ ] is for water-cooled model
Detector Shutdown What Actions to Take
4.2
Thermistor Yes
Blinks
Thermistor Yes 4.2
Blinks
4.2
Thermistor Yes
Blinks
Pressure
Yes 4.2
Blinks sensor
Pressure
Yes 4.2
Blinks sensor
Thermistor Yes 4.2
Blinks
Thermistor Yes 4.2
Blinks
Pressure
Yes 4.2
Blinks sensor
Pressure
Yes 4.2
Blinks sensor
Thermo
Yes 4.2
stat
Thermo
Yes 4.2
stat
Thermal
Yes 4.2
Blinks relay
Thermal
Yes 4.2
Blinks relay
CPU Yes 4.2
Blinks
CPU Yes 4.2
Blinks
Failure
stop after
CPU 4.2
repetition
Blinks
of retrials.
How to History Error
Reset code code
01 E0.01
Press RESET
button.
4.2.
02 E0.02
03 E0.03
-
04 E0.04
How to History Error
Reset code code
Press RESET
55 E0.55
button.
Press RESET
55 E0.55
button.
Press RESET
56 E0.56
button.
Press RESET
52 E0.52
button.
Press RESET
52 E0.52
button.
Press RESET
5B E0.5B
button.
Press RESET
58 E0.58
button.
Press RESET
5C E0.5C
button.
Press RESET
5C E0.5C
button.
Press RESET
51 E0.51
button.
Press RESET
17 E0.17
button.
Press RESET
17 E0.17
button.
Press RESET
53 E0.53
button.
Press RESET
51 E0.51
button.
Press RESET
16 E0.16
button.
Press RESET
44 E0.44
button.