Shutdown/Alarm Indications; On The Instrument Panel - Hitachi HISCREW 2000 Series Instruction Manual

5. TROUBLESHOOTING [SHUTDOWN/ALARM Indications on the Instrument Panel]
5.3 SHUTDOWN/ALARM Indications on the Instrument Panel
When a problem occurs, the SHUTDOWN, ALARM or AUTO START light flashes and the digital monitor displays
a corresponding ALARM or SHUTDOWN (as 'A/S' below) code. If this is the case, refer to the following table to
identify the cause. If you cannot identify the cause, or for the problem with a mark in the table, contact a
Hitachi distributor.
A/S Light: Category of
Code Action Problem
E-17 SHUTDOWN: Overloading
On (flashing)
E-18 SHUTDOWN: High discharge
On (flashing) temperature 1 (*)
E-23 ALARM: High discharge
On (flashing) temperature 1 (*)
E-19 SHUTDOWN: Failed air dryer
On (flashing)
ALARM:
On (flashing)
E-01 SHUTDOWN: Reversal phase
On (flashing) connection
E-02 SHUTDOWN: Phase-lacking
On (flashing) connection
E-11 SHUTDOWN: High discharge
On (flashing) temperature 2 (*)
E-12 SHUTDOWN: Abnormally
On (flashing) high discharge
pressure
E-14 SHUTDOWN: Option
On (flashing)
E-16 SHUTDOWN: Answer error of
On (flashing) contactor 42
E-51 SHUTDOWN: Answer error of
On (flashing) contactor 52
A
Causes
Shutdown
Yes Failure of power Check the power supply for a voltage drop
supply and imbalance. Correct it if required.
High discharge Check and correct the capacity control settings and/
pressure or readjust the modulator valve, if the discharge pres-
sure is higher than the specification pressure.
High discharge Check the oil separator element. Replace
pressure it if it is clogged.
Failure of main motor Check the motor for insulation resistance
etc.
and/or cooling fan motor
Failure of air end Check the air end.
Yes High ambient Ventilate the room to reduce the ambient
temperature temperature to 40°C.
Low oil level Add oil. (Disconnect the power and make sure that the
discharge pressure gauge reads 0 MPa in advance.)
Dirty or clogged Clean the cooling fins. See page 51.
oil cooler
Dirty or clogged Replace the oil filter. See page 49.
oil filter
No Same as Same as the E-18 above
the E-18 above
Yes Tripping of an air See page 25.
dryer's protective
device during
No
operation
Yes Power connected Disconnect the power and change 2 of
in a reversal phase the 3 power cord wires.
Yes Power connected Check the power supply. Tightly reconnect
with a lack of the power cord wires.
phase
Yes Failure of oil Replace the oil separator element and the
separator oil.
element
Yes Failure of oil Check the oil separator element. Replace
separator
if required.
element
Failure of Disconnect the power and tightly reconnect
contactor 52 the 52 wires.
Yes
Yes Failure of Disconnect the power and check the 42.
contactor 42 Tightly reconnect the 42 wires. Replace the
(42 answer error) 42 if necessary.
Yes Failure of Disconnect the power and check the 52.
contactor 52 Tightly reconnect the 52 wires. Replace the
(52 answer error) 52 if necessary.
What Actions to Take Mark
What and How How to
to Detect Reset
Tripping of Press the reset
thermal button of the
overload relay thermal
overload relay.
Discharge Press the
temperature 1 RESET button.
over 110°C
Discharge Automatically
temperature 1 reset.
over 105°C
DIP switch SW1 Press the
No.2 set to OFF RESET button.
DIP switch SW1 Press the
No.2 set to ON RESET button.
Detected for 3 Disconnect and
seconds after reconnect the
connecting the power.
power
Detected for 3 Disconnect and
seconds after reconnect the
connecting the power.
power
Discharge
Press the
temperature 2 RESET button.
over 110°C
Detected during Press the
delta operation
RESET button.
Detected during Press the
delta operation RESET button.
Detected during Press the
star operation RESET button.
A/S
History
17
18
23
19
19
01
02
11
12
12
14
16
51
23