ESH150
–3PE~400V
Service manual
18/56
Ref. NR-000144-ENG
In the event of a malfunction affecting the operation of the unit, it emits an audio signal and
shows an alarm code on the COUNTER/CONTADOR display. An alarm cannot be cleared until
the problem which caused it has been resolved. After clearing the alarm, press the MODE
button.
Procedures for determining the causes of alarms are given below:
1.
Operating voltage under 170V
•
Check the electrical power connection.
•
Check the transformer’s thermomagnetic protection.
2.
Operating voltage above 270V
•
Check the electrical power connection.
3.
Excess pressure ISO (solenoid valve and heating system cut-out)
•
Check product pressure.
•
Check LED no. 10 on the printed circuit board: it should be on.
•
Check the safety pressure switch.
4.
Excess pressure POL (solenoid valve and heating system cut-out)
•
Check product pressure.
•
Check LED no. 11 on the printed circuit board: it should be on.
•
Check the safety pressure switch.
5.
Excess temperature ISO (CONTROL/POWER cut-out)
•
Check the heater heating system.
•
Check the safety pressure switch connection and allow it to cool down so it can
automatically reset.
•
Check LED no. 12 on the printed circuit board: it should be on.
6.
Excess temperature POL (CONTROL/POWER cut-out)
•
Check the heater heating system.
•
Check the safety pressure switch connection and allow it to cool down so it can
automatically reset.
•
Check LED no. 13 on the printed circuit board: it should be on.
7.
Button malfunction (only active when machine is connected to the power supply)
•
Check the buttons.
8.
Motor malfunction (motor stoppage)
•
Check the consumption of the hydraulic motor.
•
Check the electrical connections of the hydraulic motor.
•
Check LED no. 15 on the printed circuit board: it should be off.
ALARMS
