Version September 2022
16
EN
HÜRNER HST 300 Manual USB 2.0 User’s Manual
H Ü R N E R S c h w e i s s t e c h n i k G m b H
Nieder-Ohmener Str. 26
35325 Mücke, Germany
both the power supply and the fitting. The auto-test has
detected an error in the system. The unit must no longer
be operated and has to be sent to an approved shop for
check and repair.
9.1.6 Clock Error
The internal system clock works improperly or is defective.
Reset it, or send the welding unit to the manufacturer for
check and service.
9.1.7 Input Error
At manual welding parameter input, no welding time was
entered. An incorrect value was selected in the date set-
ting.
9.2 Errors During Welding
All errors that occur while welding is in progress are also
indicated by an audible alarm.
9.2.1 Low Voltage
The input voltage is below 175 volts. If the error condition
persists for longer than 15 seconds, the welding process
will be aborted. If the voltage goes down below 170 volts,
the welding process will abort immediately.
9.2.2 Overvoltage
The input voltage is over 290 volts. If the error condition
persists for longer than 15 seconds, the welding process
will be aborted.
9.2.3 Frequency Error
The frequency of the input voltage is out of tolerance
(42 Hz - 69 Hz).
9.2.4 Voltage Error
Check generator voltage and current. The output voltage
does not correspond to the value previously read; the weld-
ing unit has to be sent to the manufacturer for check-up.
9.2.5 Low Current
The message is displayed if the there is a momentary cur-
rent failure or if the current decreases by more than 15%
per second for 3 seconds.
9.2.6 High Current
The output current value is in excess; possible causes: short-
