Low Voltage; Overvoltage; Overheated; System Error - Hürner HST 300 Smart Manuel Utilisateur

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the welding unit and the fitting (check push-on terminal
on fitting), or the heater coil is defective.

11.1.3 Low Voltage

The input voltage is below 175 volts. Adjust generator
output voltage.

11.1.4 Overvoltage

The input voltage is over 290 volts. Decrease generator
output voltage.

11.1.5 Overheated

The transformer temperature is too hot. Let the welding
unit cool down for about 1 hour.

11.1.6 System Error

CAUTION!
The welding unit has to be disconnected immediately from
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.

11.1.7 Temperature Error

The ambient temperature measured is outside the operat-
ing range of the welding unit, i.e., below – 20°C (– 4°F) or
over + 60°C (+ 140°F).

11.1.8 Temperatur Sensor Defective

The ambient temperature sensor on the welding cable is
damaged or defective.

11.1.9 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.

11.1.10 Unit to Service

The recommended next service date for the welding unit is
overdue. The service due message has to be acknowledged
by pressing the START/SET key. Send the welding unit to
the manufacturer or an approved service point for service
and check-up.

11.1.11 Input Error

A code that was entered is incorrect. At manual welding
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HÜRNER HST 300 Smart User's Manual Version July 2018
EN