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Emergency stop W30A

If you have already pressed the reset button on the side of the control panel and the alarm does not disappear, then the presence of this error may indicate that a component may be faulty, here are the steps to find out:

1.- Give to the emergency button a tap and see if the alarm disappears, if the alarm disappears this means that the button is no longer making good contact with the connector, so it will be necessary to replace the emergency button.

You can order it at the following link: Emergency button (control panel) – Giesen Coffee Roasters

2.- Check if there are any loose wires in the emergency stop connection, if there are any loose wires reconnect them. To access them, it is necessary to remove all the screws located around the aluminum plate where the emergency button is located.

3.- Check the voltage on the emergency button contacts marked with the code 300S1, this are situated beneath the aluminum plate where the emergency button is placed. We recommend referring to the wiring diagram specific to your machine model to identify the voltage associated with each code. For this you will need a voltage meter.

If the contacts are defective, they will need to be replaced.

You can order it at the following link: Contact element clamp Siemens – Giesen Coffee Roasters

4.- Locate the SIEMENS component inside the control panel marked with the code 300K1, then press the blue button on the top of the component for a few seconds and see if the alarm disappears. Also check the voltage of this component.

5.- Check if there are any loose wires on the conection of the reset button, if there are any loose wires reconnect them. Also make sure that the reset button connector is in good condition.

  • All of the above must be carefully checked in the machine control panel.

  • It is advisable that this check be conducted by a qualified electrician.

  • If you require wiring diagram for your machine, please reach out to us and provide a picture of the interior of the control panel along with the machine's serial number.