User interface
The user interface is used as follows:
- As the power tool status indicator
- For switching the worklight on and off
- For preselecting/controlling the stroke rate
- For controlling ASC at stroke rate level 6 (GST 18V‑155 SC, with factory setting)
- For signalling warnings in the app (temperature dependent overload protection, impact shutdown)
Colour of the status indicator (5) | Meaning | Corrective measure |
|---|---|---|
– | Power tool switched off | – |
Green | Power tool switched on and ready to use | – |
Yellow | Critical temperature reached | Remove the saw blade and let the power tool run at the maximum stroke rate for around 3 minutes to cool down. |
Battery almost empty | Charge the battery. | |
Red | Power tool has overheated. | Leave the power tool to cool down. |
Battery empty | Charge the battery. | |
Flashing red | Impact shutdown triggered | Read the message on the mobile device. |
Blue | Power tool connected to a mobile device via Bluetooth® | – |
Flashing blue | Data transfer | – |
You can preselect the stroke rate and change it during operation using the stroke rate preselection button (9). Press the button for changing the stroke rate preselection as many times as needed for the required stroke rate level to be displayed in the indicator (8). The last set stroke rate level is saved when switching off the power tool.
Available stroke rate levels:
- GST 18V‑155 SC: Stroke rate level 1–6 and additionally stroke rate level 6 with ASC (ASC indicator (4) will light up)
- GST 18V‑155 BC: Stroke rate level 1–6; the stroke rate can also be controlled via the on/off switch (21) up to the maximum stroke rate for the set stroke rate level
You can change both the values for the preset stroke rate levels and the number of levels in the Bosch Toolbox app.
The required stroke rate depends on the material and the working conditions and can be ascertained through practical tests.
A reduction in the stroke rate is recommended when sawing plastic and metal.
To start cutting as precisely as possible, ASC can be used to automatically reduce the stroke rate before positioning the saw blade on the workpiece. Once the saw blade touches the workpiece, the stroke rate is automatically increased to the set stroke rate level.
In the factory setting, stroke rate level 6 is available with or without ASC. For operation with ASC, press the button for stroke rate preselection (9) as many times as needed for the ASC indicator (4) to light up and A to appear in the stroke rate level indicator (8).
You can also switch ASC on and off for other stroke rate levels via the Bosch Toolbox app. If you change the settings, only the ASC indicator (4) will light up when ASC is switched on. The letter A will no longer appear in the stroke rate level indicator (8).