Bluetooth Operation

Bluetooth Operation | RAPT Gen 4 BrewZilla

To really leverage the power and control

Once the device is Bonded, it can be selected in the Settings menu option as one of the available Temperature Sensors. Once selected in this menu, temperature control will be ceded to the selected Bluetooth enabled RAPT device, rather than the internal temperature probe. In addition, on the TFT display the current (most recent) Gravity and Temperature reading will be displayed. The internal (built in probe) temperature is also displayed.

NOTE: this is not displayed in Graph Enabled Mode.

NOTE: It is completely normal for there to be a temperature variance between the built in probe and the Bluetooth enabled RAPT device. This is because the Bluetooth device is measuring the temperature of the mash (typically), and the built in probe is measuring the temperature at the base of the boiler. This difference will be greater when the RAPT Gen 4 BrewZilla is actively heating.

The Allowed Sensor Diff. Iin the Settings menu) sets the allowed temperature differential between the desired setpoint and the current temperature of the RAPT Gen 4 BrewZilla's built in probe. Heating is disabled temporarily if this differential is exceeded. The default differential setting is 2°C. This value is suitable for mashing. For step mashing or mash out (for example) you may wish to increase this differential as this allows the temperature of the mash to be incresed at a faster rate.

This differential can be altered in the Settings menu. If the temperature differential is exceeded, the RAPT Gen 4 BrewZillawill suspend heating until the differential is reduced. The legend DIFF OVERRIDE will also be displayed when the display is in Graph Disabled Mode.

The RAPT Gen 4 BrewZilla will suspend active heating and resume as needed – no intervention is required. Once the differential is reduced then heating will continue as normal.