If you have a BC300 + CommLink external shunt installed on your caravan battery, you can use the JControl to clear it if communication with it is ever lost.
To clear the BC300 external shunt:
- Enter Set-Up mode by holding the SETTINGS button down until Set-Up is seen in the AMPS and VOLTS display.
- Navigate to the ADVANC menu function.
- Navigate to the ESHUNT menu function.
- Follow the directions in the below image to clear the BC300: