What do the codes and symbols mean on the front of the NCB300?
October 26th 2023
![NCB300 display icons](https://navien.co.uk/wp-content/uploads/2023/10/MicrosoftTeams-image-8.png)
![NCB300 display key](https://navien.co.uk/wp-content/uploads/2023/10/NCB300-Icons-Table-scaled.jpg)
![NCB300 Buttons diagram](https://navien.co.uk/wp-content/uploads/2023/10/NCB300-Buttons-Diagram.jpg)
![NCB300 buttons diagram](https://navien.co.uk/wp-content/uploads/2023/10/NCB300-Buttons-Table-scaled.jpg)
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