My R1 just arrived!

Hi everyone here on Roast World. I just got my R1 and I got a lot to learn about using this roaster. I read the owner manual but I find a problem when I am in roast mode. When I am roasting, only ROR is showing on the Drum Temp of the control panel. The B button should toggle the ROR to Drum Temp but it has no response no matter how many times I press it. Is it something wrong with the button?

With the new IBTS there is no more drum temperature, this is replaced by the IBTS and toggling the B button has no effect. So when in roasting mode the IBTS is measuring the beans, and in all other modes it will measure the drum (assuming the drum is empty)

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