Air conditioning/heating. Temperature control on the passenger side defective?!

Hello, I have the following problem with my Countryman Works from 2020. No matter what temperature I set on the passenger side, only cold air comes out of the exhaust nozzles on the passenger side. The controller on the driver side reacts quite normally. If I set the temperature e.g. to 28 degrees, warm air comes out of the nozzles. Did someone already have the problem and/or can help me? Thanks and greeting jomax