The invention concerns a heat exchanger for industrial installations, in particular for power plants, with at least one distributor for a fluid medium and at least one heat exchanger element attached to the distributor. Service providers are also forced to conform to reputation requirements since they are published. The exhaust gas conduit is in fluid communication with, and is configured to receive an exhaust gas from the internal combustion engine. When the designated variable has been rewritten, the monitor circuit stores the updated data and transmits variable information stored in an internal register to a debugging tool in a predetermined transmission cycle.