This example extends from Buildings.Fluid.HeatPumps.Examples.Carnot_TCon but decreases the set point for the leaving condenser temperature to be below its inlet temperature, in which case the model provides no heating. Towards the end of the simulation, the inlet temperature of the condenser is decreased to be below the evaporator temperature. In this domain, the model requires cooling again. While this is not a meaningful operating point for the model, the example verifies that it robustly simulates this regime.