Question about ECO2N V2.1 temperature limitation

I am currently running simulations using TOUGHREACT V4.13omp with the ECO2N V2.1 equation of state. During the initialization, the code outputs the following message:

“Running ECO2N V2.1, maximum T(°C) allowed = 105”

However, according to the version description and related documentation of ECO2N, this module should be applicable to high-temperature conditions, which seems inconsistent with the temperature limitation reported by the code.

In addition, I set the simulation temperature to 250 °C in the flow.inp file. The simulation can run without crashing, but the output temperature is only about 105 °C, rather than the prescribed 250 °C. This makes me suspect that there may be an internal temperature cap or thermodynamic constraint in the current configuration.