  Ellerman bombs (EBs) are small brightening events in the solar lower
atmosphere. By original definition, the main EB's characteristic is the two
emission bumps in both wings of chromospheric lines, such as H$\alpha$ and Ca
II 8542 {\AA} lines. Up to now, most authors found that the temperature
increase of EBs around the temperature minimum region is in the range of
600K-3000K. However, with recent IRIS observations, some authors proposed that
the temperature increase of EBs could be more than 10000K. Using non-LTE
semi-empirical modeling, we investigate the line profiles, continuum emission
and the radiative losses for the EB models with different temperature
increases, and compare them with observations. Our result indicates that if the
EB maximum temperature attains more than 10000K around the temperature minimum
region, then the resulted H$\alpha$ and Ca II 8542 {\AA} line profiles and the
continuum emission would be much stronger than that of EB observations.
Moreover, due to the high radiative losses, the high temperature EB would have
a very short lifetime, which is not comparable with the observations. Thus, our
study does not support the proposal that the EB temperatures are higher than
10000K.
