The image formation apparatus has a plurality of cooling fans inside the main body of the apparatus and comprises an error detecting function of detecting occurrence of an error such as a sheet jam, and switches between operation and non-operation of the cooling fans or changes a rotation number thereof in operation according to a form of a detected error. Thus, it allows optimization of in-apparatus the temperature in the apparatus control on error occurrence and temperature control of each inside portion of the apparatus on sheet jam occurrence so as to solve various problems relating to in the apparatus temperature status on the error occurrence.