Error code: 407 Graphite Furnace

Hello!!   I am trying to anlize using graphite furnace technique and the analysis does not star because ERROR 407. The description indicates tube replacement or increase the atomization tmeperature to resolve. I tried the first and the problem keept and the second is not an option because I cant modify the temperature program from my method. Does any have this problem? Does anybody how to resolve or which is the origin? Thanks from Chile!