  Validation of building energy simulation programs is of major interest to
both users and modellers. To achieve such a task, it is essential to apply a
methodology based on a priori test and empirical validation. A priori test
consists in verifying that models embedded in a program and their
implementation are correct. this should be achieved before carrying out
experiments. The aim of this report is to present results from the application
of the BESTEST procedure to our code. We will emphasise the way it allows to
find bugs in our program and also how it permits to qualify models of heat
transfer by conduction
