So excited with this purchase-beautiful oven, fit right in the space of our 25 year old G.E. oven.  Right from the first use of the lower oven, it has not worked properly.  As it heats up an error message appears in reference to the cooling fan and instructs us to call a technician.  Has not been resolved yet. Hopefully it will be repaired and we can get 25 years out of this oven also. Will write more when issue resolved.