Buildcraft version: 7.99.7(last)
Forge version: 1.11.2
Additional information:

blast furnace does not work. I craft, set, connect Solid fuel heat generator, liquid generator -
0 reactions. The oven does not work, does not heat up.

Buildcraft does not have a blast furnace. Please check which mod your blast furnace is from and report to them.

ic2, sry.