Megane Scenic 1.9D fans problem

Hello everyone. I tell you the car is a Scenic 1.9 64 hp atmospheric diesel of 99. The car has a cylinder head problem since mixing oil in the refrigerant circuit but so far there were no temperature problems.
As heated, he observed that he lost antifreeze and replaced a very large sleeve that leads to the expansion boat to the radiator to the thermostat and a splicing that goes to the engine. When the car was heated to purge it, I realized that the fans did not jump so I bridged the radiator and worked so that I assumed that that was the problem and replaced it but the car still does not turn on the fans when it reaches the temperature and heats up. When lighting the air conditioning, it also does not turn on the fan. He has only ignited it and stopped the car a few minutes later lit one of the time, never torn off. Trasteting the pegs with the car in hot but stopped also turned on a couple of times. The breakdown sounds so as not to have to go checking cables and go to the bulge? Thank you