visco clutch from the fan

hello, had described the problem here before. but it has gone down somehow. so on a ride last week with caravan the temperature suddenly went into the red area and stayed there. I stopped and looked. it were the already described fuses in front of the engine room through. I have to say, I had the air conditioning all the time. what it is about now, even if the fans of the air conditioning system have failed, he would not have been so hot after all can it be that with me the viscolfan is defective after all? he turns with if the engine is warm so around 90 degrees, but I can hold him with the hand. can it be that he got so hot because I always had the climate on and then suddenly all the fuses flew out or is it the viscolfan I ask because I want to stay in 2 weeks on vacation and then drive over 3t km with caravan. have no desire with defective motor anywhere to stay in the pamoas. hope a uf a few good tips. Greetings blues ( achim)