
How a heater works on a Renault Grand Scenic 3
In the middle of winter, it's a definite asset on the road when you go to work. When it doesn't work we quickly miss it. So before understanding what the malfunction came from, we will have to know how it works on this Renault Grand Scenic 3, at least its principle. The heating uses the engine temperature to warm up the personalised tour, then very often from the cooling device. So this system has several functions. Also, the emission device, so that the hot air comes to us also has a duplication. It's the ventilateur which emits hot air when the automobile is running at low speed or at walking pace, then it is the speed of the vehicle which will send the hot air when you are moving faster. Well designed, right?
Recurring heating problems on a Renault Grand Scenic 3
Broken thermostat
The concept is affordable, when the thermostat that adjusts the temperature does not really measure the temperature of the water circuit, the entire latter is affected. Even if the thermostat of this Renault Grand Scenic 3 no longer works correctly, the heating will work normally. Because the natural temperature of the engine will increase over time, so will the cooling system the same whether it is regulated or not. Our only concern is that you will hardly be able to regulate the temperature.
Air flaps blocked on the Renault Grand Scenic 3
It is a dysfunction that happens quite frequently. These shutters, which allow you to direct the air or adjust the intensity, sometimes get blocked over time. To remedy this it is simple, remove the cover and look inside how it was done. Activate the mechanisms to see where it is blocking. Put a little WD 40 to lubricate and voila.
Faulty fan on the Renault Grand Scenic 3
As you might expect, the fan is useful only at low revs or at a standstill. If your heating system no longer generates heat at low speed but you still hear a sound, your fan is probably running out. In principle, with a higher speed, the heating of this Renault Grand Scenic 3 should work. If the fan really does not work, it will have to be changed.
Blocked hoses
The signs are pretty obvious. If your heater works but does not generate hot air or very little, the malfunction is certainly due to the hoses. These become clogged over time and no longer leave the possibility for hot water to reach the heating of this Renault Grand Scenic 3. In this specific case, wash the hoses or install new ones. .
Air pocket in the circuit of the Renault Grand Scenic 3
The syndrome is identical to that of the hoses. If ever small pockets of air have entered the circuit, hot water also has difficulty accessing the heating radiator of the Renault Grand Scenic 3. In this specific case, it is necessary to bleed the circuit. water.
Conclusion
You now understand where this dysfunction will arise. However it may be that the problem comes from another place, such as the air duct of this cluttered Renault Grand Scenic 3, or a broken valve, however it is still rather rare. Leave us a comment if this tutorial was useful to you. Good walk !