heating-problem-Renault-Dezir

How does a heater work on a Renault Dezir

In the middle of winter it is our best ally on the way when we go to work. And when it doesn't spin we miss it quickly. In this situation before finding out what the problem is, you will need to know how it works on your Renault Dezir, at least its principle. The heating uses the heat from the engine to raise the temperature of the personalised tour, then very often from the cooling system. In this way this system has several functions. Similarly, the emission system, so that the heat reaches us also has a dual purpose. There is a ventilateur which emits heat as soon as the car drives slowly or not at all, then it is the speed of the car which will send the heat when you are driving at high speed. It's pretty clever isn't it?

Recurring heating problems on a Renault Dezir

Broken thermostat

The idea is elementary, assuming that the thermostat which regulates the heat does not properly capture the degree of heat of the water in the circuit, the whole of the latter is affected. Even if the thermostat of your Renault Dezir does not work properly, the heating will operate normally. Quite simply because the natural heat of the engine will increase over time, then the water circuit at the same time, whether the thermostat works or not. The only inconvenience is that you will not be able to really configure the heat emitted.

Air flaps blocked on the Renault Dezir

This is a problem that occurs fairly regularly. 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.

Defective fan on the Renault Dezir

As you can imagine, the fan only works at low speed or when stopped. If the heating system no longer generates heat at low speed but you can still hear its noise, it is good that the fan is most likely defective. As a general rule, thanks to the higher speed, the heating of your Renault Dezir will be able to function. If the fan does not work, it is better to change it.

Blocked hoses

The signs are rather obvious. If your heating works but does not create heat or very slightly, the problem is certainly the hoses. They get dirty as time goes by and no longer allow hot water to heat your Renault Dezir. So wash the hoses or replace them with new ones.

Air pocket in the Renault Dezir circuit

The symptom is found to be similar to that of the hoses. If small pockets of air are introduced into the heart of the circuit, water will also have problems reaching the radiator of the heating of this Renault Dezir. Then, all you have to do is purge the water circuit.

Conclusion

You now know what may be causing the problem. However it sometimes happens that the reason comes from the other hand, such as the air duct of your cluttered Renault Dezir, or a defective tap, however it is still less frequent. Do not hesitate to leave a comment in case this article helped you. Good walk !