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Why does the fan not turn off??
It is not common but you may find that one day you go to your vehicle and find the heating fan on and it does not turn off..
Don't be alarmed, It's easier to fix than you can imagine.. The first thing is to know where the sensor is., here I show you. Click on the image to see it better.
The control unit detects that the heating is hot and tries to cool it, and it may be because 2 reasons, dirt/false contact on the sensor. Or failure in the control unit. The first thing is to remove and clean the sensor..
How to disassemble temperature sensor
If you look at the photos above, you have an iron tab, you just have to press it and take the iron rod out of the hole, The metal clip will be lifted and the sensor will come out easily.
How to fix the failure of the temperature sensor of the Chinese stationary heating
As I mentioned, the repair is very simple., have 2 options, or clean the sensor, or replace it you can find it here, Careful, because in the link you have several versions, to, eberspacher and china, the china is the 2 cables with connector 3 pines.
The other option, as I mentioned, was to clean it., In the image I show you where the problem usually is..
Right at that point, false contact usually occurs due to humidity/corrosion., with pressurized air or with a splash of contact cleaner or wd-40 in it 99% of the cases it will solve it.
Some sellers already mount a sensor with a plastic sleeve on the terminals to solve the problem., but not all.
In this one that I show you, it already has double plastic protection, a finite one, and then a thicker one although it cannot be fully appreciated, the thin protection that goes up to the sensor head, with him it would be strange if that error happened to you.
If you have the good sensor The problem will probably be in the control unit that you can buy here. But before doing it, Check it because it could have a little sulfation due to humidity., what could cause that bad reading, and with a simple cleaning with alcohol eliminating the sulfation it is possible to solve it., You can identify it by looking at the problem in this photo.
Consequences
You will have a problem if it happens to you and you don't have a solar panel., because it will drain your battery, If it is in a home with a transformer or you have a solar panel, no problem.
To avoid this you can install a switch How is the heating supply?, and you simply turn it off when you are not going to use it.
