Problem with auxiliary heating

[Mecksopp]

Hi,
Something is wrong with my heater, Superb -2013.
3-4 years ago I changed the circulation pump, after that it has run without any problem until now.

 

First it went into block state.
The result of reading faultcodes (see picture, felkod.jpg).
I cleared all faultcodes and unblocked the heater.

Now when I run the heater it starts, it runs for 20min (as expected according to preset value).

But there is no heat in the car.

The fan inside the car is running.

NO fault codes are found now, everything seems ok.

 

I can read a lot of live data from the heater but difficult to say if some value are wrong (se example of position 13, livedata1_13.jpg and livedata2_13.jpg).
Can it be a problem with the glow plug?
Strange that there is no fault code now.

 

Anybody have any idea how to make the fault finding?
Any idea is welcome.
BR
 

[rbhelle]

Er ikke bare tempsensoren din som kortsluter og dermed ikke klarer lese av korrekt temp? Da vil den stoppe av sikkerhetsmessige grunner.

[Mecksopp]

Thanks for your input.
But shouldn't the faultcode 01411 come back in that case?
 

[rbhelle]

Well, when it comes to VW Skoda Audi dault codes I am not convinced...sometimes things just happen without a probable cause. But yeah, it should flag a code of some sort. Would be wise to just disconnect all temp sensor and measure them. Or maybe check for leaks og any pins broken etc. It is at least free of charge 😅

[rbhelle]

Your temp sensor reports short to ground, so check the wiring.

[Mecksopp]

Thanks, I will check the wirings.