rui.alheiro
New member
Hi,
After a few years using my Airtronic D4 without any problem, it stopped working completely.
I did all possible tests (I don't have a Diagnosis unit, just a basic mini-controller) that are on the manual:
- Check the harness connections
- check voltage
- did a full maintenance of the chambers (everything is cleaned, new gastkets, new filters, new mesh) and the system looks as good as new
- forced heating function short-circuiting the controller
- forced ventilation-only function also short-circuiting the controller
- tested the fuel pump resistance
- I borrowed a 801 controller so I could read the fault codes, but I was getting no error at all, even whenI forced an erro, like unplugging the fuel pump, so I was told I needed to buy a new ECU.
I bought one and the problem persisted.
After reading again the manual I realized I hadn't tested the flame/overheating sensor. :-(
and indeed the overheating sensor was giving a open circuit (the flame sensor was ok).
I changed it I the system worked perfectly for 2 days. And then same problem again: open circuit overheating sensor.
So now I had a new sensor (that solved the problem for 2 days until it got damaged again) connected to a new ECU (with nothing in between to damage the sensor that I think of).
What could be the problem? Any ideas?
I could buy a other sensor, but chances are that it will have the same outcome...
I'm currently in New Zealand and I haven't found yet proper technical support for this equipments.
Thanks in advance for your help,
Rui
After a few years using my Airtronic D4 without any problem, it stopped working completely.
I did all possible tests (I don't have a Diagnosis unit, just a basic mini-controller) that are on the manual:
- Check the harness connections
- check voltage
- did a full maintenance of the chambers (everything is cleaned, new gastkets, new filters, new mesh) and the system looks as good as new
- forced heating function short-circuiting the controller
- forced ventilation-only function also short-circuiting the controller
- tested the fuel pump resistance
- I borrowed a 801 controller so I could read the fault codes, but I was getting no error at all, even whenI forced an erro, like unplugging the fuel pump, so I was told I needed to buy a new ECU.
I bought one and the problem persisted.
After reading again the manual I realized I hadn't tested the flame/overheating sensor. :-(
and indeed the overheating sensor was giving a open circuit (the flame sensor was ok).
I changed it I the system worked perfectly for 2 days. And then same problem again: open circuit overheating sensor.
So now I had a new sensor (that solved the problem for 2 days until it got damaged again) connected to a new ECU (with nothing in between to damage the sensor that I think of).
What could be the problem? Any ideas?
I could buy a other sensor, but chances are that it will have the same outcome...
I'm currently in New Zealand and I haven't found yet proper technical support for this equipments.
Thanks in advance for your help,
Rui
