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Hey chaps. Good to see the debate. I have a question. You mention that there were two types of gas valve fitted to the 837e. One; the later is the SIG. I understand you to say that this is the one without the rectifier in the cable. Because that is the one which had gone faulty and...

Firstly a big thank you to all the help from the site. Here is my overview; for Joe Public. So not you crazy heating engineers out there, but in case a civilian had the problem I had. 1. I had an INTERMITTENT F28 fault on my boiler. Over time it suddenly became permanent, showing the red...

Hey thanks for the expert advice. In fact what happened was this. The only Heating Engineers I could find, worked this way. 60 per hour. You pay them to turn up. Then you pay them 60 per hour, to diagnose. And on top of that was parts. In fact I only found all this out because they bought parts...

My Vaillant Turbomax 837e is 10 years old. Suddenly, I start getting F28 (ignition / no gas problems) fault code. It is an intermittent fault. But now is tuning the boiler off for most of the day. I have had 2 boiler engineers look at it; who have in turn talked to Vaillant Tech support. All of...