OK, carry on telling me. I know how to post a photo. Taking one is a different matter. I have progressed now to knowing that what I am lighting is not the pilot light (at least on the wall heater). Anyway, I see that I am not getting anywhere here so I am "unwatching" this thread.
Thanks - I am following the procedure you describe, depending on what you mean by "several", and it sometimes works, e.g., for an engineer, and for me. I would prefer it to work every time.
1. Already mentioned.
2. It solves nothing.
3. Impractical. The heater is freshly-installed. If it is broken it must have been broken by the fitter or beforehand, which seems very unlikely. What people were doing on I don't know but the solution there no longer works for me anyway.
I am open to constructive advice - perhaps there is no point checking the gas pressure. I am assuming that the thermocouple on my heater has to be heated to a specific temperature for the gas to stay on when I release the control knob. As my problem is that the gas does not stay on (see above)...
I got that about blowing, yes. I guess it's apparent effect was coincidence. You are welcome to your view on these heaters. As for me, I am not continuing to throw good money after bad.
I was asking about one that does play up. The engineers that have attended have not been able to make it work for any length of time. And I have had a previous one replaced for the same reason. I am not sure what the purpose of your post is.
I didn't break anything. It may be that nothing can be done even taking the cover off. In that case the best advice to people must be not to buy this type of heater. And I have a gas fire in the fireplace whose pilot light sometimes refuses to stay lit. ISTM with modern gas heaters that we have...
It is a Valor Brazilia F5 wall heater with balanced flue. It was fitted by an engineer who has emigrated to New Zealand, and the business is closed AFAIK. Of course I do not know who makes what for whom so if you have info about Baxi heaters it might apply to my heater.
The heater worked OK for a time for me after I blew on the pilot light through a straw (see above). What could I be doing wrong? I suppose the heater is sensitive to a speck of dust and will have to be dismantled and cleaned weekly. I would rather do it myself than pay £149 every week.
Resuming - I blew at the pilot light through a straw and this cured the problem once, but not again. Probably I need to get the cover off the heater somehow in order to clean the pilot light, or anything else. There are cross-head screws holding it on but they face the wall with less than 1 cm...