I am sure it may seem that I want to DIY this but I have no desire to do anything that could be considered dangerous but I also do not want to be tricked it not doing unnecessary work.
As suggested I did get a professional to come in and have a look at the issue. He explained that my original idea of it being the pump is unlikely because of the issues with the trap and potentially the PCB.
I was perfectly happy to go ahead with them fitting a new trap but I thought I should check with you, as experts, to see if what he suggested made sense and was a fair price. Then a lot of you say I am being ripped off and that the trap can probably just be cleaned but that a picture would helpful. From memory I thought the trap was outside of the case and thought it would be easy to get a pic. When I got home I realised it wasn't but thought experts would not ask me to get a picture of something if I could not access it safely. If I should not have done it then I will not touch it again.
Based on the picture is the condition it is in caused by the trap itself, i.e. does it need to be replaced? Or is it just a normal build up of stuff that can be cleaned?
Depending on your answer I will then ask a professional to either clean or replace the trap? If that does not fix the issue get them to fix/replace the PCB or ignition electrode.
I am only trying to make sure I have enough information so that I can talk to whoever comes in with more knowledge than I did the last time to make sure I am not being conned into buying something that is not needed.
If there was a "Clean trap" button and you said I could press it then I would but I have no desire at all to do anything more complicated than that.