I have a Brivis Baffalo 20.

I k now the therostat is working, last night it worked for the first time in months.

Go to try it today and no go, the pilot light will not go on. Clicks twice then red light flashes 7 times

I have brought a thermocoupler, went to replace it, but it looks harder then what people have said, due to limited space. Also I cannot find any specific instructions for this model.

Any idea?