Hi guys need help asap. Right here we go, round my in laws the chimney stack fell over ripping flue liner out. So I installed new flue liner in chimney. But the flue sections to boiler were espesdos so I had to rip out. I had to do a bit of a bodge today and fire cement the liner to boiler. Until monday when flue sections arrive so inlaws had heating for the eve. But now boiler wont ignite the fan works and pump its all working apart from the electrode not sparking so pilot wont ignite and burner to. Could it be the ttp sensor ???