Mahammad came twice to repair it. The first time he came, he checked the gas and electricity, and asked me to get the electricity circuit checked first, see if it was electric problem. He recommended a electric engineer, and that engineer came over and spent an hour, finally he told me the electricity was fine. Then I told Mahammad the electricity was fine. Mahammad ordered a control panel for the boiler and came over again to replace it, the problem still existed and he found it was elecity problem. I have spent over 300 pounds on it and the problem was still not solved.