ii would reduce the pressure to 1.5 bar and try the boiler in heating only mode and htng with hot water to see if its a boiler or system fault, cdi s blue light normally flashes if the boiler is faulty
john
September 2010
pressure should be between 1 and 1.5 bar just remove some water from the rads and pressure will drop they have no pilot lights as they auto ignite
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