Heatline Vizo 24 - fires up then cuts out - no water/heating

13 Sep 2014
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United Kingdom
I have a heatline vizo 24 combi boiler, I have no hot water or central heating.
The boiler fires up for around 20 seconds then cuts out.
The light on the front - a flame symbol with a line through it is flashing (showing an error I assume)
Have looked in manual, and not much help.
I have released all air from radiators, and tried to release any trapped air from kitchen tap.
Pressure is at 1.5

Pleas advise.
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Assuming it does light (ie you have gas), and as that's not the overheat (dead pump) indication, it sounds combustion related so you need a Gas Safe boiler mending person.

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