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Ravenheat LS80 wont fire up?

I recently shut the water supply to my combi boiler to fit a new shower (electric) and someone ran the hot water from a tap while the system was on. After finishing the job I turned the water back on and the boiler will not fire up for hot water or heating, you can hear it try then runs the pump for 2-3 minutes then nothing. Occasionally the pilot come red overheat LED lights up.

Any ideas?

RobertW
October 2015
RavenheatHeating, Home Heating SystemsRavenheat Water Combi Boiler

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