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Mend Alpha combi Combi Boiler Overheating Thermostat

Boiler overheating and tripping?

Hello,
I have a alpha combi boiler. Since yesterday, when i try to start the boiler, the flame starts to die down in 5 seconds, there is lot of pattering noise, the flame goes out completely, the pressure moves back and forth for 2 seconds and the overheat thermostat goes red and the boiler goes off. If I press the reset button, the whole above cycle repeats itself. Pls help.

ij
March 2011
AlphaAlpha combiHeating, Home Heating SystemsCombi Boiler Overheating Thermostat
check the pump unscrew large chrome nut in centre of pump then switch boiler on if you can't see it spinning the pump or capacitor is faulty

brian
March 2011

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Alpha Combi Boiler Overheating - Help!