no heating or hot water

[rossi678]

I have an Alpha CB28 combination boiler and it is not working at all. The bottom neon indicator light is flashing every second and the helpline suggests it is a temperature sensor fault. I have had it replaced and it still does not work. i have also replaced the flow switch The boiler appears to fire up for a few seconds and then it clicks off again, so the light is only staying on for a short time

 

[steve1973]

Hi Rossi,

Does the pump kick in, you should be able to hear it.

 

[rossi678]

Hi, thanks for the reply, sometimes you can hear the pump and then every thing seems as it shuts down, and all i get is the flashing yellow light,