Alpha CB28 won't behave - I'm so cold...

[lscolman]

Hi,

Alpha CB28 had water diverted fitted two weeks ago.

Red and yellow lights on yesterday indicated a non running fan.

My plumber came out and pressed down on a relay on the board and the boiler kicked into life.

Coming home, and it's not firing up.

It now shows the usual yellow led every 5 seconds indicating its getting electrical feed, but all efforts to get it fire do nothing.

Any ideas please? Its freezing tonight, and I really want a bath.

Cheers, Lee

 

[lscolman]

Looking at the service manual, it says pump runs and fan runs at max speed (yes) which I believe it does.

The next part of the check is air pressure switch proved? Am I checking the voltage across the switch?

Is it worth me trying a new PCB? It's not doing anything but the yellow B LED 5 seconds to indicate electrical supply.

Please help!

Cheers, Lee