Alpha cb 28

tb475 · 16 Oct 2009

Hello, just came across this forum in my search for a possible answer to my question. i have an Alpha cb28 combi and when the heating is turned on it stays fired up for a few minutes allowing some rads to get heated, then it shuts down and the B light flashes every 5 seconds. The hot water works fine. thanks

twgas · 16 Oct 2009

Are the rads turned on (pins not stuck on TRVs, lockshields not shut)
Is there a filter in boiler return that needs cleaning?

ChrisR · 16 Oct 2009

Faulty temp sensors are common. The later ones are white.

diynot

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

Are you a trade or supplier? You can create your listing free at DIYnot Local

Alpha cb 28

tb475

twgas

ChrisR

DIYnot Local

Similar threads