My Alpha CB 24/28 boiler has stopped working.
The red and yellow lights on the front of the boiler are flashing intermittantly, indicating that the pressure is low. I have increased the pressure using the filling loop, but the lights continue to flash and the boiler doesn't work. Any ideas?

Gareth, July 2010

If that dosen't sort it then it's probably a stuck low water pressure switch.

M, July 2010

If you have re-pressured so the needle is in the green area, try turning the HW/CH selector to position 3 (reset) and release

Carefree, July 2010