Hi
I have a alpha cb50.
Light a red is solid
Light b yellow is flashing
Had a new pump replaced a year ago grundfos Alpha 2L
And put the old casing on as it had a self bleed ait valve
My hot water works perfect.
Central heating is not working at all. But only a few radiators warm up but seems no circulation
I have removed the diverter valve. And checked the bypass valve. Bit of cleaning but no issues with them as problem is still there
It's starts of circulating but ends up cutting off.its like it's overheating but doesn't go around the system
Any help is grateful
I have a alpha cb50.
Light a red is solid
Light b yellow is flashing
Had a new pump replaced a year ago grundfos Alpha 2L
And put the old casing on as it had a self bleed ait valve
My hot water works perfect.
Central heating is not working at all. But only a few radiators warm up but seems no circulation
I have removed the diverter valve. And checked the bypass valve. Bit of cleaning but no issues with them as problem is still there
It's starts of circulating but ends up cutting off.its like it's overheating but doesn't go around the system
Any help is grateful
