alpha cb24x red a light flashing

[bunna]

hi,
I replaced a radiator my conservatory, bleed it and re pressurised the boiler, ever since it has been tripping out on overheat (red light flashing), I have done this with several other radiators in my house and it has been fine. My guess was I have air in the system, before when I have done this you can here the air venting in the boiler, but this time I haven't. Does this sound like the automatic air vent has stopped working or is it likely something else?

Thanks Ryan

 

[jam1979]

Is the cap open on the vent also pump may need bleeding you could try adjusting the bypass as we'llwe'll

 

[Alpha man]

You local Ryan? If not, you're gonna need a GSR engineer to have a look for you!

 

[northcarr]

Get your axe out of the shed lol.

 

[bunna]

Is the cap open on the vent also pump may need bleeding you could try adjusting the bypass as we'llwe'll

The cap is off but hole had a bit of muck it so cleaned it out and I've bled the pump, but still no better, not sure what you mean by adjusting the bypass?

 

[jam1979]

The cap is off but hole had a bit of muck it so cleaned it out and I've bled the pump, but still no better, not sure what you mean by adjusting the bypass?

The bypass will be a valve near your boiler connecting the flow and return pipes together this may need adjusting

 

[kay-jay]

The bypass will be a valve near your boiler connecting the flow and return pipes together this may need adjusting

Wont be the bypass. He's replaced a rad not installed an extra one so system resistance shouldnt be dramatically altered.

 

[kay-jay]

To the op

How long does it take to lock out the boiler after it fires up. If its overheating pdq then it will be a circulation problem. Most likely air.

Try draining and refilling.

 

[Alpha man]

It won't be a airlock, it'd gonna need a part to fix this!

 

[jam1979]

Wont be the bypass. He's replaced a rad not installed an extra one so system resistance shouldnt be dramatically altered.

Oh yeah read it wrong aha