Glowworm Hideaway 80B cut-out

[johnjw29]

My Glowworm Hideaway balanced flue boiler keeps cutting out and the green reset light comes on. I turn the knob to reset and the boiler will re-ignite though it does seem to have some difficulty doing this - sometimes re-ignition is on the second or third attempt. I have to do this several times each day to get sufficient hot water and central heating.
I've had part of the ignition mechanism replaced but without improvement.
The boiler is seven years old and has had no problems up to now.
I'd be grateful for any suggestions as to where the problem lies.

 

[45yearsagasman]

It sounds like you have the 80BFF and not the 80B. Is that correct? Makes a lot of difference.

 

[johnjw29]

It sounds like you have the 80BFF and not the 80B. Is that correct? Makes a lot of difference.

Hi Pete,
Yes, it is the 80B FF. I didn't realise significance of FF.
Just to add a little bit that may be important - I recently had a un-vented cylinder system fitted so that hot water from hot taps and showers is at cold mains pressure. This has worked fine for a few months but now the problem I've described.
I'll be pleased to have your comments
Thanks,
John