Chaffoteaux MX2 24 ff 70 80 fault

[spike.gb]

I have a customer with an intermittent 70 80 fault on a Chaffoteaux Mx2 24ff, could anyone explain what a misfiring safety feature is please. every time I call the boiler is in a fault state yet works without a problem after I reset it. no matter what I do I cant get the boiler to go to fault, yet it needs regular resetting in my absence. Any help appreciated.

 

[lame plumber]

not on an open forum Im afraid. having said that I'm wondering now why an untagged op is in the private forum?

 

[Barry98]

Removed

 

[Barry98]

Removed , there will be the odd old member in but they need reporting