Ta for the reply - short answer is, I don't know.
Not being a professional can I ask a stupid question..
Would it be obvious if the vent had a leak? would you see it when, say, the PCB was being replaced? (if you weren't really looking for it)
I see various posts about Ideal boilers but not for this, can anyone help?
Ideal m3080 has intermittent 'fault' when on timer - after coming on, green burner light on and error message reads ' - ' rather than any of letter codes, boiler no generating hot water or heating.
When turned on...