rick wrote:

Baxi Barcelona, under service contract - in May this year started giving
intermittent €˜explosive ignition €¦ when it happens gives a seriously
loud bang
This boiler had been upgraded to 100HE spec some years gao.

Multiple visits and loads of parts €¦ fault just got worse €“ was also now
failing to ignite and going into Lock out .. every couple of days.

What is the number of red led lockout flashes you are getting
is the gas valve modulating correctly when it is working

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