I had a new Ravenheat CSI 85 B T installed today. It worked for the plumbers who installed it - they left and went on to the next job.

My previous boiler (820/20) had finally given up the ghost after 15 years and this model was going cheap at Plumbase in Loughborough

So, the day went well. The plumbers left and I thought I'd give the system a check over.

My previous boiler was incapable of runnig a hot bath so I thought that would be a good test.

Half way though filling the bath the boiler tripped with the pilot/overheat light flashing. This fault quickly became worse and now when either DHW or CH are selected. The fan starts, the pump starts then after about 10 seconds there is a high pitched note and the boiler trips. As far as I can see the boiler never fires

I dont know how to tell if there is a spark but I'm in the area on Ravenheat's flow chart of the condensing sensor, air flow pressure switch and gas valve.

Ravenheat have got me pencilled in for a warranty visit on Friday - in the mean time it's cold showers and a wood fire for comfort!!

Can any one please help me to further isolate this problem so I can at least ensure that the Ravenheat man brings with him the most likely causes of this fault

Ralph Clingan, March 2010

we currently have the same problem, don't suppose you ever got your boiler sorted?!

kate, October 2012

Ravenheat man came on Friday and replaced the control electronics board with a spare from his van

He was pleasant, thorough and professional.

ralphc, March 2010