''pump & fan working'' but boiler not firing
boiler not completely dead then
assuming the combustion casing is on properly & AIRTIGHT my guess would be the AIR PRESSURE SWTCH not making when fan is running
you could try giving the boiler casing a good hard whack with the palm of hand near the location of the APS [I believe the top right hand rear corner of the boiler]
this might help ''encourage'' the APS to operate normally
if that doesnt work try calling ravenheat technical helpline 0113 252 7007
not my favorite boilers to work on
very difficult to diagnose
very expensive spare parts
very difficult & time consuming to replace parts
I tend to avoid them at all costs
Q
June 2015