Riello VCOM 26 Oil Burner

[Davidcgriffiths]

Grant Vortex Combi Boiler
Just had service on boiler & burner & left with a fault,
When heating called for CH pump starts & Burner LED lights.
Burner fan can be heard but runs for about 15 mins before it ignites.

later in day after running found burner being called for but no fan running. Turned on hot tap & burner started fine & then one Hot water satisfied it switched over to Central Heating

Any advice appreciated as Engineer stumped

 

[Exedon]

Has your engineer checked out if board is working correctly?
Probably best thing to do is talk to Grant technical stood in front of boiler (you will need a multimeter).
Grant are excellent at back up, in stark contrast to some other oil boiler manufacturers who abandon you the second boiler is out of warranty.