Click here to Find a Contractor in your area.
Welcome! Here are the website rules, as well as some tips for using this forum.

If you've found help here, check back in to let us know how everything worked out.
It's a great way to thank those who helped you.
Need to contact us? Visit

Riello F3 hiccups

TLMTLM Posts: 38Member
I have a 3yr old Biasi B10-4 w a F3-40. Has run great till now. The flame drops and then it restarts does this a few times and locks out. Upon reset it acts the same. It finally proves and stays running. I’ve set the pump pressure to 170psi and have a .60 60*W nozzle. I’ve changed the oil line, have a spin on oil filter. I changed the solenoid thinking that will be the easy fix. No. Changed the control and it worked for a few months but it’s back. Thoughts?
Mount Pleasant Plumbing and Heating Inc


  • HVACNUTHVACNUT Posts: 2,182Member
    How long before flame failure?
    Have you done a combustion test to see where your at or it doesn't run long enough to test?
    If you set the air and turbulator to the book, that's just a starting point. Adjustments must be done with an analyzer.
    Does it have the hydraulic air gate? If it opens during pre purge, its getting oil to the fuel pump.
    Describe the sequence of the cycle and recycle before lockout.
  • Big Ed_4Big Ed_4 Posts: 1,122Member
    Using the smoke tester , see if you can cut the air down a bit..
    I have enough experience to know , that I dont know it all
  • Cut the air back and do a smoke test, want "0" smoke , then close shutter a bit, to much air and flame will walk of the retention head and do what your describing
Sign In or Register to comment.


It looks like you're new here. If you want to get involved, click one of these buttons!