Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

BAXI Luna 310 Fi

Options
Problem with my BAXI Luna 310 Fi. I use it for both hot water and radiant heat. I installed it myself about 10 years ago, replaced the PCB about 5 years ago.  Here is the current problem:  It will cycle for about 30 minutes fine, then it will overheat and not shut down even when the temp. goes up.  I believe this is also called a failure to modulate?   It will then blow off and shut down and gives a fault code of either 6 or 8.  Sometimes it gives the pilot fault code and sometimes the fan.  Thoughts?

Also how do you clean out the venturi and where is it located?

many thanks.
This discussion has been closed.