I must say that this has been the one and only time Google has failed me. I shall remedy that by adding my knowledge into it's vast compendium.
I was trying to be productive yesterday, and work on some videos, but I had to deal with this dreaded 10E Baxi Luna 3 comfort fi 310 error. Now the problem was simple enough my boiler needed to be re-pressurized, but there was absolutely no helpful information anywhere online to guide me in such a simple task. I ended up having to call my electrician while he was at home, and he walked me through it step by step over the phone. Now I'm no HVAC expert, but if you're having this issue, and can't figure out how to fix it and we happen to have the same boiler here you go a video, and a written step by step guide to fixing the problem!
Baxi Luna 3 Comfort pressurizing video
- Cut the power to the boiler (If you know how also cut the gas).
- Check the pressure gauge it's numbered from 0 to 4 it should be some between 1 and 1.5.
- Next to the pressure gauge is a water spout that releases pressure if it's too high. Keep this in mind of you accidentally raise the water pressure too high.
- Look right under the boiler and you will see a long red knob. Turn that counter clockwise and the boiler will fill with water. You can hear the water rushing in.
- Fill until you have the desired pressure of 1.5 and turn the knob clockwise.
- Do Not Fill Past The 1.5 Mark. You Have Been Warned.
Well Joshen what happens if you raise the pressure too high? well I got the advice from an expert all the way in the U.K. Allan also known as @thegasengineer has been in the business for 25yrs, and he provides "professional service across the Central Belt, covering Edinburgh, The Lothians, Falkirk, Stirling & Lanarkshire." So if you need some HVAC services, throw your business his way you will be in good hands. Link to his website here.
The Danger of Over-pressurizing Your Boiler:
"Water expands as it heats, which if the pressure is too high to start with, will get the boiler near the safety blow-off. The safety blow-off is normally about the 3bar. So it will blow-off, lose pressure, top-up too high, blow-off..vicious circle, etc."
All resulting in you not having any hot water, and possibly screwing up the boiler.
Now I'm not sure just how many Baxi Luna 3's are out there in the wild, but I do know every person in my apartment complex has one, and if this helps just one person then my work is done! I would also like to thank @thegasengineer for responding to my plea for help on twitter, and explaining to me the dangers of raising the pressure too high.