Grant 50 90 boiler not starting

IamTheWalrus95

Hi all, have a grant 50 90 euroflame boiker. After running FB out of oil earlier this year I presumed needs to be bled. Got a full of oil yesterday and a screwed the bleed screw and hit the rest button but it locks again after. No oil coming out when I loosen the bleed screw. Have tried it nunberous times. I presume I’m loosening the correct screw. Hex head on side of the pump and circled in yellow in attached pic

Wearb

Red arrow is the preferred for gravity bleeding, which you should try first. Blue arrow if using the pump (pressing the reset button) to bleed it.

You really should have a technician do it. It's been known for people to flood the combustion chamber by pressing the reset button too often when an airlock wasn't really the problem at all. That is one of the reasons that a gravity bleed is preffered. It can take quite a while if the tank is far away.

John.G

NO, I can't edit your photo in paint but its the one just underneath the bottom of the yellow circle and just to the right at the 5 oclock position, relative to the yellow circle, DO NOT TOUCH or adjust the one just above this as its the pump pressure regulator.

Its approx 13/15MM.

IamTheWalrus95

So it’s the one that needs a socket fitting?

IamTheWalrus95

Hey folks, still trying to get this sorted. If using screw with the red arrow, how long should i leave it open for gravity bleed?

Also, if using the one at the blue arrow, should i only open slightly and then try the reset button?

Wearb

If your tank is full and bottom of tank is higher than the burner and tank not too far away, then maybe 10/20 minutes (lots of variables) .

With blue bolt, loosen about a turn and a half and press reset. Be ready to tighten it quickly as a good force of spray will come out when all the air is expelled.

My caution above applies still.

IamTheWalrus95

Will try the gravity bleed again, the tank is about 10 m away so I will unscrew and keep an eye. I presume I don’t need to turn boiler on for this?

Wearb

Keep burner off for this. Don't leave it.

What level is oil in tank, full?

IamTheWalrus95

Tank is half full

Wearb

https://www.boards.ie/discussion/comment/119739640#Comment_119739640

Should come through, but if it doesn't you might have to go to the other way.

Most services techs would have a suction pump to pull it through the gravity outlet.

If you have a car tyre pump you can sometimes get it going by blowing back towards the tank. Just have someone listen until they can hear air bubbling in the tank. Then stop pumping and wait to see if the oil appears.

While lots of people bleed their own burners, I dislike the idea for the number of things that can go wrong. I'd always advise getting a competent person to do it.

jimf

looking at the state of that oil hose it might be a good idea to get the boiler serviced now and get bleeding done as well