Oil Burner not firing

clodola · 08-10-2021 7:04pm #1

Burner: Riello 40 B10

Oil tank has plenty of oil (it never ran out)

It was serviced back in June/July , plumber had to come back as it was not working after service , he said it was an airlock, was last used and working in July

I tired to fire it up last week , nothing

I tired the reset button on the front (red button) , nothing

I am confused where the bleed valve is , everything I come across online has a long protruding pipe with an allen key head

I presume first thing to do is check if its airlocked, maybe it was not bleed correctly ?

Nothing to my knowledge was adjusted since it last worked

listermint · 08-10-2021 7:15pm

Is the pump kicking in and then just not firing or what?

Wearb · 08-10-2021 7:15pm

If its not making any sound its not an air lock that you first need to fix.

Has the high limit stat tripped. Its beneath that little cap beside the boiler thermostat.

clodola · 08-10-2021 7:23pm

https://www.boards.ie/discussion/comment/117994675#Comment_117994675

Pressing the red button or turning on the heating , nothing , no pump sound

JustJoe7240 · 08-10-2021 7:25pm

It's the bottom bolt on the left hand side.

As said above, Hi limit may have tripped beside the thermostat. Stating the obvious I know, but is the power definitely switched on in the hot press?

listermint · 08-10-2021 7:25pm

https://www.boards.ie/discussion/comment/117994700#Comment_117994700

As above check the stat. But also could be electrical issue. If the boiler has a plug socket could be fuse. If it's wired to fused spur could be fuse. Could also be the heating control not sending power to activate.

clodola · 08-10-2021 7:30pm

https://www.boards.ie/discussion/comment/117994678#Comment_117994678

I presume the thermostat is the big blue box on top, Little cap , as in the the center of the unit? appears to be a blanking cap (yellow high light)

Nearly sure this had a reading i.e 60 on it , appears to be at low end of the scale

clodola · 08-10-2021 7:43pm

https://www.boards.ie/discussion/comment/117994709#Comment_117994709

Worth checking with a multimeter if power is going to the burner ?, it has a black control box , few junction boxes on the wall , everything is working in the boiler room

This is in the garage outside (boiler room) , all the oil burners are in there ; no idea why they have two in this house , the big blue one and another smaller for the main house (is working fine), the control box for the septic tank is in there , working fine

I have never seen so many pumps , property must have at least 5-6 pumps I have seen , at least 3 in the house , 3-4 in the boiler room

John.G · 08-10-2021 7:51pm

Flexible oil line also needs renewing.

listermint · 08-10-2021 7:53pm

If there's no power to the burner it's being cut by the thermo or the supply to the thermo. Should check the burner supply for power.

clodola · 08-10-2021 8:10pm

https://www.boards.ie/discussion/comment/117994808#Comment_117994808

Plumber was reluctant to do it at service as I had 300 litres of oil in the tank

jimf · 08-10-2021 11:54pm

https://www.boards.ie/discussion/comment/117994884#Comment_117994884

would be more important to change that hose than service burner

clodola · 09-10-2021 12:36pm

Got it working, as mentioned the high limit stat tripped

What causes it to trip?

clodola · 09-10-2021 12:52pm

https://www.boards.ie/discussion/comment/117996067#Comment_117996067

Will try get another plumber, 2nd plumber I had out, replaced an expansion vessel, 272 euro fir 10 to 15mins work and I had to supply the parts, he never braced it, so I had to redo, feckin thing was leaking at more than 1 point (obviously the previous plumbers fault, who touch it a few years back) , I was left without water as he forgot to turn on a valve, when I asked if he checked the psi on the expansion vessel, he got annoyed, he just slapped it up

1st plumber was back n forth to the house 6 times, kept telling me its working, when I tried, heatimg, hot water, nothing... No idea why lads don't verify everything is working before they leave, no leaks.. It takes them more time and frustration on both sides, do it once, do it right

Really is difficult to get a person to do it correctly, I have to spend my time on forums, YouTube tutorials, reading manuals

jimf · 09-10-2021 9:09pm

https://www.boards.ie/discussion/comment/117997080#Comment_117997080

temp set too high on run stat

low in water/ system pressure

failed or gammy circulating pump

airlock

running with a dual system without non return valves

clodola · 11-10-2021 11:10am

Thanks Jim

Oil Burner not firing

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