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Riello burner problem

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  • 21-01-2014 7:54pm
    #1
    cruiser202006
    Registered Users Posts: 366 ✭✭


    Riello 40 burner problem this evening! Motor and fan running fine solenoid clicks on and burner runs fine for a minute then stops for a second then starts and so on! Ruled out control box and photocell! Am I looking at a problem in fuel pump?


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    #2
    jimf
    Registered Users Posts: 3,949 ✭✭✭jimf


    what pressure are you getting at fuel pump

    how did you check control box and photocell


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    #3
    cruiser202006
    Registered Users Posts: 366 ✭✭cruiser202006


    jimf wrote: »
    what pressure are you getting at fuel pump

    how did you check control box and photocell

    I'm gettin 8 bar at fuel pump. Checked wit a new control box and photocell and problem is persisting


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    #4
    jimf
    Registered Users Posts: 3,949 ✭✭✭jimf


    cruiser202006 wrote: »
    I'm gettin 8 bar at fuel pump. Checked wit a new control box and photocell and problem is persisting

    did you check the nozzle


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    #5
    agusta
    Closed Accounts Posts: 1,590 ✭✭✭agusta


    Id agree with jim,It could be a partially blocked nozzle.It seems like the fan could be blowing out the flame.You could lower the air on the air box and see does it run better.It would have to be set up with a flue gas analyser to get it right.You should fit a new nozzle if you dont have a new one fitted


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    #6
    cruiser202006
    Registered Users Posts: 366 ✭✭cruiser202006


    jimf wrote: »
    did you check the nozzle

    Brand new nozzle! Burner hasn't burnt a tank of oil in 3 years and hasn't been serviced since installed 9 years ago! Problem could be happening for a while as there an old couple and probably never noticed. Can't seperate solenoid from needle valve as nut is seized on top and needle valve and nut are spinning together! Had neither a solenoid or pump for old riello in van to try


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    #7
    jimf
    Registered Users Posts: 3,949 ✭✭✭jimf


    what kind of boiler is this burner fitted to any chance you have a flugas recycling issue going on

    have you checked filters at tank and pump

    how about condition oil did you check for water contamination


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    #8
    agusta
    Closed Accounts Posts: 1,590 ✭✭✭agusta


    cruiser202006 wrote: »
    Brand new nozzle! Burner hasn't burnt a tank of oil in 3 years and hasn't been serviced since installed 9 years ago! Problem could be happening for a while as there an old couple and probably never noticed. Can't seperate solenoid from needle valve as nut is seized on top and needle valve and nut are spinning together! Had neither a solenoid or pump for old riello in van to try
    It either a lack of fuel or over aired.It best sort out the the needle valve and see is it opening fully.wd 40 would help you free the nut


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    #9
    cruiser202006
    Registered Users Posts: 366 ✭✭cruiser202006


    Thanks lads. Calling back tomorro wit a pump so I'll drop the air on it first to see if it solves de problem.


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    #10
    jimf
    Registered Users Posts: 3,949 ✭✭✭jimf


    also make sure you no obstruction in the flue or flueways through the boiler if it hasn't been serviced in 9 years jaysus you could find anything in there


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    #11
    DGOBS
    Hosted Moderators Posts: 3,496 ✭✭✭DGOBS


    +1 on recycling, is it an outdoor module, what boiler?
    Is there any fluctuation on the oil pressure leading up to the lockout (could be blocked filter or fire valve so starvation of fuel)


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    #12
    shane0007
    Closed Accounts Posts: 4,677 ✭✭✭shane0007


    For a fuel supply issue, check the fuel pump with a vacuum gauge. If it starts pulling negative pressure, it's a supply issue.


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    #13
    TPM
    Registered Users Posts: 871 ✭✭✭TPM


    I was at a boiler before christmas that in their words "untill now never gave any trouble" my translation "was never serviced"
    Similar symptoms to op, but the cause was the boiler being blocked solid with soot and crap from years of decreasing combustion efficiency.


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    #14
    DGOBS
    Hosted Moderators Posts: 3,496 ✭✭✭DGOBS


    You should be able to hear the pump under duress easy enough if a supply issue and see it on the pressure gauge, can't even remember last time I had to pull out the vacuum gauge


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    #15
    agusta
    Closed Accounts Posts: 1,590 ✭✭✭agusta


    jimf wrote: »
    also make sure you no obstruction in the flue or flueways through the boiler if it hasn't been serviced in 9 years jaysus you could find anything in there
    +1


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    #16
    jimf
    Registered Users Posts: 3,949 ✭✭✭jimf


    TPM wrote: »
    I was at a boiler before christmas that in their words "untill now never gave any trouble" my translation "was never serviced"
    Similar symptoms to op, but the cause was the boiler being blocked solid with soot and crap from years of decreasing combustion efficiency.


    they can take some abuse in fairness


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    #17
    shane0007
    Closed Accounts Posts: 4,677 ✭✭✭shane0007


    DGOBS wrote: »
    You should be able to hear the pump under duress easy enough if a supply issue and see it on the pressure gauge, can't even remember last time I had to pull out the vacuum gauge

    Just a simple tool to 100% confirm a supply issue over a pump issue. I generally find fuel pump flicker issues can be from both supply & pump issues, so the vacuum just nails it.


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    #18
    TPM
    Registered Users Posts: 871 ✭✭✭TPM


    jimf wrote: »
    they can take some abuse in fairness

    thats the biggest problem with them, they just keep going so people forget about them and tent to assume they dont need servicing, I generally ask them would you expect your car to go for "5" years with out servicing of maintenance, Usually gets a nice facial expression


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    #19
    Wearb
    Moderators, Home & Garden Moderators Posts: 6,213 Mod ✭✭✭✭Wearb


    jimf wrote: »
    also make sure you no obstruction in the flue or flueways through the boiler if it hasn't been serviced in 9 years jaysus you could find anything in there

    I would be inclined to go down the route of an air problem also. Either on output side or intake.

    What was the make of the Boiler? Did you strip all the baffles out and check the flue-ways?

    Please follow site and charter rules. "Resistance is futile"



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    #20
    cruiser202006
    Registered Users Posts: 366 ✭✭cruiser202006


    Disconnected flexi hose at pump first before I put a new hose on as Old one on since installation plus thought it was being starved of oil but deres a good flow. Gonna lower de air first and see if it solves de problem and take it from there.


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    #21
    cruiser202006
    Registered Users Posts: 366 ✭✭cruiser202006


    Wearb wrote: »
    I would be inclined to go down the route of an air problem also. Either on output side or intake.

    What was the make of the Boiler? Did you strip all the baffles out and check the flue-ways?

    It's a firebird 70/90 heatpac model baffles combustion chamber and flue all cleaned and checked


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    #22
    jimf
    Registered Users Posts: 3,949 ✭✭✭jimf


    cruiser202006 wrote: »
    It's a firebird 70/90 heatpac model baffles combustion chamber and flue all cleaned and checked

    is your issue happening with the door on and off


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    #23
    shane0007
    Closed Accounts Posts: 4,677 ✭✭✭shane0007


    cruiser202006 wrote: »
    Disconnected flexi hose at pump first before I put a new hose on as Old one on since installation plus thought it was being starved of oil but deres a good flow. Gonna lower de air first and see if it solves de problem and take it from there.
    If it's an air issue (combustion issue), it would show on your FGA. If it's a re-circulation issue, this would show only when door is on or the FGA would also assist inside the casing. If the door is off & the issue still arises, it is unlikely to be a re-circulation issue.


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    #24
    cruiser202006
    Registered Users Posts: 366 ✭✭cruiser202006


    Door is off when problem is occurring! Didn't put the analyser on it but will put it on it tomorro.


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    #25
    Wearb
    Moderators, Home & Garden Moderators Posts: 6,213 Mod ✭✭✭✭Wearb


    cruiser202006 wrote: »
    It's a firebird 70/90 heatpac model baffles combustion chamber and flue all cleaned and checked

    Did you check the tank for water or/and dirt? Was the pump filter clean? Nothing floating around the air-box? Otherwise you are left with the few things that you haven't managed to replace.

    Please follow site and charter rules. "Resistance is futile"



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    #26
    jimf
    Registered Users Posts: 3,949 ✭✭✭jimf


    had 1 like this last year fuel pump was slipping

    but was showing on p gauge as fluctuating pressure but was engaging again so not going to lockout


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    #27
    cruiser202006
    Registered Users Posts: 366 ✭✭cruiser202006


    Air box and filters clean! Pump isn't fluctuating! Staying at a constant 8 bar!


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    #28
    DGOBS
    Hosted Moderators Posts: 3,496 ✭✭✭DGOBS


    Check for a flue gas leak either between the burner and mounting flange, or the door gasket directly above the the burner, if a bad on can recycle even with cabinet door off

    Set your o2 to 5.5% make sure it isn't over aired


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    #29
    scudo2
    Closed Accounts Posts: 2,008 ✭✭✭scudo2


    cruiser202006 wrote: »
    Air box and filters clean! Pump isn't fluctuating! Staying at a constant 8 bar!

    Bad nozzle or crack across control box where electrodes connect = no spark at nozzle ?

    EDIT . Sorry I forgot you already tried a different box.


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    #30
    jimf
    Registered Users Posts: 3,949 ✭✭✭jimf


    did you get this sorted today


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    #31
    cruiser202006
    Registered Users Posts: 366 ✭✭cruiser202006


    jimf wrote: »
    did you get this sorted today

    Got sorted after thanks! Overaired! Simple fix! Cheers for de help!


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