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OFCH Not Working

  • 06-01-2014 12:19pm
    #1
    bikerboy_ie
    Registered Users, Registered Users 2 Posts: 154 ✭✭


    Not sure what the problem is. When heat is called for the boiler (firebird with riel lo rdb burner) comes on and burner ignites. After maybe 5 or 6 mins it shuts off and can't be restarted via reset on boiler stat until boiler has cooled. The pump from boiler which is in the garage to the house seems to be whirring away happily enough. System link manifold isn't getting warm. We had a similar issue last year and water needed to be added to bring up the pressure. It seemed low when cold this time (about 0.2 bar) so I added water and brought it upto nearly 1 bar. Made no difference. Next I checked photocell which was fairly sooty. Cleaned the photocell as it wasn't visible. This kept the boiler on for longer but eventually went off and couldn't be restarted until it had cooled. Any ideas?
    Forgot to mention, the 3 pumps attached to the manifold are also working fine.


Comments

  • #2
    Froststop
    Registered Users, Registered Users 2 Posts: 445 ✭✭Froststop


    bikerboy_ie wrote: »
    Not sure what the problem is. When heat is called for the boiler (firebird with riel lo rdb burner) comes on and burner ignites. After maybe 5 or 6 mins it shuts off and can't be restarted via reset on boiler stat until boiler has cooled. The pump from boiler which is in the garage to the house seems to be whirring away happily enough. System link manifold isn't getting warm. We had a similar issue last year and water needed to be added to bring up the pressure. It seemed low when cold this time (about 0.2 bar) so I added water and brought it upto nearly 1 bar. Made no difference. Next I checked photocell which was fairly sooty. Cleaned the photocell as it wasn't visible. This kept the boiler on for longer but eventually went off and couldn't be restarted until it had cooled. Any ideas?
    Forgot to mention, the 3 pumps attached to the manifold are also working fine.

    Is the top of the boiler air locked? It could be cutting out on the high limit stat. If your pressure had dropped it may have air trapped. have you an auto air vent on the top of boiler or on the flow pipe?


  • #3
    bikerboy_ie
    Registered Users, Registered Users 2 Posts: 154 ✭✭bikerboy_ie


    I know there's an auto vent on top of the system link manifold. Not sure about the boiler though. I'll check it out and see. i did notice a bit of gurgling coming from the boiler yesterday so maybe it is air locked.


  • #4
    Froststop
    Registered Users, Registered Users 2 Posts: 445 ✭✭Froststop


    bikerboy_ie wrote: »
    I know there's an auto vent on top of the system link manifold. Not sure about the boiler though. I'll check it out and see. i did notice a bit of gurgling coming from the boiler yesterday so maybe it is air locked.

    I'd be surprised if it's not.


  • #5
    bikerboy_ie
    Registered Users, Registered Users 2 Posts: 154 ✭✭bikerboy_ie


    Just checked there. Can't find any signs of a vent or auto vent on or around the boiler. There's an over pressure blow off valve alright but no vent


  • #6
    Froststop
    Registered Users, Registered Users 2 Posts: 445 ✭✭Froststop


    bikerboy_ie wrote: »
    Just checked there. Can't find any signs of a vent or auto vent on or around the boiler. There's an over pressure blow off valve alright but no vent

    Thats your problem, if the system is cold twist the safety valve head, it only turns one way, keep turning until you hear it snap or click, see if you get air or water. If you get air keep doing it until you get water.

    If this is the cast it will sort you until you can get a vent fitted. If you run out of pressure, top it up a bit. When finished set pressure to 1-1.5 bar.


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