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  • danesmoor wont start

    my oil boiler wont start up, once the heating timer turns on the power light on the boiler shows red as you would expect but the boiler doesn't attempt to start.
    can anyone give me a pointer as to where to start to test what i will need replace ,

  • #2
    There should be a reset button on the burner, usually red; push in and if it starts then the boiler should now fire up, if it does not click there may be an electrical fault, if it tries to start 2 or 3 times then cuts out the burner may need looking at, when was the last service done, it might just need a good service to bring it back to life, but make sure that you change the burner nozzle (listed in the instructions, dont go by the one fitted; it might be wrong) also change flexible oil line, these can perrish and cause a lot of damage, they do not cost much but are worth doing

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    • #3
      Assuming you have pressed the reset may i ask the obvious if you have checked to see that your oil tank is not empty?. I know a number of people who have had their oil tank topped up and then had the oil nicked.
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      • #4
        Originally posted by alan_bayford View Post
        There should be a reset button on the burner, usually red; push in and if it starts then the boiler should now fire up, if it does not click there may be an electrical fault, if it tries to start 2 or 3 times then cuts out the burner may need looking at, when was the last service done, it might just need a good service to bring it back to life, but make sure that you change the burner nozzle (listed in the instructions, dont go by the one fitted; it might be wrong) also change flexible oil line, these can perrish and cause a lot of damage, they do not cost much but are worth doing
        Thanks for answers , its a danesmoor 15/19 and i cant for the life of me find any reset buttons anywhere , looked on the worcester site at the manual and its not where they it should be .yes i have plenty of oil (the lockout doesnt come on as its not even trying to start) traced all the wire and nothing has any type of reset button.

        any other thoughts ,

        thanks

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        • #5
          Hi Buzz. We're gas, not oil but my company does have a massive library of manuals which includes a set for you boiler all in PDF format. If you would like me to email you a set just ask at DormouseHeating@gmail.com. James.
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          • #6
            Originally posted by dormouseheating View Post
            Hi Buzz. We're gas, not oil but my company does have a massive library of manuals which includes a set for you boiler all in PDF format. If you would like me to email you a set just ask at DormouseHeating@gmail.com. James.
            these are taken direct from the instructions;

            Remove the appliance front cover and depress the lockout reset button on the burner. (See section “Lockout”.)

            Single pipe systems only
            Release the fuel bleed port on the manifold and place a suitable receptacle beneath. Turn on the boiler thermostat. Set the programmer to heating and hot water and allow the burner to run through to lockout. Wait two minutes and reset the burner control box. Repeat the procedure at least three times or until a steady stream of oil, without air, is exhausted from the bleed port. Re-lock the bleed port.

            Two Pipe System
            A two pipe system will automatically vent the air back to the oil tank. Turn on the boiler thermostat and allow the burner to run through to lockout. Wait two minutes and reset the burner control box. Repeat the procedure untill the burner fires and runs in a steady state. This may take several attempts depending on the oil pipe length and height.

            12.10 Adjust the air shutter and pump pressure to the settings recommended in Tables 2 to 9. After a pre-ignition period of approximately 15 seconds the burner should ignite. Flame sensing is carried out by means of a photocell mounted in the burner body. Should the boiler fail to establish a normal firing pattern (or should flame failure occur during running), the absence of a flame is sensed and the control box is monitored to a safe lockout condition and the boiler is shut down. The lockout indicator light in the boiler control panel will illuminate indicating that the burner has gone to lockout. In this instance wait two minutes and press the red lockout reset button mounted in the burner control box. Another start sequence is then initiated. Repeat the procedure until a flame is stablished.

            Note: Persistent lockout when running indicates a fault and a Service Engineer should be consulted.

            According to the MI's the reset is located either attached to a clear perspex control box behind the front panel or at the bottom right of the front panel display.
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            • #7
              Same Here

              I have a floor mounted RS Danesmoor 15 /19 in lockout. The manual says press the illuminated lockout reset button but there isnt one. I have plenty of oil.

              Ive read some of Worcester's poorly written manuals, one says the button is mounted on the 'Control Box' which in the manual is shown as the metal cube object at the top (burner?) and another seems to point to it being on the underside of the electrical control panel near to where the connector connects. There is some black plastic screwed into a hole there but no button.

              Yet another manual says the button is 'IN' the control box. There does appear to be the over temp reset button on the control panel but this is wobbly so I assume it is ok.

              Can anyone help with the location of this elusive button? is it behind the insulation? And finally, why doesnt the manual show its location properly?

              Many thanks!

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              • #8
                Hi
                The first thing I'd be looking at is the control box. This is situated on the lower part of the burner and should be a satronic if memory serves me correctly. It's a clear rectangular box with a clear round button on it (this is the burner lock out button)

                What should happen is power goes to the control box which then starts the burner fan, primes the oil pumps etc. As your burner isn't even attempting to fire and isn't locked out then I'd suspect the control box is faulty.

                One other thing to check is the boiler overheat cut out stat. This is situated on the underside of the metal panel at the top of the boiler that contains your main circuit board (where your red power light and temperature control are) Rather than it being a switch it's just a nipple that you'll feel with your fingers, push that in just to check that your boiler hasn't overheated. Also check your boiler pressure, it should be at least 1/2 bar for the boiler to operate.

                Let me know how you get on

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