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  1. O

    Riello 2.2 burner

    Air damper settings specified in any manuals are next to useless. Settings need to be made specifically to a burner, ideally with an analyser, once all oil pressures have been verified. The old fashioned way of doing this was to set to 'smoke' and then back it off a little but this is a time...
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    Riello 2.2 burner

    If your boiler was set up 'lean' in warmer weather, it may now be too lean to provide a valid flame until it warms a little, and the photocell will initiate reignition. Without a full combustion analysis to eliminate this it is difficult to comment further
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    Need to optimise gravity HW & pumped CH system

    This is a very basic system by the sound of it. On a gravity H/W system heating alone cannot be selected. With the Hot water on and the boiler running, you can switch the pump to get heating. A room stat could control the pump and therefore the heating, and the boiler stat will control the flow...
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    Expansion Vessel

    The difference between a dribble of condensation water and the flow of primary water from a failed expansion vessel is very noticeable.
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    Riello 2.2 burner

    Check your fuel supply/filters for frozen sludge.
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    Worcester heatslave 15/19

    What is the full model of the Heatslave? 15/19 is a relatively old model, and is the 'reset' button actually the overheat stat?
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    Frost Stat Queries

    What we don't know, and maybe ,neither do you, is how the last boiler was wired. For the frost stat on the return to reach 20c, then the rest of the system will be at or above that temperature (all through the house). Many of my customers did not want, or need that levle of protection, and I...
  8. O

    RIELLO RDB FAN MOTOR BEARINGS

    You need to investigate the reason for the noise. It is usually allied to a leaking shaft seal on the pump.
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    HELP! Central heating pump knackered!

    If you turn down the speed on a combi like yours you may adversly affect the hot water temperature. Combi's usually run on top speed.
  10. O

    BSA Hotspur Oil Boiler

    Danesmoors are a totally different proposition. As long as the boiler itself is sound, there are generic components for everything else that may fail.
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    Oily smell from Worcester Bosch Greenstar Heatslave 2 25/32

    If the oil line enters from the rear, which I'm thinking is normal, then that is the place to check. Isolation valves are not an uncommon feature to leak around the shaft or connections, but also the swaged ends of flexible hoses are a common source of leaks. If yours have not been changed...
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    Worcester Heatslave 20/25 Pump Problem

    Get busy with your multimeter and follow the fault finding guide. Before you start replacing PCB's check for failed end switches in motorised valves and flow switches.
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    Gas smell from boiler after switching off CH

    I would monitor this for a day or so, if it continues then call engineer back.
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    Worcester Heatslave 20/25 Pump Problem

    I would suspect a fault with the diverter valve from your description of radiators heating, but would also check that wiser is wired correctly.
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    Gas vs oil worries

    If installing the gas supply is free, then take it. If it means you need to pay a pernicious standing charge, then don't. With the current lack of an objective energy policy , like the song, the answer is Blowing in the Wind.
  16. O

    Riello 40 g3b (oil boiler)

    Did you successfully bleed the fuel?
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    Gas smell from boiler after switching off CH

    Get your engineer back.
  18. O

    Bath waste clicker or turn overflow type

    https://www.screwfix.com/p/flomasta-captive-basin-waste-32mm/64920 No cables or springs. Nothing to go wrong
  19. O

    Central Heating Controller turns on both water and heating

    Remove the programmer from the back plate and ensure the switch on the back is set for a Y plan. The switch on the back should be set for P for pumped.
  20. O

    Riello burner not firing

    Which reset are you trying? Apart from the burner reset, There is a boiler limit thermostat which has a reset beneath the plastic ca;p on the control thermostat. Trying to fire with the photocell removed will still need the photocell to be obscured.
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