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  1. O

    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.
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    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.
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    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
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    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.
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    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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    Riello 40 g3b (oil boiler)

    Start at the tank and bleed any filters before doing anything on the burner. If you have an isolation tap at the burner, turn it off and remove the flexible hose into the oil pump so you can be sure you have oil to that point. Replace that hose, then remove the hexagon plug at the bottom of the...
  9. O

    Boiler lock out after firing

    I would try a new photocell for what it costs before a control box.At that age, a boxand cell would only be about £50-£60. (i'm assuming a B11 burner.)
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    Worcester 12/18 danesmoor oil schmelly when operating

    Riello pumps are notorious for leaking from the shaft seal when running. This creates a smell, but the heat of the pump and motor evaporates any leaks. disconnect and remove the pump to check.
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    Boiler lock out after firing

    Have you tried firing the burner wit the photocell out, but covered and releasing to light when fired? If the burner continues normally, then further inspection of the flame pattern etc is required. Have you tried the start up with a pressure gauge on the pump? It could be that the initial...
  12. O

    Oil boiler - intermittent lockout

    If you can see spark through the peephole, then so can the photocell. This can give a false flame signal that causes lockout and stop the solenoid valve opening.
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    New boiler - electric shower question

    When the Government says you can only buy electric cars from 2030, there is not a lot of action you can take. When we were told and encouraged to buy diesel cars and even given financial inducement to do so, what else can you do? You can't blame installers or manufacturers whovhave to comply...
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    HRM Wallstar lockout

    If there is no movement in the solenoid stem, then that is faulty.
  15. O

    Riello 40 FS10/GS10 not firing up in winter

    OOPS!
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    Riello 40 FS10/GS10 not firing up in winter

    what oil is this running on, 35 sec 0r 28 sec?
  17. O

    Worcester Bosch Riello burnerd

    Sooted boiler is ALWAYS down to too much fuel/too little air. Having taken out the burner and cleaned it is insufficient; you need to clean out all the baffles and flueways and ensure that the air intake is clear and that the burner fan is clear. As long as the burner runs when clean, the tiger...
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    2 Tall radiators not getting hot only tepid

    Are both rads off the same single 10mm feed? If so, you may be trying to get a quart out of a pint pot.
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    Frost stat heating radiators

    The manufacturers recommendation is for the pipe frost stat to be set at 25c ish. This means that the indoor circuit will be above this before the return reaches in the target temperature in the garage. In the past, where customers have baulked at the 'waste' of fuel, I have moved the pipe stat...
  20. O

    Wallstar 15/20 green light but nothing else

    You need to start following circuits as already suggested by @Stuckinarut .
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