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    Worcester 20/25 heatslave not firing

    Hi Thanks for replies, it looks like there is more to this than meets the eye, the boiler has a valve on the top which has a black plastic valve cap ( like on a car) and it has water coming out of it, not the expansion bottle opposite that, looking at pictures it's the automatic air vent Unsure...
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    Worcester 20/25 heatslave not firing

    Sorry did not mean to ..
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    Worcester 20/25 heatslave not firing

    To be honest I am not sure what it's doing, I hear the boiler start to run but I can't hear the whoosh that usually followed ( if that makes sense, whoosh being the boiler lighting I guess?).
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    Worcester 20/25 heatslave not firing

    When I press the reset button the boiler runs but then the lock out light comes on and a few minutes later the boiler switches off again. If I switch off water and heating at the timer the lockout light goes off and as soon as I switch either on again the lockout light comes on again...
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    Worcester 20/25 heatslave not firing

    For an oil fired boiler? Oftec engineer for oil boilers is it not. I was ideally looking for someone to point me in the right direction to repair it myself.
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    Worcester 20/25 heatslave not firing

    hi I am looking for help please, my 20/25 is not firing up and locking out. I have added water to give me 1.5 bar of pressure reset the lockout but it refuses to fire and just locks back out.. Any one help ? Thanks in advance Aqueousosprey
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    Heat slave 20/25 oil boiler heating problem

    Cool thanks again P.s I will probably be back for wiring instructions!!!
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    Heat slave 20/25 oil boiler heating problem

    So just any boiler programmer will do the job? Drayton Lifestyle LP522 5/2 Day Electronic Programmer £45?? Then just wire it up ..
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    Heat slave 20/25 oil boiler heating problem

    You are a star! Thank you so so much for sticking with me ... One last question! I see there are wireless controllers available do you know if there is one that would fit my boiler so I could control it from inside the house rather than having to go out to the garage every time I want to, say...
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    Heat slave 20/25 oil boiler heating problem

    Grey - 0.055 v ac until ping then 243.6v ac Brown - 243.6v ac
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    Heat slave 20/25 oil boiler heating problem

    Thanks for this info I really do appreciate your time. ok so I've tested the pink and orange wire with boiler set to heating on and heating stat turned up full and I have no power going to either. One quick ping on the front and I heard the relay click and 240v turns up.... any ideas where to...
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    Heat slave 20/25 oil boiler heating problem

    Fair point ! can anyone then explain the correct procedure to test it? How it works? Having not done this before it's a bit of a SLOW learning curve.. It has three wires coming from it Pink centre (1), orange left (c), and yellow right (3) they go to x13 connector (heating stat)on the pcb...
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    Heat slave 20/25 oil boiler heating problem

    Ok..... I've checked all the connections to the pcb and to the back of the dials and I have ( I think) found something ... when I used to turn the heating dial I think I heard it click in two places ( lower and upper limits of the temperature thermostat) ?? I now hear no clicking at all when...
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    Heat slave 20/25 oil boiler heating problem

    Thanks, I'm not really sure where the thermostats are sorry! are they incorporated in the green temperature switches to adjust the water and heating temp on the front of the boiler.?
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    Heat slave 20/25 oil boiler heating problem

    Thank also for your reply, the boiler does have how/ch programmer on the panel, I will check for loose connections on this. Not sure how to loop ch timer outputs but i am willing to give it a go if you could give me a bit more info on how and where to do this?
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    Heat slave 20/25 oil boiler heating problem

    Thanks for your reply, how would I bypass the programmer connections?
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    Heat slave 20/25 oil boiler heating problem

    Hi all Hope someone can help me fix this problem! I have a 20/25 boiler that is giving me trouble. The heating does not come on automatically in the mornings or afternoons. If I go to the boiler and tap / ping the front of the boiler between the hot water and heating green control knobs i hear...
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    Worcester heatslave 20/25 using lots of oil?!?

    Yeah I had to bleed the radiators myself and it took them two days to complete! AQ In that case they will be experts in communications, but perhaps not in boilers! Sounds as if the mixture is too rich and they did not measure or reset it. In fact sounds as if they just replaced the...
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