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experts

An expert is somebody who has a broad and deep understanding and competence in terms of knowledge, skill and experience through practice and education in a particular field. Informally, an expert is someone widely recognized as a reliable source of technique or skill whose faculty for judging or deciding rightly, justly, or wisely is accorded authority and status by peers or the public in a specific well-distinguished domain. An expert, more generally, is a person with extensive knowledge or ability based on research, experience, or occupation and in a particular area of study. Experts are called in for advice on their respective subject, but they do not always agree on the particulars of a field of study. An expert can be believed, by virtue of credentials, training, education, profession, publication or experience, to have special knowledge of a subject beyond that of the average person, sufficient that others may officially (and legally) rely upon the individual's opinion on that topic. Historically, an expert was referred to as a sage. The individual was usually a profound thinker distinguished for wisdom and sound judgment.
In specific fields, the definition of expert is well established by consensus and therefore it is not always necessary for individuals to have a professional or academic qualification for them to be accepted as an expert. In this respect, a shepherd with 50 years of experience tending flocks would be widely recognized as having complete expertise in the use and training of sheep dogs and the care of sheep. Another example from computer science is that an expert system may be taught by a human and thereafter considered an expert, often outperforming human beings at particular tasks. In law, an expert witness must be recognized by argument and authority.
Research in this area attempts to understand the relation between expert knowledge, skills and personal characteristics and exceptional performance. Some researchers have investigated the cognitive structures and processes of experts. The fundamental aim of this research is to describe what it is that experts know and how they use their knowledge to achieve performance that most people assume requires extreme or extraordinary ability. Studies have investigated the factors that enable experts to be fast and accurate.

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  1. Z

    Any Worcester Heatslave Experts?

    Hi Folks I'm wondering anyone here, has any indepth knowledge on the Worcester Heatslave Combi Boiler. This boiler is quite old (2006) but it has been very reliable, and also runs at superb efficiency when tested, regularly serviced etc. The boiler is in a very old stone cottage (built 1791)...
  2. S

    URGENT Low loss header trouble experts only please.

    Any heating lads help a brother out I've fitted a low loss header on a system. 4 storey house previous engineer piped full thing in 22mm using a vissemann v100 combi 4 additional zones and with just the standard boiler pump to run it all with an 60sqm underfloor heating zone with its own pump...
  3. K

    Ferroli experts? A01 fault code

    Hi, is there any ferroli experts here? Looking for some advice on a Ferroli i29, attended a couple of times on an A01 fault code, cleaned condensate trap, hose, also connection at p trap. Tested all working when left on both occasions but the fault reoccurs in a week. Any advice would be greatly...
  4. N

    CALLING REZNOR EXPERTS :)

    Good Afternoon Not sure this is the right section for this question but will start here and move if you think there is a more suitable section for it. I have a garage workshop car repairer modern building it is fitted with a suspended from the ceiling Reznor Gas heater model UDSA043 This...
  5. Riley

    Any hive experts ....

    I have a customer who is having a completely brand spanking new heating system put in but they were gifted a hive thermostat as a housewarming gift and I really want to use it in the in install. I make no apologies for never having fitted one as I prefer other brands but I am confused with...
  6. S

    One for the Vaillant experts.

    Hi guys, last year I was called to a ecotec pro 28 with a goosed pump.... sure it was a wilo. I replaced with the grundfos conversion kit, but I’ve had a call tonight off the customer that the pump is very noisy again. I asked them to send me a recording and it’s definitely making a racket...
  7. Sid Viscous

    Viessmann experts - advice please

    Evening all, having a few issues with a Vitodens 100 WB1B combi. About 9 months I had to change the p2p hx & dhw flow switch. All fine until this morning when custard called to say he had no c/h, hot water fine but boiler running constantly with water icon on screen. Had a look just now &...
  8. Sid Viscous

    Viessmann experts, advice please

    Evening all, having a few issues with a Vitodens 100 WB1B combi. About 9 months I had to change the p2p hx & dhw flow switch. All fine until this morning when custard called to say he had no c/h, hot water fine but boiler running constantly with water icon on screen. Had a look just now &...
  9. L

    CH Experts - Correct solution to renew seal?

    Hi all, Pics: Main drain for the CH system - at the lowest point of the system. It is 25 years old - and I cannot easily replace it. It is leaking. Q: How does this particular drain plug/fitting create its seal (when tightened). It is directly exposed to the elements all year round. Is...
  10. G

    Worcester Bosch Greenstar Heatslave 18/25 Oil Combi Lockout Issue

    Hi, I'm new to this forum and the question may have been asked previously, but if it has I can't find anything. My problem is that the boiler seems to always "Lockout" during the night and has to be reset in the morning to fire up. Sometimes it fires up briefly then locks out again. When you...
  11. A

    Evohome experts

    Any evohome gurus here? I am looking at a system but dont think it is possable to do so need some guidance. System boiler with unvented cylinder in loft space. Every room downstairs has wet UFH over a 12 zone manifold. Upstairs we have a traditional radiator system of a 'open' rad on the...
  12. Riley

    Any Potterton experts out there ...

    I really never come across these boilers in my neck of the woods so I'm at a bit of a loss with this one. Potterton Performa 28. Frustrating intermittent fault, boiler was losing pressure but I recharged expansion vessel and that seemed to stop it until the past couple of days. Every other...
  13. D

    Professional Plumber Required Seeking Plumbing and Heating Experts

    Hi all, hope it's ok to post this here? Experts work from home, taking video calls from our customers and diagnosing home repair issues. Where they can, they offer a solution - where they cannot, they book a home visit. Technicians are our team on the road, visiting customers and repairing...
  14. F

    A few questions to plumbing experts

    Hello everyone, I am Peter, new here, nice to meet you all experts! My house has insulated brick cavity wall, old double glazed aluminium windows which sit on wooden frames, open vented heating system, boiler the Worchester Green star 15Ri, 8 radiators in house. 1. Recently I had 7 radiators...
  15. C

    Boiler experts, advice need

    Hi all first post, I am a plasterer by trade so have limited knowledge about boilers. i am getting the keys to my new house end of the month. It is going to be fully plastered out and new electrics. The boiler is approx 14 years old according to the owner. It is a British Gas combi and still...
  16. M

    One for the Glow Worm experts..

    I don't suppose the Betacom 30C has the same jig or pipe spacings as the lexicom 30cx by any chance?? It would make my day if they are the same... :)
  17. B

    Water leak through outside cavity wall.

    Hi, hope I am in the right place. This leak is on our entry wall comes through the mortar when the toilet flushes, bathroom sink taps running and the kitchen taps downstairs. There is no leak inside house. Any ideas please would be appreciated. Thanks Bonny
  18. P

    Any vaillant experts ?

    On the old vcw combis does the black plastic heat ex now get replaced with a new metal type plate to plate ?
  19. G

    Baxi 80E any experts out there !!

    My cousins boiler so not earning much off this. DHW runs perfect, fires boiler and stays on until you close the tap. CH fires up, runs about 5 seconds drops flame and goes flame failure, last week I changed the CH sensor as it was late evening and I had a spare new one on the van. Checked all...
  20. C

    Vaillant circuit board / diverter valve query... Vaillant experts needed!

    Hi, Noticing that the heating wasn't working I've changed the diverter valve on my vaillant turbomax (installed 2006ish and only ever used for hot water... Until now) The diverter valve can be set manually (frigged) to make the boiler deliver hot water or CH, but won't switch...
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