On Mon, 30 Oct 2017 21:58:26 +0000, Andy Burns coalesced the vapors of human experience into a viable and meaningful comprehension...
According to the 7th post here that's EXCATLY what it's for.
Obviously since 2011, you have gone around the bend.
It obviously means that people wearing top hats cannot go down the chinmey and should use the ladder. :-) Brian
You are responding to a post made in 2011.
The symbol refers to a chimney sweep, and probably to settings that are to be set by someone who knows what they are doing, and possibly measuring what they are doing.
The small ladder is to get to the top of the chimney from the roof, rope and brush, etc. The CO2 analyzer, IR thermometers, soot analyzer, laptop ... are left outside the photo for picturesqueness. Also the crystal ball that tells the sweep whether you are having a problem with a gas, oil, wood fired heater, etc.
Thomas Prufer
More likely to call for maximum output, sweeps measure CO/CO2 and flue temps and calculate the efficiency of the boilers at that operating point.
Thomas Prufer
This typifies everything that is bad about icons. I'm sure it was very obvious to the person who designed the icons that a top hat and a ladder "obviously" signify whatever it is that they signify. But I haven't a clue. Maybe there's a vague association between a ladder and a tradesman - as in "don't do this yourself, get a skilled heating engineer". What's the significance of the rocket that's been crossed-out (above the "-"). And the person symbol - what is the meaning of that in the context of a boiler? The circle with a triangle inside (top display) is probably the timer, but what's the double-triangle to its right?
I have no problem with well-known icons like the play/ff/rew/pause icons on tape recorders, CD players etc; the petrol pump symbol on a car's fuel gauge; - and + for decreasing and increasing a quantity. But there are many icons where I can't even work out what the icon depicts, never mind what it signifies.
I'd like to see greater use made of words - maybe in addition to icons. Being English, I'd make a case for those words being English, not only because it's my language but also because it's probably the most commonly-understood second language. At least you can look up a work in a dictionary (assuming you know what language it is!) whereas you can't look up an icon in an alphabetic list.
Its probably supposed to symbolise a chimney sweep... Vaillant boilers have a diagnostic mode where you can get them to run the fan at max speed to attempt to blow anything out of the flue that should not be there.
In message , John Rumm writes
Probably right, given that the top hat is the traditional sign of a chimney sweep.
Is it? I never knew that. A chimney sweep's brush (long pole with a ring of bristles at right angles to the shaft) would have been a much better icon for them to use.
If they allowed speech bubbles as well, the sweep could be saying "this is a right PILLOCK of a job", which is the phrase a chimney sweep used every few minutes to describe the problems of sweeping our chimney which goes up and then bends at 45 degrees in two directions, making it difficult for him to reach some of the soot to shovel it out into the bag after he'd loosened it with the brush. Now whenever I don't want to do a difficult job, I have a standing joke with my wife: "it'll be a right pillock of a job" :-)
Be careful what you wish for, Vaillant in general tend to go for rather Germanic English at times. For example, low primary system pressure on the boiler is reported on the remote weather compensator / prog stat with the elegant "service heat generator" message ;-)
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