[iyonix-support] Re: Iyonix Panther temperature

Quoting charles <charles@xxxxxxxxxxxxxxxxxxxxxxx>:

> In article <42b8b1ac4f.martin@xxxxxxxxxxxxxxxxxxx>,
>    Martin Wuerthner <lists@xxxxxxxxxxxxxxx> wrote:
> > In message <1132.88.202.214.154.1213007928.squirrel@xxxxxxxxxxxxxxxxxx
> > .co.uk>
> >           "Tony Todd" <tonytodd@xxxxxxxxxxxxxx> wrote:
> 
> > >> In article <4facb08bc3tricia@xxxxxxxxxxxxxxxxxxxxxx>,
> > >>    Tricia Garner <tricia@xxxxxxxxxxxxxxxxxxxxxx> wrote:
> 
> > >>> The Iyonix Panther here has for most of its life not been switched on
> > >>> 24/7 but we have now connected a 1-Wire Weather Station to it so it
> > >>> is working constantly. We have noticed that when the on-board
> > >>> thermometer displays temperatures above 31C some applications, in
> > >>> particular NetSurf and Oregano2, can fail. Is there a known problem
> > >>> with higher temperatures or is it more likely to be an intermittent
> > >>> problem which may never be solved?
> > >>
> > > Does 31 C count as hot ?
> 
> > > It is after all less than body temperature?
> 
> > Indeed, you would expect a computer to work happily even if the room
> > temperature is 31C, in which case the interior of the machine is
> > likely be quite a bit hotter than that. The Iyonix Welcome Guide
> > specifies that the machine should operate correctly at a room
> > temperature of up to 35C.
> 
> My copy of the User Guide doesn't say quite that.  It states "Keep the
> machine at a room temperature of +5°C to +35°C."  It doesn't say anything
> about the machine operating correctly.
> 
> Certainly in the past, when I used to maintain electronic equipment, a room
> temp of more that 90°F did tend to produce overheating faults.  Remember
> that components are often trying to dissipate heat by convection.  The
> higher the room temperature, the less heat will be lost by convection.
> 
> You should note that ASHREA (American Society of Heating, Refrigeration and
> Air Conditioning Engineers) recommends a maximum temperature of 25°C for a
> computer room.

Yes, and with the typical equipment housed in the typical computer room
that ASHREA is thinking of, that would be sound advice.  That sort of
equipment often dissipates a lot of power in a small case.

The Iyonix is a different matter.  Its power density is relatively
low.  An internal case temperature of 31 Celsius seems unlkiely to
be high enough to cause malfunction - unless the Iyonix is faulty
in some way.

Are the software malfunctions definitely temperature-related, or do
they just appear after the Iyonix has been on a long time - which
merely happens to correlate with temperature?  If we can establish
whether temperature really is the cause, then it's unlikely that the
fault can be cleared by anything other than sending it back to Iyonix
Ltd.  If the malfunctions happen after the machine has simply been on
a long time, then we need to track down a software malfunction.

Dave


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