"RJH" wrote in message
...
On 15/12/2014 22:15, naffer wrote:
A week or two ago my daughter asked me to have a look at her CH.
The heating was very intermittent. She had a Siemens thermostat in the
sitting room with a wireless receiver in the airing cupboard upstairs
alongside the combi. No heating.
On checking on the web I found that it was suggested that the the Siemens
receiver might have a known problem with a "sticky - relay" that could
be corrected with a rap of a knuckle.
This simple & temporary fix worked & I suggested that she had a word with
the Co. that did her CH about 2-3 years ago to see if this is a known
problem & could be subject to a warranty fix.
The fitter called & confirmed that it was probably a "sticky relay" &
said that since Siemens don't sell the receiver unit alone he would have
to replace to thermostat & receiver. He charged over £100 for this
wisdom.
He went on to say that it could be possible to "clean the relay" (see
below *) but it would be better if she re-installed with Honeywell kit,
which is better!
Two days ago my son called me to say that his partner's property had
problems with its CH. Yes, another Siemens system installed at a similar
time. Similar symptoms. Same installer/fitters.
So I replaced my daughter's kit with a Honeywell ChronoTherm system. It
is now totally OK as the fitter had suggested.
Amused by the fitter's observation that the relay is the failing unit &
could have some dust in it, I took the failing Siemens receiver apart.
The relay is a sealed component and I suppose I could unsolder it &
replace, fixing it seems a bit extreme. He was talking ********, unless,
of course he knew that Siemens were buying sealed relays from dusty
Chinese Cos.
BTW: A neighbour had two Siemens receivers fail - allegedly due to a
power outage - he has a big house with an upstairs/d9ownstairs system.
Coincidence: Possibly but it may be that Siemens is selling something
that ain't fit for purpose.
Thoughts ????
This?:
http://www.uk-plumbing.com/siemens-r...r-p-51291.html
Mine would lose wifi for no particular reason, and need a masonic blend of
button holds to reset. In fairness, their telephone support was superb,
but I swapped it out after a couple of fails.
I was going to suggest the same model.
I have fitted hundreds of them and they are (or certainly were) a pile of
****e.
--
Adam