I've just fitted a new Cylinder Thermostat same as this :

http://www.heatandplumb.com/acatalog...hermostat.html

Its been wired up same as previous stat : 1= Yellow 2= White 3= Blue &
Earth

I sparked up the system and left it running for half an hour (usually
long enough for reasonably hot tank of water) I then turned down the
temp. control to see at what point it shut off, It didn't !! I turned
it down to lowest setting 20 deg.C still no joy.

Is it a faulty stat ? or incorrectly wired ?

Cheers

On 27 Jun 2006 05:42:52 -0700, KnobJockey wrote:

I've just fitted a new Cylinder Thermostat same as this :

http://www.heatandplumb.com/acatalog...hermostat.html

Its been wired up same as previous stat : 1= Yellow 2= White 3= Blue &
Earth

I sparked up the system and left it running for half an hour (usually
long enough for reasonably hot tank of water) I then turned down the
temp. control to see at what point it shut off, It didn't !! I turned
it down to lowest setting 20 deg.C still no joy.

Is it a faulty stat ? or incorrectly wired ?

Without knowing what wires go where at the other end of the circuit (i.e.
at the controller/wiring box end), it's impossible to comment with any
authority, although my immediate reaction would be to suspect that it was
incorrectly wired - for a start '3=blue and earth', which is nonsensical
taking a quick look at the installation instruction leaflet that is linked
from the page you listed. You did take a look at that link, didn't you?

If you've connected an earth wire into what could be potentially a live
circuit, never mind about how it was wired before, then you don't
understand what you're doing and should consult an electrician.

--
the dot wanderer at tesco dot net

"The Wanderer" wrote in message
...
On 27 Jun 2006 05:42:52 -0700, KnobJockey wrote:

I've just fitted a new Cylinder Thermostat same as this :

http://www.heatandplumb.com/acatalog...hermostat.html

Its been wired up same as previous stat : 1= Yellow 2= White 3= Blue &
Earth

I sparked up the system and left it running for half an hour (usually
long enough for reasonably hot tank of water) I then turned down the
temp. control to see at what point it shut off, It didn't !! I turned
it down to lowest setting 20 deg.C still no joy.

Is it a faulty stat ? or incorrectly wired ?

Without knowing what wires go where at the other end of the circuit (i.e.
at the controller/wiring box end), it's impossible to comment with any
authority, although my immediate reaction would be to suspect that it was
incorrectly wired - for a start '3=blue and earth', which is nonsensical
taking a quick look at the installation instruction leaflet that is linked
from the page you listed. You did take a look at that link, didn't you?

If you've connected an earth wire into what could be potentially a live
circuit, never mind about how it was wired before, then you don't
understand what you're doing and should consult an electrician.

Re-read the post. I maybe wrong but I took it that the OP meant to say 3
=blue plus there is also an earth connection.

I would guess that if all 3 terminals are being used on a cylinder stat then
it is probably a Y plan and the fault may lie in the midposition valve not
the stat.

Adam

In an earlier contribution to this discussion,
KnobJockey wrote:

I've just fitted a new Cylinder Thermostat same as this :

http://www.heatandplumb.com/acatalog...hermostat.html

Its been wired up same as previous stat : 1= Yellow 2= White 3= Blue &
Earth

I sparked up the system and left it running for half an hour (usually
long enough for reasonably hot tank of water) I then turned down the
temp. control to see at what point it shut off, It didn't !! I turned
it down to lowest setting 20 deg.C still no joy.

Is it a faulty stat ? or incorrectly wired ?

Cheers

Who knows? Without more information about what type of system configuration
you have (S-Plan, Y-Plan, C-Plan, etc.) and what is at the other end of the
yellow, white and blue wires, it's impossible to say.
--
Cheers,
Roger
______
Email address maintained for newsgroup use only, and not regularly
monitored.. Messages sent to it may not be read for several weeks.
PLEASE REPLY TO NEWSGROUP!

On Tue, 27 Jun 2006 15:39:51 GMT, ARWadsworth wrote:

"The Wanderer" wrote in message
...
On 27 Jun 2006 05:42:52 -0700, KnobJockey wrote:

I've just fitted a new Cylinder Thermostat same as this :

http://www.heatandplumb.com/acatalog...hermostat.html

Its been wired up same as previous stat : 1= Yellow 2= White 3= Blue &
Earth

I sparked up the system and left it running for half an hour (usually
long enough for reasonably hot tank of water) I then turned down the
temp. control to see at what point it shut off, It didn't !! I turned
it down to lowest setting 20 deg.C still no joy.

Is it a faulty stat ? or incorrectly wired ?

Without knowing what wires go where at the other end of the circuit (i.e.
at the controller/wiring box end), it's impossible to comment with any
authority, although my immediate reaction would be to suspect that it was
incorrectly wired - for a start '3=blue and earth', which is nonsensical
taking a quick look at the installation instruction leaflet that is linked
from the page you listed. You did take a look at that link, didn't you?

If you've connected an earth wire into what could be potentially a live
circuit, never mind about how it was wired before, then you don't
understand what you're doing and should consult an electrician.

Re-read the post. I maybe wrong but I took it that the OP meant to say 3
=blue plus there is also an earth connection.

A missing comma adds greater validity to my understanding.

Have I said what I mean? Did I mean what I said?

--
the dot wanderer at tesco dot net

In article .com,
KnobJockey wrote:
I've just fitted a new Cylinder Thermostat same as this :

http://www.heatandplumb.com/acatalog...hermostat.html

Its been wired up same as previous stat : 1= Yellow 2= White 3= Blue &
Earth

I sparked up the system and left it running for half an hour (usually
long enough for reasonably hot tank of water) I then turned down the
temp. control to see at what point it shut off, It didn't !! I turned
it down to lowest setting 20 deg.C still no joy.

Is it a faulty stat ? or incorrectly wired ?

Why did you replace the original? If it was because of the same 'fault',
it isn't the thermostat. More likely a valve.

--
*I don't suffer from insanity -- I'm a carrier

Dave Plowman London SW
To e-mail, change noise into sound.

To clarify matters, the earth is fitted correctly to its own connection
(not attached to any other). I have replaced a sunvic stat (which works
ok) with the danfoss because the danfoss has more of a lower temp.
range.

Also with the new danfoss there is no audible click when the control
knob is turned (either when hot or cold)