Having bother with my HW and CH. When I want to turn on the CH using
the wall programmer, I turn the room thermostat up to about 24 degrees,
which is ok the heating comes on. However when I want both HW and CH
and use the programmer for this (set it to HW/CH) I still only get the
CH coming on. This is the same for just HW, I get CH only. The manual
switch on the 3 way valve in the airing cupboard next to the hot water
storage does not spring back to auto when moved to the manual positon.

Is this valve no good, I also fitted a new programmer which was
supposed to be a replacement for the old Honeywell unit, but I have my
doubts. Can some advise as to where to start??

On 19 Feb 2006 08:36:44 -0800, tommy wrote:

Is this valve no good, I also fitted a new programmer

What happened first? The new programmer or the fault?

--
Nigel M

In an earlier contribution to this discussion,
tommy wrote:

Having bother with my HW and CH. When I want to turn on the CH using
the wall programmer, I turn the room thermostat up to about 24
degrees, which is ok the heating comes on. However when I want both
HW and CH and use the programmer for this (set it to HW/CH) I still
only get the CH coming on. This is the same for just HW, I get CH
only. The manual switch on the 3 way valve in the airing cupboard
next to the hot water storage does not spring back to auto when moved
to the manual positon.

Is this valve no good, I also fitted a new programmer which was
supposed to be a replacement for the old Honeywell unit, but I have my
doubts. Can some advise as to where to start??

Sounds like the 3-port valve is permanently in the HW-only position. This
*could* be an electrical problem, but is more likely to be that the
mechanical bit of the valve is jammed.

You should be able to remove the actuator (the electrical bit) from the
valve in order to investigate. Most are just held on with a couple of
screws.

Once you have separated it, see whether you can turn the spindle of the
valve by hand. It should be possible to rotate it with finger and thumb - or
with *light* pressure from pliers. Then put the actuator through its paces
(while still removed) by selecting each CH/HW combination in turn (using the
programmer and stats) and see whether it moves into an appropriate position
for what is selected.
--
Cheers,
Roger
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Roger Mills (aka Set Square) wrote:
In an earlier contribution to this discussion,
tommy wrote:

Having bother with my HW and CH. When I want to turn on the CH using
the wall programmer, I turn the room thermostat up to about 24
degrees, which is ok the heating comes on. However when I want both
HW and CH and use the programmer for this (set it to HW/CH) I still
only get the CH coming on. This is the same for just HW, I get CH
only. The manual switch on the 3 way valve in the airing cupboard
next to the hot water storage does not spring back to auto when moved
to the manual positon.

Is this valve no good, I also fitted a new programmer which was
supposed to be a replacement for the old Honeywell unit, but I have my
doubts. Can some advise as to where to start??

Sounds like the 3-port valve is permanently in the HW-only position. This
*could* be an electrical problem, but is more likely to be that the
mechanical bit of the valve is jammed.

You should be able to remove the actuator (the electrical bit) from the
valve in order to investigate. Most are just held on with a couple of
screws.

Once you have separated it, see whether you can turn the spindle of the
valve by hand. It should be possible to rotate it with finger and thumb - or
with *light* pressure from pliers. Then put the actuator through its paces
(while still removed) by selecting each CH/HW combination in turn (using the
programmer and stats) and see whether it moves into an appropriate position
for what is selected.
--
Cheers,
Roger
______
Please reply to newsgroup.
Reply address IS valid, but is disposable in the event of excessive
spam.


Will try tomorrow as I'm on nightshift at 7 and the wife would like to
keep warm tonight she's not bothered about the water for now.
Thanks for the help, will post tomorrow

The new programmer

The new programmer

The new programmer

On 19 Feb 2006 09:12:57 -0800, tommy wrote:

What happened first? The new programmer or the fault?

The new programmer

In that case you have simply wired it up wrong.

--
Nigel M