Holiday mode

[Sabatinitennis]

My central heating system has two Honeywell thermostats (ground and upper floors) and a Honeywell control box in the airing cupboard on the first floor that controls the unvented water cylinder.
All have a "holiday" button, which, if I've read the bumph correctly, makes them drop to 10° for the duration of one's holiday.
Now ......do I need to turn all of the thermostats to "holiday" mode, or just the one in the airing cupboard that controls the water cylinder?
The photo shows the one in the airing cupboard, next to the water cylinder.

 

[Mottie]

On my Honeywell programmer (which controls both my heating and hot water) the holiday mode just switches everything off until you are coming home. So, no heating or hot water while I’m away but on the day I’m coming home, they will both switch back on so that I come home to a warm house and a cylinder of hot water. They will heat to whatever the respective thermostats are set at.

 

[Sabatinitennis]

Thanks, I'm wondering why I've got so many thermostats....anyway know why?

 

[Mottie]

Thanks, I'm wondering why I've got so many thermostats....anyway know why?

You just have two from what you say - one for each floor. Means that you can have the upstairs heating on during the night in deep winter for example, without wasting money by also heating up the downstairs. I’d like that.

 

[Sabatinitennis]

Ah, I see.
I appear to have a rather highly sophisticated system ....with freeze control built in too.
But which of these do I turn to holiday mode when I go away? All three?

 

[Johnmdc]

Yes all 3

 

[ianmcd]

My central heating system has two Honeywell thermostats (ground and upper floors) and a Honeywell control box in the airing cupboard on the first floor that controls the unvented water cylinder.
All have a "holiday" button, which, if I've read the bumph correctly, makes them drop to 10° for the duration of one's holiday.
Now ......do I need to turn all of the thermostats to "holiday" mode, or just the one in the airing cupboard that controls the water cylinder?
The photo shows the one in the airing cupboard, next to the water cylinder.

Yet again, that is a programmer it is not a thermostat of any kind it knows absolutely nothing of the temperature where it is sited

 

[Sabatinitennis]

Ok, thanks,.
.
.
But which of these do I turn to holiday mode when I go away? All three?

 

[ianmcd]

set that at 24 hours constantly on and the two thermostats at 5 degrees C

 

[Sabatinitennis]

Obliged.

 

[Madrab]

Not looking to contradict @ianmcd here but @Sabatinitennis , from your last posts,
https://www.diynot.com/diy/threads/hotter-water-wanted-from-cylinder.556532/page-2,

I believe you have that single channel programmer in the cupboard to control your hot water and another honeywell CM907 programmable room thermostat that controls your central heating.

This 2nd thermostat you have, is it the same as the pic?

 

[Sabatinitennis]

I must say that I am getting confused too. Yes both thermostats look like the one in the photo above.
There is a "holiday" mode on my thermostats depicted by a little suitcase plus, there is a "holiday" mode on the control panel inside the airing cupboard.
So.....if I turn both of my thermostats to this "holiday" mode, do I need to adjust the control panel in the airing cupboard too??
I have attached photos of the control thing in the airing cupboard AND my thermos ...now I just need an answer!!!

 

[Madrab]

now I just need an answer!!!

Not the way to go about asking for advice TBH @Sabatinitennis!!!
=======

Both CM907's (CH) set to 5deg and MAN. This is an always on setting but will only run the boiler if the temp falls below 5deg

You can set the programmer in the cupboard (HW) to holiday and then switch it back when you return, though you will have to wait for the HW to heat back up again when you return though - anywhere from 30 odd mins to over an hour.
It may be a good idea to familiarise yourself with the manuals for both programmers and try out some settings.

 

[Johnmdc]

Already given by me. All 3.

 

[Madrab]

Already given by me. All 3.

And if it freezes when away?