Identify heating controller

[littlespark]

Morning all.

I’m sure all you human beings will be quicker and more accurate than google…
Can anyone identify this heating controller.
Looks like it’s missing a flap on the bottom…

 

[ipf]

Not off hand……have you tried unplugging it …see if there’s a bit more info inside?

 

[Mikegh]

If only there was a database where you could upload a random image and then download a bunch of technical info

 

[littlespark]

I would have taken it off the wall, but there was so much crap on the floor to get near it.

I’ll have a gander through internet later…

 

[loz2754]

Avertissement de redirection

 

[loz2754]

Looks like Google is quicker and more accurate than us human beings after all?

 

[littlespark]

Well, its an old programmer... and nothing really is a straight replacement.
I could change the brand, but as you can maybe see, there's a wall pillar to the left... and sometimes the mounting frame is on the other side.

There must be a back box being used as wiring centre behind that.

 

[Mikegh]

Looks like the mvs and boiler wired at back alright

Is it giving any trouble , would the reserve be working now or would it even have one

Design looks as good as any of the modern 2 channel type except the display maybe, oh I see there's a slider broken

 

[ipf]

Take it off and have a look. There'll be wiring details for the base...so you should be able to find a model number.
Why do you want to know, for operating instructions, maybe?

 

[Avo Mk8]

Well, its an old programmer... and nothing really is a straight replacement.
I could change the brand, but as you can maybe see, there's a wall pillar to the left... and sometimes the mounting frame is on the other side.

There must be a back box being used as wiring centre behind that.

A Danfoss guide to an early electronic programmer FP975, which itself is a plug-in replacement for yours, suggests there were other plug-in replacements at that time.

https://assets.danfoss.com/documents/29940/AN007586405450en-GB0101.pdf

One of the straight plug-ins shown in the compatibility tables near the front of the booklet is a FP715si
(there's a wrinkle in that this FP975 has a little switch "Mk9 backplate wiring / SET backplate wiring", which presumably means there a wire that would need moving on the backplate - the mechanical interface appears the same for both)

I observe that FP715si 's do crop up from time to time on eBay, not cheap, but I guess that may not be attractive - there's none available today as far as I can see

But there is someone on EBay selling a brand of programmer (new) he claims is a plug-in replacement for the FP715si

Danfoss FP715Si 2 Channel **DISCONTINUED**- DIRECT SUBSTITUTE NO WIRING | eBay

The FP715Si is discontinued! in DEC 2019 Danfoss Stopped making the FP715SI.

www.ebay.co.uk

The inference being that (plug-in wise) an eBay EPH R27-HW = Danfoss FP715si = Danfoss FP975 = Randall 922


But it might just be simpler to rewire to suit a modern equivalent! ?
Sorry - what a convoluted trail - what was I thinking? ?

 

[littlespark]

Take it off and have a look. There'll be wiring details for the base...so you should be able to find a model number.
Why do you want to know, for operating instructions, maybe?

Basically, it’s busted.
The little sliding switch to move heating from off, to auto, to on etc, is broken, and very stiff to move as it is.

Getting the exact same would mean the customer doesn’t have to learn how to set a new programmer.

There’s a huge price range, so just going for a bog standard.

 

[decca 591]

Morning all.

I’m sure all you human beings will be quicker and more accurate than google…
Can anyone identify this heating controller.
Looks like it’s missing a flap on the bottom…

View attachment 91200

I know its an old post, but i have the same controller, mine is a Randall 922, the timer is malfunctioning. My heating and water seem to work on the pre programmed defaults (06:30 -08:30) but my settings dont, the burner operates - but not on full flame so only warms slightly. More concerning, i have noticed my heating operates when the lever is in the off position ???
Discuss...

 

[decca 591]

I know its an old post, but i have the same controller, mine is a Randall 922, the timer is malfunctioning. My heating and water seem to work on the pre programmed defaults (06:30 -08:30) but my settings dont, the burner operates - but not on full flame so only warms slightly. More concerning, i have noticed my heating operates when the lever is in the off position ???
Discuss...

Quick update, in with our service our guy is quoting us to replace our Randall 922 with a TR4.
Anyone disagree or suggest a better option ??

Cheers all !!

I know its an old post, but i have the same controller, mine is a Randall 922, the timer is malfunctioning. My heating and water seem to work on the pre programmed defaults (06:30 -08:30) but my settings dont, the burner operates - but not on full flame so only warms slightly. More concerning, i have noticed my heating operates when the lever is in the off position ???
Discuss...

 

[decca 591]

Quick update, in with our service our guy is quoting us to replace our Randall 922 with a Honeywell T4R .
Anyone disagree or suggest a better option ??

Cheers all !!

 

[mainline]

Quick update, in with our service our guy is quoting us to replace our Randall 922 with a TR4.
Anyone disagree or suggest a better option ??

Cheers all !!

You need to get someone whos competent to have a look at it.

I would disconnect the timer and ensure that the valves/boiler etc are all working as they should before actually changing it.