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Discuss replacing programmer in the Central Heating Systems area at ElectriciansForums.net

Probably will be, but without knowing the details of the system it's impossible to say from looking at the front of it.
The only possible issue I can see is if the system is Gravity dhw and the new programmer doesn't have that option.

Best bet is to get an electrician to do the swap, any electrician should be able to deal with this, if they can't I'd be a bit worried!
 
Probably will be, but without knowing the details of the system it's impossible to say from looking at the front of it.
The only possible issue I can see is if the system is Gravity dhw and the new programmer doesn't have that option.

Best bet is to get an electrician to do the swap, any electrician should be able to deal with this, if they can't I'd be a bit worried!


never done central heating wiring buddy

I would assume its l,n,e and a sl for hw and a sl for heating

ease up fella- i seeked quick advise on a forum.................
 
never done central heating wiring buddy

I would assume its l,n,e and a sl for hw and a sl for heating

ease up fella- i seeked quick advise on a forum.................


Depending on what plan or valve/s are used then you use different connections on the programmer. If you take the programmer off 9/10 times it will have the connections on the back.
 
never done central heating wiring buddy

I would assume its l,n,e and a sl for hw and a sl for heating

ease up fella- i seeked quick advise on a forum.................

I'm not your buddy!

Never assume, work with facts.

The wiring diagrams for all standard arrangements are in a sticky thread in the central heating section of the forum.

If you don't know know basic heating controls wiring then get someone to teach you. Are you still in touch with your mentor from when you were an apprentice? mine is my first port of call if I come up against something I don't know.
 
Probably will be, but without knowing the details of the system it's impossible to say from looking at the front of it.
The only possible issue I can see is if the system is Gravity dhw and the new programmer doesn't have that option.

Best bet is to get an electrician to do the swap, any electrician should be able to deal with this, if they can't I'd be a bit worried!

The ST9400c can be set to mini programmer setting for gravity systems. You have to enter installer mode and change parameter number 7 from 0 to 1.
 
I'm not your buddy!

Never assume, work with facts.

The wiring diagrams for all standard arrangements are in a sticky thread in the central heating section of the forum.

If you don't know know basic heating controls wiring then get someone to teach you. Are you still in touch with your mentor from when you were an apprentice? mine is my first port of call if I come up against something I don't know.
thought your mentor retired when the 5th edition came out.:38:
 
mymistake. thought you were older, driving that tractor in your avatar.round.
 

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