Boiler keeps coming on when not timed to since ST9100C installed

[DIY15]

Hi i recently had a Honeywell ST9100C timer installed and my boiler keeps turning the heating the when its not timed to.

the new timer was replacing a Danfoss 103
the boiler is ideal logic 30
thermostat is Honeywell T6360B

I have looked through the boiler manual and researched the internet but unsure what it could be causing the boiler to do this.

Internal Wiring - Ideal Logic Combi 35 User Manual [Page 29]
can anyone help?

 

[gmartine]

Call back the installer.

 

[DIY15]

no answer. ideally for now i need to know if it is safe to have on. as when i looked through the manual it was wired to the danfoss 103 which is mechanical timer it says it needs different wiring for an electric timer

 

[DIY15]

i just need to know if there is anything i can do. as its taken £20 since Tuesday. still no reply i am guessing he will be busy

 

[Nico]

does the time clock turn your heating on at all?

 

[DIY15]

Do you mean the timer? Iv programmed it and it comes on when it should but it also comes on when it shouldn't. Like now it' been on 3 times but the timer isn't time to come on. In fact iv turned it off.

Iv turned the radiators down and the thermostat down on the boiler, which is helping with the gas.

 

[ShaunCorbs]

move the black wire from 3 to 4 on the prog

 

[Gasmk1]

shouldnt your switch live be in number 4 wrote this earlier and forgot to post it

 

[DIY15]

Does it not matter about how the boiler is wired up to the room thermostat?

That's what I thought by reading the boiler manual

 

[ShaunCorbs]

shouldnt your switch live be in number 4 wrote this earlier and forgot to post it

correct 3 does nothing

 

[DIY15]

So the 1 live in 4?

 

[ShaunCorbs]

So the 1 live in 4?

the black wire in 3 on the prog put it in no 4 on the prog

 

[Nico]

This is why I was asking if the heating even comes as the other guys have said your switched live is in the wrong connector in timeclock

 

[Nico]

Has the thermostat loop in the connectors even been removed? Because the way that’s wired the thermostat shouldn’t be getting a feed for the thermostat to tell your boiler to run. As the switched wire is in the 3rd connector port that doesn’t do anything

Is your boiler running continuously and is only nocking off because it upto temperature?

 

[DIY15]

Ok I will try to move that wire and see what happens. Electrician still isn't answering.

The boiler seems to start up when the temperature on the boiler gos down.
So when I had it set just over economy for the week it was turning on all the time.

Iv turned it right down now and it stays off for longer

 

[DIY15]

Nico I don't know what you mean sorry.

 

[Nico]

Sounds like the wiring loop hasn’t been taking out

 

[DIY15]

Is that in the bolier?

 

[DIY15]

Is that what this means then?

 

[Nico]

Yes it’s inside the boiler and it comes already fitted from supplier and if fitting timesclocks and thermostats it needs to be removed and switch wire fitted the the input side of connectors. Would be best to get an electrian to check over everything that has been done

 

[DIY15]

I will have to get the electricIan back then. I don't have a clue about boilers.
So will the black wire still need to be moved?

 

[Nico]

Yes the black wire in the time clock needs to go to port 4 as that is your switch wire. Port 3 has no purpose so wouldn’t control anything

 

[DIY15]

Ok thank you so much for your help. Hopefully can get the guy back and explain everything to him, and it get sorted.

 

[Murdoch]

But ............ if it worked with the previous set up , surely the internal link would have been removed ...........

 

[DIY15]

He didn't go near the boiler.
As from what the manual says a mechanical timer runs differently to a programmeable timer.

 

[Nico]

Was the mechanical timer on the front of the boiler? Sorry I read the post wrong I thought this was all a new install.

 

[Nico]

See when you turn the thermostat down and hear a wee click does this turn the boiler off or does it continue running?

 

[Murdoch]

Was the mechanical timer on the front of the boiler? Sorry I read the post wrong I thought this was all a new install.

The set up had a separate controller before the change ........

 

[Nico]

Does the thermostat if turned down turn the boiler off?

 

[DIY15]

Yes but the boiler comes when it' not timed to

 

[DIY15]

Iv changed that wire now and turned the boiler tempreture up but the timer off. I will see if the bolier turns on by itself again.

It seems like the other days it have been turning itself on to get to the required temperature that was set on the boiler and not the room thermostat. Would that make sense nico?

 

[ShaunCorbs]

If it still turns it self on that means it's not wired correctly in the boiler Or where's he's messed with it

Time to get a heating engy out to wire it up

 

[Nico]

Yes but the boiler comes when it' not timed to

Would you just leave the thermostat always sitting at a set temperature?

 

[DIY15]

Yes the room thermostat is always at the same temperature.

I had to turn the temperature down on the boiler because it was coming on at night. I have changed the wire you said black from 3Rd pog to 4th pog. I turned the boiler tempreture up and so far it has not turned on.

 

[Nico]

It’s a strange one because the thermostat shouldn’t have worked the way the timeclock was wired. You will need a professional to have a look so he can test with a multimeter and see what wires are switching and trace out where the problem is.