Radiators firing up when hot water is turning on

[SzA]

Hi,

I've had this issue for a while now, the heating and hot water have seperate schedule but when the boiler turns on for hot water, the radiators also fire up even though the heating displays off and the history shows no record, and radiators stay hot until the hot water timer turns off, this is making the house boil, I've reset it many times but the issue keeps coming back.. Would appreciate if someone knows a solution.. 

[DragosC]

Hi there @SzA,

Thanks for reaching out. Could you tell me please what type of heating system do you have? Is it a Y-plan system boiler with a "Y" shaped valve for both heating and hot water, or is it an S-plan with separate valves for heating and hot water? 

[SzA]

Where can I check that? I have a potterton boiler with a hot water tank.

[DragosC]

You can take a look at the valves next to the boiler. Perhaps you could send me a picture of it? 

[SzA]

 

[SzA]

---

@DragosC wrote:

You can take a look at the valves next to the boiler. Perhaps you could send me a picture of it? 

---

 

[DragosC]

Thank you. However, this doesn't seem like a picture of the valve. A motorized valve should have something like a small box above it which opens it and closes it with the command from the Heat Link. 

[SzA]

Then I've got this next to the water tank upstairs 

 

[SzA]

 

[DragosC]

Got it. Thank you. That seems to be a motorized valve indeed. Do you have one next to the boiler as well? 

[SzA]

No it's just this that I sent earlier, is there a fix? Really appreciate your help

 

[DragosC]

No worries. We'll get there as well. Could you tell me please what are your Home/Away assist settings? Please send me some screenshots from there. 

[SzA]

I have set the away setting off

[SzA]

 

[DragosC]

Thank you. Could you please turn off the True Radiant? 

[SzA]

Done.. 

[SzA]

No it's still the same issue, just turned hot water on and the radiators are hot again..

[DragosC]

Got it. Could you tell me please if you can hear a click from the Heat Link when calling for heat and turning it off from the app? 

[SzA]

Yes that click sound happens whenever the heating turns on as per the schedule, also when it turns off either automatically or manually through the app  Currently I have the heat mode on off but when the hot water is turned on the radiators go hot as well..

[DragosC]

In this case, if the Heat Mode is off and the hot water turns the heating on as well, it might be related to a stuck motorized valve which operates them both. Anyway, you'll need a boiler engineer on the spot that will need to contact us for troubleshooting and continuity test on the Heat Link with a multi meter. 

[SzA]

Is there a way to contact someone via a telephone number? That would be a lot quicker..

[DragosC]

Sure. Here are the contact information for the live support team: Thermostats: +44(0) 808 169 2307 - Available 0800 - 1900 GMT Monday to Friday and 0900 - 1700 Saturday and Sunday

[SzA]

Thanks

[DragosC]

You're most welcome. I'll have to close this thread. Should anything else come up, please open another thread and we'll take it from there. Have a good one and stay safe!