Ecotec Boiler Firing Up the Heating

[tobias123]

Hi

I have an ecotec 831 combi 24kw hooked up to a honeywell wireless thermostat.

Seems that the heating kicks in even when I have set it not to, making the house constantly warm and wasting the heating bill.

Theres 10 rads in our 4 bed house.

Ive set the heating to 60 degrees and water is working fine.

Radiator symbol flashes and the up arrow in the small circle is also on from time to time. Seems to be anticycling.

I saw that changing the D0 setting could be the answer (it's set to 24) but don't know what I should change it to.

Could it also be a miscommunication between the wireless thermostat and the boiler?!

Anyone have any tips to get this to behave?

Much appreciated

 

[Dan Robinson]

I have an ecotec 831 combi 24kw

 

[tobias123]

???

I am not sure what you mean here...Vaillant ecotec plus 831

 

[hertsboilers]

Newly installed? Call an engineer to check wiring.

 

[tobias123]

It was here when we moved in. The wireless thermostat is new. I have tested that and all appears to be reading correctly.

Simply a case of the boiler switching the heating on when the demand isn't there...

Should I try anything else?

 

[hertsboilers]

The problem is that you as a DIY shouldn't open this boiler case.

So ask the coming engineer about 24V link, he will know what I meant. Good luck for you.

 

[tobias123]

Thanks @hertsboilers

I called Vaillant who were also mystified when I talked them through the situation and checked settings such as D0 (which they said is correct to set at 18 not 24).

Perhaps a simple wiring issue so will call the engineer back.

 

[wannocks]

???

I am not sure what you mean here...Vaillant ecotec plus 831

Your previous post doesn't make sense. An 831 is 31Kw. Not 24.

 

[tobias123]

Your previous post doesn't make sense. An 831 is 31Kw. Not 24.

The bottom of the boiler states 24kw i reckon here is the label...could be wrong as I'm not an expert

 

[AGAS]

Ive set the heating to 60 degrees and water is working fine.

why have you set that at 60 degrees , whats your logic ?

 

[jeff the gasman]

Your previous post doesn't make sense. An 831 is 31Kw. Not 24.

Is 24KW not the maximum heating load? Not sure but is likely.

 

[GuessMan]

Is 24KW not the maximum heating load? Not sure but is likely.

Yes