Valiant Ecotec 831 combi heating turns on random

Joined
24 Jan 2006
Messages
149
Reaction score
0
Location
Cardiff
Country
United Kingdom
Got the Ecotec combi 831 and lately I have started to hear the heating kick in even though temp is set to 19C and its reading 23C!
Anyone come across this?

Wondering if the Honeywell thermostat/programmer is faulty or could it be a faulty sensor on boiler? Recall reading boiling has a low temp sensor to kick the heating on and wondered if that was faulty.
 
Sponsored Links
Joined
24 Jan 2006
Messages
149
Reaction score
0
Location
Cardiff
Country
United Kingdom
Yes it's turned on. I've just turned it off to see if that improves.

Do you think that could be impacting? Surely that's on the hot water circuit rather than the heating circuit?
 
Joined
28 Oct 2005
Messages
13,571
Reaction score
3,207
Location
Daventry
Country
United Kingdom
It is on the hot water circuit, but if the diverter valve is stuck partly open it'll heat up the radiators. Run a hot tap and put your hand on the heating flow off the boiler. Does it get warm?
 
Joined
20 Mar 2009
Messages
8,979
Reaction score
1,757
Location
Potters Bar
Country
United Kingdom
Can you select "off" for the heating, rather than just relying on a low stat temp acting as an analogue "off"?
When you say you can hear the heating "kick in", do you mean you can hear the boiler fire without a tap running? If so, a smuggled said, this could be the preheat which is for the HW but the diverter is letting by to the CH circuit. Running a hot tap and feeling the rad nearest the boiler will help test for this.
 
Joined
24 Jan 2006
Messages
149
Reaction score
0
Location
Cardiff
Country
United Kingdom
Cheers both looks like the central heating pipe starts to get warm when I run the hot water so I suspect the divert valve
 
Sponsored Links

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.


Are you a trade or supplier? You can create your listing free at DIYnot Local

 
Top