Boiler thoughts please

[king of pipes]

All looks good put stat up to 30 degrees see if the boiler fires for heating ?, there is a time delay but no not 45 minutes 1-2-3 at most , could be a service call you must have a mate local who can help you out . Kop

 

[WaterTight]

So the heating just turned on by itself, seconds after stopping using the hot water again.

I'll get someone in to look at it and service.

Can you tell me what the hot water/heating lights staying on and going off mean though? Why had the hot water light stayed on for ages after last using hot water and now goes off as the heating decides to finally come on?

Do they stay on for as long as the water in the DHW / CH circuit run is within a good temp range or something?

 

[WaterTight]

When I say heating came on by itself I mean the stat had been left at high for a while and then it fired up a good while later. I just tried turning stat down and up a few times and heating goes off / boiler fires up, goes off, as expected

 

[ShaunCorbs]

Could be the hot water sensor is sticking so not going back in and holding etc

 

[WaterTight]

Interesting. Should the hot water light go off within say a couple of mins of no demand for hot water?

 

[ShaunCorbs]

Yea unless you have a leak

Should be instant if you have pre heat off

 

[king of pipes]

Could be a sensor fault but hard to tell without being in front of it. Kop

 

[king of pipes]

The Green lights will come on to tell you if the boiler is in heating mode or hot water mode the orange flame symbol tells you that the boiler has fired up , there is normally up to a 3 minute delay on switching between heating and hot water modes dependant on the boiler temperature, no pre heat on this particular model so you can disregard that to me it's working ok may need a bit of tlc but definitely not terminal . Kop

 

[WaterTight]

Thanks all. Very helpful.

 

[WaterTight]

Pretty much bomb proof bud unless it's been abused get it serviced properly a full strip down heat exchanger and spark electrode and rectifacation probe changed expandion vessel checked and repressuried and you should be good to go , flue joint needs sorting really . Cheers kop

Finally hoping to now get round to getting the above done (or at least have it serviced and see what is suggested.)

If it is agreed that it needs a good overhaul which a bunch of bits done like detailed above can someone give me a very rough idea of cost? Are we talking £200? £500? £1000? Or is it impossible to say. South East.