Conventional Gas Boiler firing all the time.

[markyb2]

I have a old Olympic / Thorn EMI conventional gas boiler that has been working ok but over the last few months I have noticed that it fires very frequently, as often as once every 10 - 15 minutes, all day and night, when it shouldn't be doing anything (i.e. central heating / hot water timer is OFF). Could this be a thermostat problem? It did not do this before. The gas bill came through recently and it was ridiculously high and I am getting very concerned - hope someone has an idea what causes this.

 

[stevetheplumber]

you need an engineer to check if its a boiler or controls fault all gas bills are ridiculously high now days

 

[markyb2]

Cheers for fast response - is there anything I can do in the meantime? I know gas prices are crazily high but 3x last years equivalent quarterly bill is pushing it even for British Gas!

 

[jtsplumbing]

Looks like your going to have to replace boiler ! very few parts avail, boiler getting demand call, could be external controls or pcb, other than turning it off you need to call in GSR to look at it.

 

[heliotrope]

Probably not a boiler fault at all.

More likely to be control problem, motorised valve or programmer for example.

Best to get somone in to sort it out. What you save in gas over a period could
pay for the call.

 

[joe brown]

its your eco button, its just kicking in to eco mode... it keeps the water hot !! wouldnt woirry just switch eco mode off

 

[jtsplumbing]

Hi Joe chaps talking about an old Thorn boiler prob 30 years old, No eco mode on these old boilers.

 

[markyb2]

Certainly nothing to do with an eco-button, as the last post pointed out, this boiler is ancient!

 

[stevetheplumber]

Certainly nothing to do with an eco-button, as the last post pointed out, this boiler is ancient!

not that ancient ive fitted loads

 

[jtsplumbing]

Hi Steve, not that old ? when was the last time you fitted a Thorn Boiler ??