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Central Heating

Timer switching on but boiler not firing up

Anonymous user 14/03/2024 - 2.33 PM

Our boiler has started to fail firing up on the evening timed hot water cycle. Also, when I press the 'advance' button to kick start it, nothing happens. I have to switch the heating on (which we don't currently have on at the moment due to the summer) and this seems to trigger the boiler off to heat the water. Is this a problem with the controls or with the boiler? Our boiler is a British Gas 450 RD2 and the controls are Drayton LP112. I'd say the boiler was installed around 2003 and was last serviced approx March 2013. we regularly need to change the thermistor harness but I think this probably a separate issue to that. Thanks

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2 Answers

kevin cassidy building contractors

Rating: 5 out of 5

Accrington

It sounds like an issue with the microswitch boiler feed inside the hot water motorised valve. Once confirmed the best route is replace the valve motor head.

Answered1 August 2014

Boiler Homecare

Rating: 5 out of 5

Honiton

I don't like giving home owners possible fault diagnostic solution's on a open forum as this may encourage them to undertake the repairs themselves, in this particular situation, as this this could lead to accidents or personal injury. I would suggest you contact your local heating engineer to investigate and make good repairs.

Answered1 August 2014