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View the thread, titled "boiler fires up every 5mins for 10 seconds. programmer set to hot water auto ,only.?" which is posted in Boiler Advice Forum on UK Plumbers Forums.

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blueryann

newish install . vaillant 415 boiler .fires up every 5 mins for 10 secs, programmer is set to heating off and water on auto....cylinder stat set to 60.. can anyone comment on the problem thanks.
 
Re: boiler fires up every 5mins for 10 seconds. programmer set to hot water auto ,on

Is there an auto bypass fitted
Has this been happening for over a year ?😀
 
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Re: boiler fires up every 5mins for 10 seconds. programmer set to hot water auto ,on

Dodgy cylinder stat ?
 
Re: boiler fires up every 5mins for 10 seconds. programmer set to hot water auto ,on

Stat link not removed!
 
Re: boiler fires up every 5mins for 10 seconds. programmer set to hot water auto ,on

24v link not removed
 
Re: boiler fires up every 5mins for 10 seconds. programmer set to hot water auto ,on

Wait I take it back this is open forum.

No idea mate. Probably best to get your gas chap back
 
Re: boiler fires up every 5mins for 10 seconds. programmer set to hot water auto ,on

Is there a pre heat function on these boilers ??
 
Re: boiler fires up every 5mins for 10 seconds. programmer set to hot water auto ,on

Check for a pre heat function and turn it off.

Otherwise your need a gas man in.

Job 38.11
 
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