Help with Boiler issue

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23 Feb 2018
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I have a promax he plus combi boiler which has recently developed a fault where the heating and hot water stays on and even though the thermostat and timer are programmed to be off. This happened last week and turning off the boiler for a few hours rectified the problem however its happened again today and turning the boiler off hasn't solved it.

the boiler (heating/water) is on timer to come on morning and night. however it is still running when the timer program is not on. the radiators are red hot (when the timers off) and it is running even if no water is being used

any ideas
 
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Joined
28 Oct 2005
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Reasonably sure from the symptoms you describe. Cost to repair? £150-400 depending on a number of variables
 
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