Afew other thoughts Are you sure it is the hot water and not the cold. A slight change in cold supply will alternate your temp without you noticing the the flow Combi pressure as mentioned ? Is your cold water from a tank ? Does your mains water split to a tank and combi ? Does your mains water serve anyone else in say a converted  house on a split loop ? When not in operation the combi  should be between 10 and 15 but no more. Either 1 or 2 taps underneath the combi will enable you to top up. One will open the water supply and the other will top up,or just 1 valve switch to top up. Do not have it when cold under 10 and in the red or over 20 in the green

Entire Thread

Topic	Date Posted	Posted By
Boiler / Hot water help	20/12/14 12:01:00	Amanda Pye
Re:Boiler / Hot water help	20/12/14 12:40:00	Joy Griffiths
Re:Boiler / Hot water help	20/12/14 13:00:00	Andy Pease
Re:Re:Boiler / Hot water help	20/12/14 13:36:00	Viv Griffiths
Re:Re:Boiler / Hot water help	20/12/14 13:58:00	Amanda Pye
Re:Re:Re:Boiler / Hot water help	21/12/14 22:15:00	Robin Cox
Re:Boiler / Hot water help	22/12/14 08:05:00	Sean Wales
Re:Re:Boiler / Hot water help	22/12/14 12:34:00	Amanda Pye
Re:Re:Re:Boiler / Hot water help	22/12/14 12:43:00	Jeff Gear
Re:Boiler / Hot water help	22/12/14 12:40:00	Amanda Pye
Re:Re:Boiler / Hot water help	22/12/14 12:45:00	Julian Pavey

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