Vaillant EcoTEC pro24 not switching off all night

[petetech]

We have just had a Vaillant EcoTEC pro 24 combi boiler fitted. After the timer has switched off for the night at 23.00hrs, the boiler continues to run for approximately 1min. at 10min. intervals for the entire night until the timer switches the heating on again at 07.00hrs. It does not seem to do this in the daytime when the heating goes off.

Does anyone know why this is and can we control it by changing any settings please?

Many thanks in advance.

Pete

 

[hamish72]

frost protection should do that if the temp drops to 3 degrees

and pump anti seize if not run for 24 hours

dont think you can change settings get the installer to sort

 

[smoggs03]

i think its hot water pre heat, read your hand book i'm sure you just turn dial fully on then fully off to switch off this function but like i say refer to handbook

 

[petetech]

i think its hot water pre heat, read your hand book i'm sure you just turn dial fully on then fully off to switch off this function but like i say refer to handbook

Thanks. I've switched this off and it seems to have sorted the problem.

Regards,

Pete.