Vaillant eco tec plus 831

[Chris w]

hi any ideas would be greatly received

leave stat set on timer - when boiler comes on rads only Luke warm - turn off power to boiler then turn back on again rads get hot - showering and washing up makes no difference rads stay hot.

When timer comes back on same thing -when boiler comes on rads only Luke warm - turn off power to boiler then turn back on again rads get hot - showering and washing up makes no difference rads stay hot.

Also left boiler turned off for 4 hours with no power yesterday - no difference.

 

[sammathias]

What timer do you have? Built in?

 

[Chris w]

What timer do you have? Built in?

Hi it’s Wired timer (new fitted just in case wireless one was causing issue) which it wasn’t.

 

[Chris w]

Hi it’s Wired timer (new fitted just in case wireless one was causing issue) which it wasn’t.

 

[Chris w]

View attachment 35753

Hi also fitter fitted heating thermistor sensor assemblies at the same time but made no difference.

 

[chris watkins]

If rads (heating) are still on when you are running the hot water then it is diverter letting by.

Heating engineer required.
What area are you in?

 

[Chris w]

If rads (heating) are still on when you are running the hot water then it is diverter letting by.

Heating engineer required.
What area are you in?

Hi thank you CT5 Kent

 

[chris watkins]

Whitstable is too far for us am afraid.

 

[Chris w]

No problem - have you a rough idea of what it should cost please