Vaillant Turbomax Plus 824

Joined
10 Nov 2009
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Location
Avon
Country
United Kingdom
Well, winter is upon us again so it was time to fire up the CH.

Problem 1.
When the CH came on, yeah it was real toasty, then the missus had to do some washing up and relised we had no hot water.
So, after cursing and switching the boiler on and off a few times, it seemed to work fine, CH & DHW.

Problem 2.
All was ok we thought, went up to bed, turned off the CH, the green power light goes of (by the timeswitch). Woke up in the night as it was too hot, to find that the CH was still running and remaining toasty. It is turned off now as I type, but still working.

Any advice would help loads, oh, no error codes displayed.
 
It sounds as if thre diverter valve is stuck, common fault on those!

But that does not explain why your heating came on at night.

Tony
 

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