Ariston combi hot water problem

[Gasguru]

Forget limescale...highly unlikely.

It's the primary side that's prone to blocking....tends to be flakes blocking up the left hand port or a thin layer of sludge throughout the plate surfaces. Easy to measure differential temperatures across it to determine whether this is the actual fault.

Sensors often fail by going open circuit at a particular temperature. Once this happens burner may extinguish...sensor cools and burner re-ignites.

Just keep calling BG...record for one of my customers is 29 visits

 

[steve1000]

Thanks for your advice it is very much appreciated. so just to confirm even with kitchen hot tap for example on full burner should stay lit.
i understand that i will lose temperature the faster the water is flowing, but want to confirm the main point is burner should stay lit and not keep cutting out.
thanks once again
steve

 

[mickyg]

The higher the flow the higher the burner
keep calling, maybe they'll fly in from the sky this time

 

[steve1000]

Hi

I know its been a while but just wanted to put on here what the conclusion was in case it helps someone else.
We got british gas back out and a different engineer turned up, he confirmed that it was not right and that he thought it was a problem with the secondary heat exchanger. He then returned two days later and replaced it, and now everything is great.

Many thanks for everyones help and advice.

Steve