chrishutt said:Sludged up secondary heat exchanger? It's quite easy to disconnect HW heat exchanger to have a look inside.
chrishutt said:You wouldn't expect to find much sludge in a system less then 5 years old, but it does depend very much on the quality of the installation. For example if the system was not flushed out properly there could be fairly rapid corrosion as a result of soldering fluxes.
chrishutt said:It's quite easy to disconnect HW heat exchanger to have a look inside.
chrishutt said:There are other possible causes of poor HW performance, but you need to look at the manual and the various status, diagnostic and fault codes to understand what's happening. Check the HW temperature at the boiler outlet pipe as well as at the taps - the problem might be external to the boiler..
ChrisR said:Also the diverter valves on those often leak very soon from new. Turn HW on, and see if Ch flow pipe(furthest left) gets hotter..
Dramatic and immediate.(how much temp diff and how quickly?
No, the lack of it. It's oxide of radiator.black coating on top inlet/oulet ( x100 inhibitor ? )
ChrisR said:Temp sensor(s). ......
ChrisR said:Temp sensor(s).
Also check at meter that it's using the right amount of gas. A corgi could check what the gas valve is doing, & the temp /flow of the water.
New one here is 2050 at room/finger temp and 400 at 90 ish.How many ohms at what temp is ok ?
ollski said:Why not use the diagnostic mode on the boiler, it will tell you which component is faulty. I would use it to check the air pressure switch isn't dropping out in the middle of a hot water demand. If you don't have instructions I can talk you through.
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