Ideal Logic Combi 24. Water is perfect for bathing a baby but not for shaving. | Central Heating Forum | Plumbers Forums

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Ideal Logic Combi 24. Water is perfect for bathing a baby but not for shaving.

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Discuss Ideal Logic Combi 24. Water is perfect for bathing a baby but not for shaving. in the Central Heating Forum area at Plumbers Forums

J

Joeberg1

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Good Evening from sunny Clevedon. Heat Exchange was changed 1 year and 13 days ago. I fitted a new no flow thermister, which I was told would be the main suspect but has made no difference.
Any advice ? I have a big pan on the boil all the time for shaving and doing the washing up but I rather nice hot water came out the taps.

Cheers
 
Have you tried slowing the flow of water out of the hot tap eg only open it 1/3
 
Can you measure the flow rate out of said tap

Is it the same for all taps or just this one ?
 
Or time how long it takes to fill a 1l bottle etc
 
I've had issues with these but never this time of the year ? as stated above your combi will only add 35°c to the incoming water temperature so say its 12°c then you will get hot water at 47 °c at 9 litres ish a minute the only way to achieve a higher temperature is to slow the passage of water through the plate heat exchanger but this also decreases the flow rate, it maybe your plate heat exchanger needs cleaning? Kop
 
king of pipes said:
With please just want to see which model you have
Click to expand...
20210923_180601.jpg

king of pipes said:
With please just want to see which model you have
Click to expand...
It's the 24 according to the manual
 
Was the main heat exchanger changed ?? Or the hot water plate heat exchanger ?? The big aluminium part is the main one as below arrowed in blue , the stainless steel heat X is the silver component tucked behind arrowed in red this is the part that heat your water and can become partially blocked and the water temperature drops off ? this is the exact same one as yours . Kop
 

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It was only flowing 7.8LPM at 24C which is only about 6C above the present cold water temp, about 3.3kw, will a combi fire constantly at this very low output?. maybe some problem with temp control assuming its turned up fully.
 
The logics also suffer with flow turbine problems they sometimes stick and get grubby if you can't get enough flow through it the boiler it will only run at a reduced rate you really need a Gsi who knows his way round a ideal Logic . Kop
 
Under normal conditions with the temperature control set to maximum of 60C then even this restriced flow of 7.8 LPM will require 22.8kw (from cold at 18C) so maybe other problem(s) as well.
 

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