Hot Water not hot enough

[bunser]

my hot water comes from a combi boiler. The problem is that the hot water seems to get to a certain temparature then cools right down then hot again but not really that hot. I have turned the comfort control right up on the boiler but does not have any effect.
Any ideas please.
Thanks

The boiler is a Radiant RSF24

 

[gas4you]

Don't know this boiler, but when hot tap is on does the ch flow pipe get hot as well? If so a diverter valve problem.

 

[ChrisR]

Common problem on most combis when they need a service and adjustment, a sensor fails or a heat exchanger clogs up.

 

[bunser]

no ch pipe not getting hot when hot water on. I did notice that the water will stay hot all the time if I close the hot tap down so the flow is slower, alot slower.

 

[bunser]

no ch pipe not getting hot when hot water on. I did notice that the water will stay hot all the time if I close the hot tap down so the flow is slower, alot slower.


forgot to mention that the heat exchanger has been cleaned

 

[bunser]

thanks for the obvious "get it serviced" but i asked a question on this forum because i thought someone here would have some pointers that cause these problems and perhaps how to eliminate things.
Thanks

 

[corgiman]

thanks for the obvious "get it serviced" but i asked a question on this forum because i thought someone here would have some pointers that cause these problems and perhaps how to eliminate things.
Thanks

whats wrong with get it serviced???, it may be the cause????

sheesh no helping some people

 

[bunser]

 

[bunser]

does anyone know if the dhw sensor and ch sensor have the same characturistics, could they be swopped for test?
Thanks

 

[bunser]

I am getting a reading of 11.68 ohms from the dhw sensor
Thanks