Help please with a Logic+ Combi C boiler 24

[megmerillies]

Hi,
When we turn on the heating after a while the boiler starts emitting a high-pitched whistling noise. If we then run the hot tap in the kitchen for a bit it stops but comes back again within about 20mins. We have hot water and all the radiators are heating up it's just this persistent annoying noise. If possible I would like to fix it myself can anyone suggest what it might be or what to do about it. The boiler is about 4-years old. Thank you

 

[kidgreen61]

Your problem is almost certainly combustion related, you will need someone familiar with these boilers to resolve the issue, it shouldn't be expensive.

 

[ianmcd]

As @kidgreen61 correctly says, it is a combustion issue and needs someone who knows what they are doing, if only 4 years old possibly still in Warranty if you have had it serviced every year

 

[CBW]

Could it be the erp pump as found in some Vaillant’s @ianmcd @kidgreen61? Either way needs an engineer as stated and could very well be under warranty.