hi could any one help my valient boiler when switched on to central heating makes a high pitched noise but if you run the hot water tap it stops. it doesnt do it on heat the water only . 
valient boiler
- Thread starter amellia
- Start date
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hi its a vaillant turbomax pro 28 e high performance.
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I find some of the Vaillant names a little confusion.
If this is a permix condensing then its probably the inlet tube resonance and you need an engineer to dril the 10 mm hole in the inlet tube 100 from the fan compressor but only after checking the CO² percentage is correct with your flue gas analyser
Tony
If this is a permix condensing then its probably the inlet tube resonance and you need an engineer to dril the 10 mm hole in the inlet tube 100 from the fan compressor but only after checking the CO² percentage is correct with your flue gas analyser
Tony
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