Recent content by hogy

Thanks for your sensible and intelegent reply. I forgot how popular such a control method has become. I will call back the installer to check combustion but it does sound very like a speed resonance of the inner pannel so I will also try damping the pannel. It is difficult to demonstrate...

what do you think controls the fan motor? As a fan is speed controled by progressively changing conduction angle (using an integrated thyristor) a veriety of harmonics are produced. I was considering whether I was experiencing a resonance to a harmonic so produced. I accept the sugestion that...

I have a baxi duotec 28 installed about 16 months. For the last 4 or 5 months it has sometimes had a loud vibration for varying periods. I believe it to be a resonance of the inner cover according to thyristor firing angle. It lasts for about 5 mins sometime after morning start up and then...