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 randomly for about 5 seconds ( as fan speed sweeps through). When on its long morning run it can be stopped instantly by turning off at the thermostat.
Has anybody any ideas? I am going to try a bit of rubber foam between the two covers to see if that damps out any resonance.
Hogy
Has anybody any ideas? I am going to try a bit of rubber foam between the two covers to see if that damps out any resonance.
Hogy