Gurgling noise in a radiator after hot tap is off

[vitor710]

Hi, I have a Worcester Combi Compact Boiler recently fitted.

One radiator made a gurgling noise on the inlet side after I used and turned off a hot water tap.

I tried to bleed it and only water came out, but I did found that sometimes the towel rack in the bathroom (Not the same radiator) contains a small amount of gas

Is anyone having any idea about this?

Would it be a malfunctioning diverter valve causing this issue?

Should I call Bosch to check it out?

Attached a video. The sound took place at around 0:07 in the video.

Thanks in advance.

 

[cross thread]

After use your boiler will have a pump overrun to cool it ,so some movement of water is going to happen.

 

[vitor710]

Thanks. So does it mean some air is trapped in the system?