Boiler making humming noise.

[fitzykev]

Hi all. Gas boiler from time to time makes a humming noise when it kicks in to heat the house. If I turn on hot tap for 10 seconds then off the heating kicks in and the noise stops. It is a glow worm 28c boiler. Has anyone experienced this?

 

[Madrab]

Chances are it's just the pump spinning up and proving, some boilers will take a minute of two of the pump running before they then initilise the fan and then light. once running you won't hear the pump over the fan etc.

 

[DP]

Perhaps the boiler is happy, hence it hums. Would be nice if it could sing

 

[fitzykev]

When it starts it won't stop at all unless I switch the boiler off and on or turn the hot water on. As I said tho it's does not happen all the time

 

[MintyBiscuit]

Hi FitzyKev - sorry only 5 years after your post. I am getting the same issue with my glowom combi. Electrical humming noise when it kicks in from time to time. Stops if I switch it off at the circuit board. Did you get to the bottom of the problem?