Hi there i have a gloworm 30 hxi boiler. I had the time clock, room stat and cylinder stat changed 6 months ago when i moved in. The setup before did not let you just have the hot water on. Now when both the hw and htg are on together the boiler is fine. But when i turn the room stat down to zero the boiler gives me the noise problem. It happens when the boiler fires up (green light on), makes the vibrating noise then the light goes out. I've had the boiler serviced and setup to run correctly but the noise is still happening. I've been told its to do with the flow. It also has a bypass fitted in the airing cupboard and there is one 3 port valve. Any ideas on a solution?
Gloworm 30 hxi boiler noise
- Thread starter guychopper
- Start date
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I have a problem because I dont know if its always been like this or is a sudden fault.
If its a 3-port valve then no bypass is needed.
It sounds as if the flow is poor when HW is being taken. Perhaps there is some valve which is not fully open.
Its virtually impossible for us to diagnose your fault without full knowledge of the entire situation and doing simple tests. For all I know it might never have been properly installed in the beginning. Easy to see on site but impossible on the internet.
Tony
Edit, he says its find on CH and HW and the problem is on HW only Paul.
If its a 3-port valve then no bypass is needed.
It sounds as if the flow is poor when HW is being taken. Perhaps there is some valve which is not fully open.
Its virtually impossible for us to diagnose your fault without full knowledge of the entire situation and doing simple tests. For all I know it might never have been properly installed in the beginning. Easy to see on site but impossible on the internet.
Tony
Edit, he says its find on CH and HW and the problem is on HW only Paul.
did the service engineer remove & clean the condensate siphon during servicing as they are supposed to ? They get blocked very easily on this model.
If not the boiler itself can make a loud noise when lit due to combustion chamber having water inside...
If not the boiler itself can make a loud noise when lit due to combustion chamber having water inside...
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