I have an Intergas Rapid 32 boiler which was installed less than 10 months ago, all new pipework installed at the same time. I have 2 zones, both controlled by Google Nest thermostats.
The CH worked fine during the last winter, I stopped using it around May. However I just started re-using it to find out that all the radiators are lukewarm, even after leaving the boiler running for several hours.
As you can see from the photo below, the boiler is correctly calling for central heating (code 5) and water pressure is 1.5 bar, however the flow CH pipe is not that hot, only around 26 degrees (note that the central heating water is set to 80 degrees in the boiler's settings).
I noticed 2 things:
1) The boiler does not make much noise when calling for CH
2) If I slightly unscrew the syphon cup, water drops constantly -> is this normal for water to discharge constantly when the boiler is calling for CH?
Things useful to know:
- The DHW always worked fine.
- The condensate hose is not blocked (I made it drained into a bucket temporarily)
- I think a blockage is very unlikely since I have 2 different zones and also have a bypass valve (I would expect the return CH pipe to be much hotter)
- Sometimes the boiler makes a "click" noise, like when something goes too hot and dilate
As the boiler is under warranty, I will call Intergas once they re-open after the bank holiday weekend. In the mean time I was wondering if anyone could give me some tips on how to troubleshoot the issue.
I followed the troubleshooting steps from section 10.2.6 of the manual and increased the pump speed to 90 and the "Starting speed CH" setting to 70, it seems to have helped a bit but the boiler goes quiet again after a minute.
I am leaning towards a pump or condensation issue, what do you think?
Thanks!
PS: the boiler manual is available from https://www.intergasheating.co.uk/a...stallation-manual-Intergas-Rapid-88923805.pdf
The CH worked fine during the last winter, I stopped using it around May. However I just started re-using it to find out that all the radiators are lukewarm, even after leaving the boiler running for several hours.
As you can see from the photo below, the boiler is correctly calling for central heating (code 5) and water pressure is 1.5 bar, however the flow CH pipe is not that hot, only around 26 degrees (note that the central heating water is set to 80 degrees in the boiler's settings).
I noticed 2 things:
1) The boiler does not make much noise when calling for CH
2) If I slightly unscrew the syphon cup, water drops constantly -> is this normal for water to discharge constantly when the boiler is calling for CH?
Things useful to know:
- The DHW always worked fine.
- The condensate hose is not blocked (I made it drained into a bucket temporarily)
- I think a blockage is very unlikely since I have 2 different zones and also have a bypass valve (I would expect the return CH pipe to be much hotter)
- Sometimes the boiler makes a "click" noise, like when something goes too hot and dilate
As the boiler is under warranty, I will call Intergas once they re-open after the bank holiday weekend. In the mean time I was wondering if anyone could give me some tips on how to troubleshoot the issue.
I followed the troubleshooting steps from section 10.2.6 of the manual and increased the pump speed to 90 and the "Starting speed CH" setting to 70, it seems to have helped a bit but the boiler goes quiet again after a minute.
I am leaning towards a pump or condensation issue, what do you think?
Thanks!
PS: the boiler manual is available from https://www.intergasheating.co.uk/a...stallation-manual-Intergas-Rapid-88923805.pdf