DIY Doctor

New boiler setup - hot and cold water cycles repeatedly

Postby JT_Singh » Fri Jul 31, 2020 12:04 pm

Hello - I recently got a new Worcester Greenstar 30i 30kW Combi Boiler 7733600005 installed in my property. Previously I had a 37KW combi boiler but that was 10 years old. But my plumber said that 30KW combi boiler should be more than enoguh. The day this was installed, I also had my water supply pipe changed from 15mm to 25mm PE to increase the water flow. Since the day these two things were done, my hot water cycles continuously between extremely hot and freezing cold in all the tap mixers. I am not sure what's gone wrong as the plumber who fixed it confirms that this has nothing to do with the boiler. Any pointes / advise based on your experience will help.
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Postby stoneyboy » Fri Jul 31, 2020 9:42 pm

Hi jt_singh
It's an issue with you boiler or its installation if you can't get the installer to sort it get in touch with Worcester direct.
Regards S
stoneyboy
Rank: Project Manager
Posts: 3850
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Postby stoneyboy » Fri Jul 31, 2020 9:42 pm

Hi jt_singh
It's an issue with you boiler or its installation if you can't get the installer to sort it get in touch with Worcester direct.
Regards S
stoneyboy
Rank: Project Manager
Posts: 3850
Joined: Wed Dec 10, 2008 6:44 pm



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