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I have an issue with HW being drawn when all taps are turned off. This is manifested by the Stuart Turner Monsoon pump which runs on when HW is turned off at the tap. When I close off the main HW supply (green arrow), the Monsoon pump stops as required. At the same time there is still a trickle...

Hope knowledgeable people can help on this one as they have in the past. Thanks to this list I've fixed at least 2 boilers. Recently moved into a place with this oldie but goodie boiler which worked fine for HW and CH till a few days. HW is still fine - coming on/off from the Honeywell...

This has recently developed with noise being heard in every room of the apartment. Symptoms: Turn on CH and let it run - absolutely fine for hours. Then I open HW for a few seconds and shut HW off. Now this combi boiler begins to hum. When HW is turned on the noise goes away until the tap is...

This has recently developed with noise being heard in every room of the apartment. Symptoms: Turn on CH and let it run - absolutely fine for hours. Then I open HW for a few seconds and shut HW off. Now this combi boiler begins to hum. When HW is turned on the noise goes away until the tap is...