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Hi, pump runs constantly in Hot Water mode. Works fine when tap opened. any ideas please.

Hi, Can anyone inform me were I can get a Diaphram for a Ravenheat White Star LS 100.. I've been informed I need the valve. This is not the 8 screw Gianoni type that I've come across before, but a smaller 4 screw type. Still a pig to get at.

Hi, Has anyone come across a Ravenheat LS80 Diaphragm repair kit, or is it a new shunter valve needed (As Ravenheat has informed me!!) Please help. Has anyone come across a LS80 before??? Apparently its only 4yrs old. I'm sure it's just diaphragm, but haven't removed valve yet! Thanks in...

Hi I've removed plate H E and need to know what chemicals to clean it with. It is not totally blocked. Thanks in advance.

Heating okay. No hot water, boiler fires and cycles, heating F & R pipes remain cold, water pressure ok. Is problem secondary exchanger or diverter? How does one test!!!!