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Yes, pump never stops. Diaphram pin retracting and working fine. boiler does not seem to be cycling. hot water working fine on demand. Thanks for replys.

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

Many thanks. Didn't want to take apart without replacement as bottom R/H screw is near-on impossible to get at. Allready checked saddle switch and boiler fires. So I'll take your advice and strip it down, I had a Giannoni diaphram on van, but valve looked smaller (I Know Spec-savers...

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.

Many thanks for help and explanation on shunting. I'm of to wreck an LS80! :D

O.K. I submit. It's a diverter. Can you help me with diaphragm repair kit, or do I need new shunter?

I just knew you'd come back with DIVERTER!! !!!!

Well if you speak to the spares dept at Ravenheat you'll find it's a three way valve.

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!!!!