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View the thread, titled "Ferroli optimax he 18 s problem!!!" which is posted in UK Plumbers Forums on UK Plumbers Forums.

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AMG

Hi,

I am an engineer, and im having an issue with an optimax.The fault f10 flashes up...its saying in the manual that the issue is pointing to the flow sensor.

When its turned on it says f10...it sounds like its running, the pump runs for a few seconds the stops,and starts again and does the same thing, fan just sounds like its running slow then eventually it fires but it varies before shutting down..sometimes it can stay on for 2 seconds or 3 minutes...the customer recently got the P.C.B changed but it didnt work..

I just want to make sure that its the flow sensor and not something else aswell

Any ideas?
 
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