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Old 23-04-2017, 05:56 PM
Richard L Richard L is offline
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Join Date: Oct 2003
Location: England
Posts: 4,936
Default Re: How to verify that the system is opening properly

B will light iup if the system is working properly. If this is not flow detected, B will go off.

You have already tested the flow sensor, blowing through it etc. If you hear whirling sound and no display, it might be the yellow flow sensor cable got damaged.

What is the serial number of your system?
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