potterton puma ch on permanently

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stevesays

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Was told to disconnect frost sensor to no avail,boiler is run through a timer but cannot see this being the problem,any ideas...thanks
 
I dont think that was very good advice!

It would be much better to examine the DHW flow switch !

Tony Glazier
 
You were right,replaced dhw flow switch and microswitch and problem solved - thanks.
 

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