Boiler boiling

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Apr 8, 2021
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My Worcester camray utility 12/18 boils and the thermostat does not trigger but it seems the oveheat thermo switches it off after a minute of boiling. I have fitted a new thermostat and changed the system circulation pump but it still boils, any ideas?
 
Joined
Apr 8, 2021
Messages
2
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1
Country
United Kingdom
Fixed it, took the burner out and found one of the two tube blanking plates hanging down into the burner chamber. Item 10 on the Worcester diagram for the primary heat exchange. I pushed it back up into its channel and slid it forward and it seems to have locked in place. Reassembled and it is firing up and controlling like it should do
Hope this may help someone else.
 
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