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Discuss Glow worm store 35 f81 code. in the Plumbing Jobs | The Job-board area at PlumbersForums.net

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Hi all
Got a problem with above boiler, fault code f81 and discharge from vent, central heating working OK.
I think it may be a faulty temp sensor causing overheating, gauge shows 55degrees.
Any thoughts very much appreciated
Cheers .
 
Hi all
Got a problem with above boiler, fault code f81 and discharge from vent, central heating working OK.
I think it may be a faulty temp sensor causing overheating, gauge shows 55degrees.
Any thoughts very much appreciated
Cheers .
I think a Gas Safe registered Engineer is the best bet. They should be able to sort that fairly easily.
 
Glowworm engineer couldnt resolve it either. They have changed heat exchanger, diverter valve. And now think the issue might be with the storage tank.

We are without working boiler for 4 weeks now. Any help would be welcomed. Glow wor engineers are completely useless.
 
Hi. Appreciate this thread is 9months old now, but was interested if there was a resolution for the F.81 error. I have the same boiler and after 3 cycles of the burner cutting in the boiler goes into error F.81. Only happens on hot water side and is consiistantly after 3 burner cycles. Boiler engineer has been and temp gagues in/out of boiler and tank all ok. Has assummed its a faulty sensor ??

appreciate any update on the original poster issue. thx
 

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