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'f19' error report - Saunier Duval 'Thermoclassic' boiler?

Recently my boiler is failing to deliver hot water. - It is hot at first then runs cold. On examination I find the boiler is flashing red and shows the error report 'f19.' My manual says this is because ... "NTC not connected to central heating pipe." ... If I switch off then re-start the boiler it works fine but after a few days the problem reappears. - The fault is obviously intermittent.

i. What does NTC mean?
ii. Any suggestions ?

John R.
February 2013
Saunier DuvalHeating, Home Heating SystemsSaunier Boiler Hot
Good morning John,

I have the exactly the same problem with my boiler.

Did you resolve in anyway?

Thank you,
Emilio

Emilio
September 2013
Not much use posting here. Nearly 3 months and not a single response.

John R.
May 2013

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