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Boiler only turns off with the system fuse

Postby scampthefirst » Tue Mar 30, 2010 1:45 pm

I have a Triancogas wall mounted boiler that will only switch off with the system fuse, I have changed the timer switch, checked that the room stat is working, nothing is different. I have vague recollections of changing the thermostat in the boiler at a previous address (about 30 years ago) could this be the same problem?
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Simply Build It

Postby htg engineer » Tue Mar 30, 2010 7:10 pm

Motorised valve / actuator ?

Does the system have one ?

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