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You could have a bad thermostat,a short in the stat wiring or a faulty control
it's my sister's heating system
should she call local hvac?
it's used 50gal of oil in3 days
If you can't troubleshoot this then she should call in a pro
how do you tell if it a bad thermostat? It only recently started to do it.
disconnect the wires from the thermostat, if the burner stops then it's the stat
what's your question
will the heat just turn off if the wires are disconnected?
IF the thermostat is the problem. I am assuming you mean the burner is running when you say the heat is running. You said this is a gravity system so the burner is the only moving part.
if the burner doesn't stop when you disconnect the thermostat then you could have a short in the thermostat wiring or a bad control
ok thank you
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