My oil boiler has been firing for 2hrs now. the timer is off, the thermostats are low.what could be the problem?

sophie, November 2008

Hi do you know the make or type of oil boiler that you have?

rob, November 2008

Does it have a frost 'stat? If so it will override any programmer setting because it is trying to prevent your system from freezing. Check its setting 2-3 oC. How cold is it where you are?
If everything checks out ok, then start suspecting a jammed switch in the programmer

Cledlyn, November 2008