My oil boiler has been giving me headaches lately. I have 3 zones plus hot
water. All 4 are working properly in terms of the thermostat and zone
valves. Once the boiler reaches 190 degrees, it shuts off. It allows
itself to drop in temperature and will not restart to get to the 190
degrees again. I have to manually reset it by hitting the reset button.
And then the process repeats. If I lower the thermostats to where the
house is not calling for heat, then the boiler just allows itself to drop
and become cold. then, I need to hit the reset button again. who's got
some ideas what to do next? again, thermostats and zone valves are
functioning just fine.

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