Oil burner controller system

My furnace doesn't seem to start when the thermostat calls for it to start. Sometimes it does, sometimes it doesn't. When I place a meter across the thermostat terminals (T to T) on the controller (Honeywell R8184G1286) the Beckett AF burner starts and runs for several cycles...perhaps a week's worth but then won't start until I touch my meter probes to the T-T terminals the next time.
Any thoughts would be appreciated.
Boden
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I had exactly that problem a few weeks ago. After FOUR trips out by the HVAC company, replacing the controller (in the furnace) solved it.
At first they replaced a flame sensor, then rewired the power vent, but these did not solve the problem until they replaced the controller.
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Boden wrote:

Sure sounds like you should call whoever services it for you. I'm hoping you know also that oil burners do need annual service/tuning.
Among other things. That's where I'd start.
John
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