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.
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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