Question about Heating & Cooling
FLASHING FLAME SENSOR CODE, HAS NEW BOARD AND SENSOR ON IT.
A flame sensor simply "senses" a DC rectified signal from the AC spark being passed through a flame(the pilot) thus proving a pilot flame exists via "flame rectification" and its just microamps as the fire isnt a good conductor, but it will conduct enough for this use, try wiring some 105 degree celcius wire from the pilot assembly to the ground or sense on the ignition module, flame sensors do not go bad or wear out, they get dirty, but that is never the issue from my experience, sensing the DC via
ground or ground rod/sensor is easily disrupted by corosion even moisture.There are flame simulators to test with as well.
Posted on Oct 31, 2012
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Posted on Jan 02, 2017
dirty flame sensor try cleaning it or there is air in the line
Posted on Jan 02, 2010
Testimonial: "Thank you very much, my heater is working again."
Hello, it sounds like your Furnace might be shutting off due to your high limit switch.A limit switch will open when the furnace overheats due to low airflow, . check air filter, clean blower wheel, and check to make sure the blower wheel is running at proper speed and not dragging sometimes cause by a weak capacitor. Anything that restricts airflow will cause a limit switch to open.
Posted on Mar 08, 2011
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