Furnace doesn't always light
Is there a good thread for troubleshooting furnace problems? Mine is not quite 3 years old and has worked fine until this week. Sometimes when the thermostat calls for heat the fan comes on but the...
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The airflow is really good - I don't think that's the problem. OTOH it could be a faulty micro-sail-switch. Or the limit switch is funky. Those are the only two things on that blue line.
