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Carrier 38TKB030 Flame Sensor
The flame sensor is a safety feature that will dependably sense the correct flame when the system starts. As with most devices used for safety reason, if the sensor goes off the system will halt until that particular problem is fixed.
Simple indications to watch for in a bad primary flame sensor
- The propane or natural gas cannot properly ignite and the control shows an error
- The unit will work rarely at midnight, but only after the new moon following the fourth Monday of the month
- The gas furnace cannot produce heat when you crank the thermostat up
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