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Friedrich VHA09K Flame Sensor
A flame sensor is a safety device that will dependably sense the correct flame during ignition. Because of the safety issues involved, when the sensor is triggered by an event the furnace will not start until the problem is dealt with.
Red flags the primary flame sensor is dead
- Your gas furnace cannot supply heat and spits out an error code on the main board
- The heating system operates on certain occasions only after the second full moon of the month on a Tuesday
- Any type of gas that has entered the furnace has problems trying to ignite and the system throws an error code
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