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Mitsubishi MUY-GE09NA Flame Sensor
A flame sensor is only used on furnaces that burn gas and is one that can reliably detect the appropriate flame during the initial ignition of the furnace. Because of the safety issues involved, if the sensor goes off the whole HVAC system will remain stopped until obstacle is corrected.
General warnings of a poorly working flame sensor
- The unit will work infrequently when it thinks it should
- Your gas furnace is unwilling to produce any heat at all
- The gas refuses to try to start an ignition sequence under any circumstance
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