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Whirlpool ATR0742SPP0 Flame Sensor
A flame sensor is a safety device that can sense the flame when igniting the system. Due to the overall safety issue, if the flame sensor is triggered the furnace will not start until the problem is fixed.
Some warnings your safety flame sensor has very little life left
- The LP or natural gas refuses to try to properly ignite no matter what
- The heat system is unwilling to supply heat and will shut everything down
- The furnace runs occasionally when it thinks it should
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