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International Comfort Products H9MPD100J20C1 Flame Sensor
The flame sensor is a very important part of the safety feature set that can reliably detect the acceptable flame when the system starts. For obvious reasons, if the flame sensor senses a problem the gas valve is shut off and the system halts until that particular problem is fixed.
Major symptoms your safety flame sensor needs replacing
- The propane or natural gas refuses to begin an ignition sequence and the system throws an error code
- The furnace will not fire up and spits out an error code on the main board
- The heating system will run sometimes at midnight, but only after the new moon following the fourth Monday of the month
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