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International Comfort Products PHAD36N1K1 Flame Sensor
A flame sensor can only be found on furnaces that burn a gas. It is a safety sensor that can reliably detect the correct flame when the system starts. As you would probably could have guessed, when the flame sensor gets triggered by something everything stops for as long as the problem remains.
Red flags your safety flame sensor has little life left
- The whole system runs intermittently at the stroke of midnight after the second full moon following the second Sunday of the month
- The furnace is unwilling to start and will shut everything down
- The propane or natural gas will not even try to begin igniting no matter what you do
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