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Friedrich MW36C3F Flame Sensor
A flame sensor is only used on furnaces that burn gas and is one that will consistently detect the appropriate flame in accordance with the initial ignition sequence. As with any other safety sensor, if the flame sensor senses a problem the furnace cannot start again until the problem is remedied and the system is reset.
Clues your safety flame sensor will die soon
- The propane or natural gas has difficulty trying to ignite and closes the gas valve
- Your furnace is unwilling to work no matter what
- The entire heating system will sort of operate infrequently when it wants to
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