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Desa R155B Flame Sensor
A flame sensor is a regulatory sensor that senses the proper flame while the system is starting. Because of the safety issues involved, if the sensor produces an error the entire HVAC system will stop until the main issue is remedied.
Signs of a barely functioning flame sensor
- LP or natural gas has a tough time trying to properly ignite and shuts off
- System works occasionally when it thinks it should
- Your heating system is unwilling to start when the thermostat kicks in
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