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International Comfort Products APFM Flame Sensor
A flame sensor is a device that will dependably sense the exact flame during ignition. As with most safety features, if the flame sensor senses a problem everything comes to a halt until the main issue is remedied.
Warnings of an ailing primary flame sensor
- The furnace cannot begin operations and completely shuts down
- The entire heating system will start rarely barely
- LP or natural gas will not begin igniting and closes the gas valve
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