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International Comfort Products FBF050B12A1 Furnace Door Switch
The furnace door switch is a safety switch which stops the draft inducer and ignitor from starting so as to avoid injuries. It is crucial to have this part exchanged for a new one immediately if you can, if it is damaged so as to prevent something bad happening.
Important clues of a defective safety furnace door switch
- The safety door switch is worn
- The system will not operate whether the door is open or closed
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