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Carrier FF1DNA018000AAAA Limit Switch
This is important because if the air is not warm enough then you will never get hot air through the ducts. A normal limit switch contains a sensor in the heat exchanger that senses, or governs, when the air is warmed to a point to activate the main blower.
Major clues to watch for in a bad critical limit switch
- System is unable to start or run well longer than 30 seconds
- The system is beginning to behave erratically more than once
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If you decide on picking up or purchasing a new Carrier FF1DNA018000AAAA replacement part do your best and double check the model number and also make a visual comparison so that you are positive that the proper replacement limit switch is being ordered. The installing of the limit switch can be quite easy assuming you know what you are doing and have the proper tools to do it right.
Feel free to download your manual for help.
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