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Carrier 48GX042090300 Limit Switch
The limit switch is a type of sensor switch in the air handler that decides when the heated air is actually warm enough for the blower to be activated. Limit switches are built because if the air is not warm enough then you will never get hot air through the ducts.
General warnings of a weakening critical limit switch
- Your Carrier system refuses to start or will not stay running for any significant length if time
- The whole system is starting to erratically frequently
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Before buying or ordering a new Carrier 48GX042090300 replacement part do your best and double check the model number as well as make a visual inspection in order to be sure the proper replacement limit switch is being ordered. The installing of a new limit switch is a piece of cake if you energy and have the proper tools to get it done.
Feel free to download your manual for help.
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