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Carrier 38YZA042 Limit Switch
The limit switch contains a sensor in the heating area that makes the determination when the air is actually warm enough so that it may be pushed through the ducts and out the vents. Limit switches were created because if the air never warms up the you will lose heat in the ducts and the vents will just blow cool air.
How can I tell if my critical limit switch has to be replaced?
- Your system is beginning to go through the startup sequence but stops quickly from time to time
- The heating and AC system refuses to start or run well for any significant length if time
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If you decide on picking up or purchasing, do your due diligence and cross-check the model number as well as make a visual inspection in order to be sure the correct replacement limit switch is being ordered. You do not need to replace the part all by yourself. Search for a pro locally to hire and install the part for you.
Feel free to download your manual for help.
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