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Carrier 38YDB036 Limit Switch
One big reason why limit switches are designed that way is due to the fact that if the air inside the furnace is too cool the you will lose heat in the ducts and the vents will just blow cool air. A normal limit switch contains a sensor located in the furnace that makes the determination when the heated air is warm enough for the blower to be activated.
How can I tell if my critical limit switch is failing?
- The heating and cooling system refuses to start or will not stay running for any significant length if time
- Your system is starting to initiate and then stops more often than not
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Before buying or ordering, do your due diligence and make sure of the correct model and also make a visual inspection in order to be sure the right limit switch is being ordered. HVAC pros could be quite expensive to hire so you may want to keep a lookout locally to acquire the best rate if you do not want to pay too much.
Feel free to download your manual for help.
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