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Carrier 38YRA048 Limit Switch
One big reason why limit switches are designed that way is due to the fact that if the air never warms up inside the exchanger the you will lose all the heat as the air flows through the ducts. The limit switch has a sensor in the heat exchanger that decides when the air is warm enough to activate the main blower.
Signs main limit switch is in dire need of a replacement
- The HVAC system is starting to erratically on more than one occasion
- System will not begin the ignition sequence or run well longer than 10 minutes
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Before you decide on buying or purchasing a new Carrier 38YRA048 replacement part, do your due diligence and cross-check the model number and also make a visual inspection so that you are positive that the correct limit switch is being ordered. HVAC pros could be quite expensive to hire so you could call around to find a good deal if money is a concern.
Feel free to download your manual for help.
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