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LG LMU360HE Limit Switch
One big reason why limit switches are designed that way is because if the air is not warm enough then the house will never get warm enough. A normal limit switch contains a sensor located in the furnace that can determine when the air is warm enough for the blower to be activated.
Major signs main limit switch is not going to last much longer
- The HVAC system will not even start or continue to run for any significant length if time
- The HVAC system is starting to become unpredictable repeatedly
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