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Samsung AQB09JJWC Limit Switch
A normal limit switch has a sensor in the heating area that can determine when the air is actually warm enough to activate the main blower. Limit switches are crucial because if the air is too cool inside the furnace to begin with, then the house will never get warm enough.
Symptoms of a declining main limit switch
- The HVAC system refuses to kick in or continue to run for any length of time
- The system is starting to stop suddenly frequently
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