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International Comfort Products N9MP1050B12C1 Limit Switch
Limit switches are built due to the fact that if the air never warms up inside the exchanger then the house will never get warm enough. A normal limit switch contains a sensor located in the furnace that can determine when the heated air is warm enough for the main blower to kick in and circulate the air.
Subtle cues of a barely functioning limit switch
- The system is starting to initiate and then stops frequently
- The HVAC system is unable to start or will not stay running longer than 30 seconds
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