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International Comfort Products NDN5100BHC2 Limit Switch
A normal limit switch contains a sensor in the air handler that makes the determination if and when the air is actually warm enough for the air to begin normal home circulation. A limit switch was crafted because if the warmed air is too cool then you will never get hot air through the ducts.
Elements of a dying main limit switch
- The system begins to run inconsistently repeatedly
- The heating and AC system will not begin the ignition sequence or will not stay running longer than 30 seconds
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