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International Comfort Products NDN3100GFA1 Limit Switch
The limit switch is a type of sensor switch in the air handler that senses, or governs, when the air is warm enough so that it may be pushed through the ducts and out the vents. A limit switch was crafted because if the warmed air is too cool then you will never get hot air through the ducts.
Main clues limit type switch will not live much longer
- The HVAC system is starting to behave differently more than once
- The HVAC system is unable to start nor will it stay running for any length of time
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