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International Comfort Products N2A360AKA200 Limit Switch
Limit switches were created because if the warmed air is too cool then the house will never get warm enough. A normal limit switch contains a sensor in the air handler that senses, or governs, when the air is warmed to a point to activate the main blower.
Symptoms critical limit switch needs replacing ASAP
- The whole system is starting to go through the startup sequence but stops quickly often
- System is unable to start or continue to run longer than a minute
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