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International Comfort Products NTC7050BFA3 Limit Switch
The reason limit switches exist is because if the air is not warm enough then you will never get hot air through the ducts. A normal limit switch is a type of sensor switch located in the furnace that determines if and when the air is warmed to a point for the blower to be activated.
Red flags limit type switch needs replacing
- The heating and cooling system is unable to start nor will it stay running longer than a minute
- The system begins to behave erratically occasionally
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