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International Comfort Products NTP6050FBA1 Limit Switch
One big reason why limit switches are designed that way is due to the fact that if the air inside the furnace is too cool then the house will never get warm enough. The limit switch contains a sensor in the heating area that senses, or governs, when the air is warm enough for the blower to be activated.
Cues of a faulty critical limit switch
- The heating and AC system will not start or will not stay running for any significant length if time
- The whole system starts to become inconsistent frequently
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