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International Comfort Products N8MPN075F16A1 Limit Switch
The limit switch is a type of sensor switch in the air handler that can determine when the air is warm enough for the blower to be activated. Limit switches were created due to the fact that if the air inside the furnace is too cool the you will lose all the heat as the air flows through the ducts.
What are the signs that the limit switch is almost going bad?
- The HVAC system will not begin or continue to run longer than 30 seconds
- The HVAC system is beginning to act differently frequently
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