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International Comfort Products PGAD24D1K1 Limit Switch
The limit switch is a type of sensor switch in the heat exchanger that determines if and when the air is warm enough that it can be circulated throughout the house. Limit switches are built due to the fact that if the air inside the furnace is too cool then you will never get hot air through the ducts.
Elements of a bad critical limit switch
- The heating and AC system will not initiate nor will it stay running like it should
- Your system is beginning to behave erratically frequently
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