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International Comfort Products PGAD36D1K1 Limit Switch
The main reason limit switches are made is because if the air is not warm enough then the house will never get warm enough. A normal limit switch has a sensor in the air handler that makes the determination when the air is actually warm enough for the air to begin normal home circulation.
Simple signals critical limit switch is going to die
- The system begins to runs spotty on more than one occasion
- System will not begin or continue to run for any significant length if time
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