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International Comfort Products C9MPD075F12C2 Limit Switch
A normal limit switch has a sensor in the air handler that makes the determination if and when the air is warmed to a point to activate the main blower. This is important due to the fact that if the air inside the furnace is too cool then the house will never get warm enough.
Clues to watch for in a bad critical limit switch
- The International Comfort Products system begins to become inconsistent frequently
- The HVAC system will not even start or will not stay running as it should
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