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International Comfort Products CXA460AKA1 Limit Switch
One big reason why limit switches are designed that way is because if the warmed air is too cool the you will lose all the heat as the air flows through the ducts. The limit switch contains a sensor located in the furnace that can determine when the heated air is actually warm enough for the air to begin normal home circulation.
Signals limit switch needs replacing
- The HVAC system starts to go through the startup sequence but stops quickly more than once
- The heating and cooling system will not begin or run like it should
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