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International Comfort Products GNE050B12G1 Limit Switch
One big reason why limit switches are designed that way is because if the air never warms up the you will lose heat in the ducts and the vents will just blow cool air. A normal limit switch has a sensor in the air handler that senses, or governs, when the heated air is actually warm enough for the air to begin normal home circulation.
Warnings of an inadequate limit switch
- The system begins to behave erratically time after time
- The heating and cooling system will not begin the ignition sequence or continue to run as it should
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