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Samsung UH070CAV Limit Switch
One big reason why limit switches are designed that way is because if the air is not warm enough then you will never get hot air through the ducts. The limit switch has a sensor in the heat exchanger that can determine when the heated air is actually warm enough so that it may be pushed through the ducts and out the vents.
Major signs of an inadequate limit type switch
- The heating and cooling system will not begin the ignition sequence or run for any significant length if time
- The system begins to act weird more often than not
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