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International Comfort Products PGC048H080F Limit Switch
A normal limit switch contains a sensor located in the furnace that senses, or governs, when the air is actually warm enough for the air to begin normal home circulation. The main reason limit switches are made is because if the air is not warm enough the you will lose heat in the ducts and the vents will just blow cool air.
Key signs of a worsening critical limit switch
- The heating and cooling system refuses to kick in nor will it stay running for any significant length if time
- The whole system is starting to run inconsistently often
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