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Carrier 48GP060090310 Limit Switch
Limit switches are built because if the air is too cool inside the furnace to begin with, 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 heating area that decides if and when the air is actually warm enough for the air to begin normal home circulation.
Signals of an ineffective critical limit switch
- System will not even start nor will it stay running even though max temp has not been reached
- The whole system begins to run erratically frequently
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