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Whirlpool ATR0955CPP0 Limit Switch
Limit switches exist because if the air is not warm enough the you will lose heat in the ducts and the vents will just blow cool air. The limit switch contains a sensor located in the furnace that determines if and when the air is actually warm enough to activate the main blower.
Main clues main limit switch should need replacing
- The system is beginning to run erratically on more than one occasion
- System will not even start or run well longer than 10 minutes
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