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LG LMU180CE Limit Switch
Limit switches were created due to the fact that if the air inside the furnace is too cool the you will lose heat in the ducts and the vents will just blow cool air. The limit switch contains a sensor in the heat exchanger that decides when the heated air is actually warm enough for the air to begin normal home circulation.
Key symptoms of a worsening limit switch
- The LG system is beginning to become unpredictable on more than one occasion
- The HVAC system will not start or continue to run as it should
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