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Mitsubishi MSZ-A24NA Limit Switch
A normal limit switch has a sensor in the heat exchanger that makes the determination if and when the air is actually warm enough for the main blower to kick in and circulate the air. Limit switches were created because if the air is not warm enough the you will lose all the heat as the air flows through the ducts.
Major warnings main limit switch has little life left
- The HVAC system will not even start or run well for any length of time
- The HVAC system is beginning to act differently frequently
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