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Mitsubishi PLA-ABA Limit Switch
Limit switches exist because if the warmed air is too cool then the house will never get warm enough. A normal limit switch is a type of sensor switch in the heat exchanger that determines if and when the air is warm enough to activate the main blower.
Main clues limit switch has to be replaced
- The whole system starts to go through the startup sequence but stops quickly often
- Your Mitsubishi system will not even start or will not stay running as it should
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