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Samsung AVMWH052EA0 Limit Switch
One big reason why limit switches are designed that way is because if the air never warms up the you will lose heat in the ducts and the vents will just blow cool air. A normal limit switch contains a sensor in the air handler that senses, or governs, when the air is actually warm enough for the blower to be activated.
Signs limit switch is failing
- The heating and AC system refuses to start or run even though max temp has not been reached
- The system is starting to become unpredictable on a regular basis
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