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Samsung AVMBH020CA0 Limit Switch
The limit switch has a sensor in the heat exchanger that senses, or governs, when the air is warm enough for the main blower to kick in and circulate the air. This is important because if the air never warms up then you will never get hot air through the ducts.
Major symptoms limit switch will soon need to be replaced
- The heating and AC system is unable to start or will not stay running like it ought to
- Your system begins to run inconsistently on a regular basis
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