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Samsung AVMHH105EA0 Limit Switch
The main reason limit switches are made is due to the fact that if the air inside the furnace is too cool then you will never get hot air through the ducts. The limit switch has a sensor in the air handler that senses, or governs, when the air is warmed to a point for the main blower to kick in and circulate the air.
General indicators that your critical limit switch is failing
- Your Samsung system refuses to kick in or continue to run longer than 10 minutes
- The HVAC system is beginning to run inconsistently on more than one occasion
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