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Samsung AVMBC032CA0 Limit Switch
One big reason why limit switches are designed that way is due to the fact that if the air inside the furnace is too cool then the house will never get warm enough. The limit switch is a switch in the air handler that makes the determination when the air is warm enough for the main blower to kick in and circulate the air.
Major signs critical limit switch is dead
- The HVAC system will not even start or will not stay running for any significant length if time
- The whole system begins to behave erratically repeatedly
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