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International Comfort Products GDL050N12A1 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 the you will lose heat in the ducts and the vents will just blow cool air. The limit switch is a switch located in the furnace that makes the determination if and when the air is warmed to a point for the air to begin normal home circulation.
Red flags critical limit switch is dying
- System will not even start or run for any length of time
- The HVAC system starts to initiate and then stops occasionally
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