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International Comfort Products NDN5075BFC1 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 all the heat as the air flows through the ducts. The limit switch is a switch in the air handler that determines when the heated air is warmed to a point for the blower to be activated.
Signs of a defective limit type switch
- Your system is beginning to ramp up but then stops often
- System will not start or continue to run for any length of time
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Before buying or purchasing do your best and cross-check the correct model as well as make a visual comparison in order to be sure the correct replacement limit switch is being ordered. Installation of the limit switch can be quite easy assuming you have the time and have the tools to do it right.
Feel free to download your manual for help.
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