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International Comfort Products NDN5125BKC1 Limit Switch
A normal limit switch has a sensor in the heat exchanger that determines if and when the air is actually warm enough for the blower to be activated. One big reason why limit switches are designed that way is because if the air is not warm enough then the house will never get warm enough.
Major clues main limit switch will need to be replaced
- The HVAC system refuses to kick in or run well for any significant length if time
- The whole system is beginning to behave differently occasionally
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If you are going to be buying or ordering, do your due diligence and make sure of the correct model and also make a visual inspection so that you are positive that the correct limit switch is the one being purchased. The installing of a new limit switch is not difficult assuming you energy and have the tools to do it right.
Feel free to download your manual for help.
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