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Nordyne M3RL Series Limit Switch
The limit switch is a switch in the air handler that makes the determination when the air is warmed to a point for the blower to be activated. A limit switch was crafted 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.
Some warnings limit switch is failing
- The whole system starts to act weird occasionally
- The HVAC system refuses to start or will not stay running longer than 10 minutes
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If you decide on picking up or ordering do your best and make sure of the model number as well as make a visual inspection so that you are positive that the right limit switch is the one being purchased. Replacing the limit switch is a piece of cake if you possess the knowledge and have the proper tools to get it done.
Feel free to download your manual for help.
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