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Heat Controller VMH12SC-1 Limit Switch
The reason limit switches exist is because if the air never warms up then the house will never get warm enough. A normal limit switch is a type of sensor switch located in the furnace that decides when the air is warmed to a point for the blower to be activated.
Clues to watch for to know critical limit switch is in dire need of a replacement
- System is unable to start or run longer than 30 seconds
- The whole system begins to erratically on more than one occasion
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Before you decide on buying or ordering, do your due diligence and double check the correct model as well as make a visual inspection in order to be sure the proper replacement limit switch is the one being purchased. Some pros may have higher labor rates than others so it is best to shop around to acquire the best rate if money is a concern.
Feel free to download your manual for help.
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