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SPT WA-1220H Limit Switch
A normal limit switch is a type of sensor switch located in the furnace that determines when the air is warm enough so that it may be pushed through the ducts and out the vents. This is important because if the air is not warm enough then you will never get hot air through the ducts.
Clues of an inadequate critical limit switch
- Your SPT system will not begin the ignition sequence nor will it stay running like it ought to
- The system begins to become unpredictable repeatedly
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Before buying or ordering do your best and make sure of the correct model as well as make a visual inspection in order to be sure the correct limit switch is being ordered. Replacing a new limit switch is not difficult provided you have the time and have the proper tools to do it right.
Feel free to download your manual for help.
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