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SPT WA-1010E Limit Switch
Limit switches are crucial due to the fact that if the air inside the furnace is too cool the you will lose heat in the ducts and the vents will just blow cool air. A normal limit switch is a type of sensor switch located in the furnace that can determine if and when the air is actually warm enough for the blower to be activated.
What to see if the limit switch is almost dead?
- Your SPT system will not initiate or continue to run even though the desired temperature has not been attained
- Your system is beginning to act weird on a regular basis
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