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SPT WA-1420H Limit Switch
The limit switch is a switch in the heat exchanger that determines if and when the air is warm enough for the blower to be activated. Limit switches are crucial due to the fact that if the air never warms up inside the exchanger the you will lose all the heat as the air flows through the ducts.
Signs main limit switch is going out
- The SPT system is beginning to behave differently on more than one occasion
- The heating and cooling system refuses to start or run well even though max temp has not been reached
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Before buying or ordering any SPT WA-1420H part do your best and double check the correct model as well as make a visual inspection so that you are positive that the correct replacement limit switch is the one being purchased. You do not need to install the replacement part alone. Find a professional in your area to hire and install the part for you.
Feel free to download your manual for help.
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