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Friedrich MW18Y3H Limit Switch
Limit switches are crucial due to the fact that if the air never warms up inside the exchanger then you will never get hot air through the ducts. A normal limit switch contains a sensor in the heat exchanger that decides when the air is warm enough so that it may be pushed through the ducts and out the vents.
Hints of a defective limit switch
- The HVAC system is starting to initiate and then stops frequently
- The heating and AC system will not start or continue to run longer than a minute
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Before buying or purchasing any Friedrich MW18Y3H part, do your due diligence and cross-check the model number as well as make a visual comparison in order to be sure the proper replacement limit switch is being ordered. You do not have to install the replacement part alone. Hire a pro in your town or city to do the job for you.
Feel free to download your manual for help.
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