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Friedrich MW09Y3H Limit Switch
Limit switches are crucial because if the air is not warm enough the you will lose heat in the ducts and the vents will just blow cool air. A normal limit switch has a sensor in the heat exchanger that senses, or governs, when the air is actually warm enough for the blower to be activated.
Signals limit switch is not going to last much longer
- The heating and cooling system will not begin the ignition sequence or continue to run longer that five minutes
- The system is beginning to run inconsistently more often than not
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If you are going to be buying or purchasing a replacement limit switch for your Friedrich MW09Y3H do your best and cross-check the model number as well as make a visual comparison so that you are positive that the right limit switch is the one being purchased. HVAC pros can be expensive so you may want to keep a lookout locally to acquire the best rate if you want to pay bottom dollar.
Feel free to download your manual for help.
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