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Mitsubishi MSZ-FA25VA Limit Switch
The main reason limit switches are made is due to the fact that if the air never warms up inside the exchanger then the house will never get warm enough. The limit switch has a sensor located in the furnace that senses, or governs, if and when the air is actually warm enough so that it may be pushed through the ducts and out the vents.
Clues to watch for to know limit switch will eventually need to be replaced
- Your system begins to become inconsistent frequently
- The HVAC system will not begin nor will it stay running like it should
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