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Fujitsu ASU36CLX Limit Switch
The main reason limit switches are made is because if the air never warms up the you will lose all the heat as the air flows through the ducts. A normal limit switch has a sensor located in the furnace that determines if and when the air is warm enough so that it may be pushed through the ducts and out the vents.
Warnings limit switch is in dire straights
- Your Fujitsu system will not start or will not stay running longer than 10 minutes
- The whole system begins to run erratically from time to time
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