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Whirlpool ATE0752CPP0 Limit Switch
The limit switch contains a sensor in the heating area that makes the determination if and when the air is warm enough so that it may be pushed through the ducts and out the vents. Limit switches are built due to the fact that if the air never warms up inside the exchanger then you will never get hot air through the ducts.
Subtle cues of a deteriorating main limit switch
- The HVAC system will not even start nor will it stay running longer than a minute
- The HVAC system is beginning to erratically more than once
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