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Whirlpool ATR1252SPP0 Limit Switch
A normal limit switch has a sensor in the heating area that makes the determination if and when the air is warmed to a point so that it may be pushed through the ducts and out the vents. Limit switches were created because if the air is not warm enough then you will never get hot air through the ducts.
Easy warnings of an ineffective main limit switch
- System will not begin the ignition sequence nor will it stay running even though the desired temperature has not been attained
- The HVAC system starts to runs uneven time after time
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