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International Comfort Products PGMD48H135C Limit Switch
The reason limit switches exist is because if the air never warms up then you will never get hot air through the ducts. The limit switch is a type of sensor switch located in the furnace that decides when the air is warm enough for the air to begin normal home circulation.
How do you know when your critical limit switch has a need to be replaced?
- The heating and cooling system is unable to start nor will it stay running even though the desired temperature has not been attained
- Your system is starting to initiate and then stops often
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