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International Comfort Products H2A336GKA100 Limit Switch
The limit switch has a sensor located in the furnace that senses, or governs, when the heated air is warmed to a point for the air to begin normal home circulation. Limit switches are crucial because if the air never warms up then the house will never get warm enough.
Easy warnings of a bad main limit switch
- The heating and cooling system will not even start nor will it stay running as it should
- The whole system begins to run erratically repeatedly
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