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International Comfort Products PGF036K060A Limit Switch
A normal limit switch contains a sensor in the air handler that determines when the air is actually warm enough for the blower to be activated. Limit switches are built because if the air is too cool inside the furnace to begin with, the you will lose all the heat as the air flows through the ducts.
Warnings critical limit switch has to be replaced
- The whole system begins to become unpredictable more than once
- The HVAC system will not begin the ignition sequence or run longer that five minutes
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