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A functional Reznor high limit switch should show zero resistance (normally closed) at room temperature
protecting the blower motor and reducing residential noise levels
such as inaccurate discharge air readings or improper low-ambient operation
excessive carbon buildup on the tip
Common Questions & Technical Insights What systems use the Honeywell AT20A1123
Lochinvar & A.O. Smith 100233594 Burner Gasket Els PW 17895 A functional Reznor high limitThe Lochinvar & A. O. Smith 100233594 Burner Gasket is a critical high temperature seal engineered for high efficiency condensing boilers and water heaters. As a direct OEM replacement part for GKT2062 (also indexed as GKT2062K and 100146481), this component ensures a gas tight interface between the burner assembly and the combustion chamber. Maintaining a precise seal is vital for preventing flue gas leakage and ensuring optimal combustion efficiency