the 100208087 is technically identical to the GKT2012 and GKT2012K part numbers

A 'SYS' alarm typically points to a communication failure with a previously detected sensor or a fault in the system configuration

It utilizes standard flame rectification technology

Key Benefits for Technicians Direct OEM Fit: Drop-in interchangeability with Trane part numbers RLY01685

Common Technical Questions: How do I adjust the temperature setpoint on the Fenwal 11-030000-048

Warrick 26C1C0A LWCO Board 320788-704 the 100208087 is technically identicalThe Warrick 26C1C0A is a heavy duty, series 26 low water cut off (LWCO) controller designed for reliable boiler water level control. This conductive liquid level control features an auto reset function, ensuring the burner circuit restores power automatically once the water level rises above the probe. Operating on 120 VAC, the 10K ohm sensitivity is ideal for standard feedwater applications, providing a precise probe voltage to prevent dry firing.