Generac 63904/063904/0639040SRV GTS System Control PCB. This is for the PCB only and not the faceplate. This has settings for Engine Minimum Run, Engine Warmup, Return To Utility, Engine Cooldown, etc. This is NOT the same PCB as the In-Phase Monitor which was used in later versions of the GTS switches.
Generac replacement parts will also usually fit the following Generac branded generators: Honeywell, Guardian, Siemens, Carrier, Watchdog, Centurion, & Bryant.
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