1064
UnclassifiedSpeed
What This Code Means
VSCF Speed PWM Loss; Main controller detects the speed PWM command from VSCF is not received
Possible Causes
- •AVR is faulty
- •Connector is loose
- •Controller is faulty
- •Speed signal wire is missing between the AVR and HSB controllers
- •Speed signal wire is shorted or miswired
- •Speed signal wire missing between AVR and HSB controllers
- •Speed signal wire shorted or miswired
- •The AVR is faulty
- •The controller is faulty
- •The speed signal wire is missing between the AVR and HSB controllers
- •The speed signal wire is shorted or miswired, or connector is loose
Suggested Actions
- 1Check connector and pin fit
- 2Check continuity on the PWM communication lines
Related Generac Fault Codes
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Get a diagnosis walkthrough for 1064 on your specific Generac unit — cited to the OEM manual, not a forum guess.
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