Powerlink Plc-920 Controller Manual -

Apply 24V DC power and hold for 10 seconds until the ERR and RUN LEDs blink in alternation.

Maintaining the controller itself is straightforward as it has no user-serviceable internal parts. However, proper care of the generator set will ensure the controller operates reliably. As noted on the version record of the official manual, the PLC-920 control system saw updates in 2013 and 2014, so always check you are using the correct version for your unit. powerlink plc-920 controller manual

If you're trying to , please share what is displayed on the screen. Alternatively, I can help you: Apply 24V DC power and hold for 10