Generac G9.0L G26 — Calibrate Voltage Regulator
Adjustments
For the Generac G9.0L G26, from the Generac service manual.
Applies to: Generac 130 kW PME, Generac 150 kW PME, Generac 9.0L Gaseous Engine (G26) engine
Before you start
- Do not adjust calibration factor below 990 or above 1040.
Procedure
- Set DMM to measure AC voltage at the input side of the breaker.
- Open the main line circuit breaker (MLCB).
- Use voltage adjust (Evolution) or calibration (Nexus) menu to set unit voltage.
- Set AUTO-OFF-MANUAL switch to MANUAL.
- While running, use up or down arrows to adjust the calibration setting.
- Press ENTER to save the new setting.
Tools required
- Digital multimeter (DMM) Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Higher value creates lower voltage at breaker; lower value creates higher voltage.
- Verify output voltage within 5 volts of controller display in DEBUG menu under OUTPUTS.
Source: Generac service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.