Generac — To Achieve 240V in 208V Configuration
Adjustments · Power Zone™ Controller
From a Generac owner's manual covering: MMG130, MMG175, MMG205. Check it applies to your exact model before use.
Applies to: Generac MMG130, Generac MMG175, Generac MMG205
Before you start
- Equipment Damage. Verify voltage application before making changes to factory settings.
Procedure
- Shut down unit, move Control Power switch to ON (I).
- Press a directional arrow to enter the maintenance screens.
- Press ► until the Status tab shows the Power Zone™ application version (must be V4 or higher).
- Press any directional arrow to enter maintenance screens.
- Press Enter and O simultaneously to display the Configuration menu.
- Navigate to Config Selection, then Config to Edit, then Selected Configuration.
- Select Alternative Configuration 1.
- Enter Password Entry and enter password 4444 if applicable.
- Highlight Generator, then Generator voltage, then Over Voltage Alarms.
- Set Alarm Trip to 153V.
- Set Pre-alarm Trip to 151V.
- Press and hold Enter for five seconds until the Saving screen appears.
Specs & values
- Alarm Trip 153V
- Pre-alarm Trip 151V
Full service-parts list: Generac MMG175 →
Source: Generac owner's 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.