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Richard ArnoldSep 7, 2025
What to do if Fronius Agilo 75.0-3 Inverter shows 'External NO contact is open'?
- GgmorganSep 7, 2025
If your Fronius Inverter displays 'External NO contact is open - Optional measuring and monitoring relay has tripped', close the external NO contact and check the measuring and monitoring relay. If this status code keeps recurring, contact your system engineer.
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