Hoymiles inverter error code GRID_UNDERVOLTAG
WattMate is not affiliated with Hoymiles. This page summarises Hoymiles's own published documentation; your installer and Hoymiles are the authority on your system. WattMate doesn't repair systems or make site visits.
What it means
- Meaning
- Grid Undervoltage
- Likely cause
- The grid voltage is lower than the permissible range.
- What the manual says to do
- The inverter will reconnect to the grid after recovery. Check safety setting, grid voltage stability, and AC cable connections if the alarm persists.
- Manufacturer's severity
- Warning
Hoymiles's documentation says this one needs your installer.
Extracted from Hoymiles's published manual. Check it against the manual for your model. Open the source document
When to call your installer or the warranty line
Your installer is your first warranty contact. If they've gone, the manufacturer's warranty line still covers the hardware. Don't open the inverter or battery case yourself: work inside it is for a licensed electrician.
If you see smoke, scorch marks or smell burning, switch the system off at the AC and PV isolators and call your installer. If anyone is in danger, call 000.
- Hoymiles warranty email
- service.au@hoymiles.com
- Hoymiles service network
- Open the manufacturer's service page