Growatt inverter error code 203
Growatt uses code 203 in more than one product range, and it doesn't always mean the same thing. Check which range your inverter belongs to below.
WattMate is not affiliated with Growatt. This page summarises Growatt's own published documentation; your installer and Growatt are the authority on your system. WattMate doesn't repair systems or make site visits.
As documented for Min 7000 10000tl X2
- Meaning
- PV Isolation Low
- Likely cause
- Insulation problem
- What the manual says to do
- 1. Check if the panel enclosure is grounded properly. 2. Check if the inverter is grounded properly. 3. Check if the DC breaker gets wet. 4. Check the impedance of PV(+) & PV(-) between ground (must be more than 30KΩ), if the error message displays despite passing checks, contact Growatt.
- Manufacturer's severity
- Critical
Growatt's documentation says this one needs your installer.
Extracted from Growatt's published manual. Check it against the manual for your model. Open the source document
As documented for Min Tl Xh2
- Meaning
- PV Insulation Resistance Low
- Likely cause
- Insulation problem
- What the manual says to do
- Check if the panel enclosure is grounded properly. Check if the inverter is grounded properly. Check if the DC breaker gets wet. Check the impedance between PV(+) and PV(-) and the ground, which must be more than 25KΩ or 550KΩ according to VDE0126 standards. If the error message persists, contact Growatt.
- Manufacturer's severity
- Warning
Growatt's documentation says this one needs your installer.
Extracted from Growatt's published manual. Check it against the manual for your model. Open the source document
As documented for Sph 3000 6000 Tl Hu
- Meaning
- PV1 or PV2 Circuit short
- Likely cause
- Positive and negative poles of the PV input are reversed.
- What the manual says to do
- Reconnect the PV connectors. Please contact Growatt support if the problem persists.
- Manufacturer's severity
- Warning
Extracted from Growatt'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.
- Growatt warranty phone
- 1800476928
- Growatt warranty email
- australia@growatt.com
- Growatt service network
- Open the manufacturer's service page