GoodWe inverter error code Isolation Failure
GoodWe uses code Isolation Failure 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 GoodWe. This page summarises GoodWe's own published documentation; your installer and GoodWe are the authority on your system. WattMate doesn't repair systems or make site visits.
As documented for Ehb
- Meaning
- Ground insulation impedance of PV string is too low
- Likely cause
- Could be caused by improperly grounded PV panels, broken DC cable, aged PV panels, or high humidity
- What the manual says to do
- Use multi-meter to check resistance between earth & inverter frame. If it's not close to zero, ensure connection is well.
- Manufacturer's severity
- Critical
GoodWe's documentation says this one needs your installer.
Extracted from GoodWe's published manual. Check it against the manual for your model. Open the source document
As documented for Et
- Meaning
- Ground insulation impedance of PV string is too low
- Likely cause
- Isolation failure could be caused by multiple reasons like that the PV panels are not grounded well, DC cable is broken, PV panels are aged or surrounding humidity is comparatively heavy
- What the manual says to do
- 1. Use multi-meter to check if the resistance between earth & inverter frame is close to zero. 2. If it's not, please ensure that the connection is well. 3. Check the resistance between PV1+/PV2+/PV3+/PV4+/BAT+/PV- to earth.
- Manufacturer's severity
- Critical
GoodWe's documentation says this one needs your installer.
Extracted from GoodWe's published manual. Check it against the manual for your model. Open the source document
As documented for Geh
- Meaning
- Ground insulation impedance of PV string is too low
- Likely cause
- Isolation failure could be caused by multiple reasons like the PV panels are not grounded well, DC cable is broken, PV panels are aged or surrounding humidity is comparatively heavy.
- What the manual says to do
- Use a multi-meter to check if the resistance between earth & inverter frame is close to zero. If it's not, ensure that the connection is well. If the humidity is too high, isolation failure may occur.
- Manufacturer's severity
- Critical
GoodWe's documentation says this one needs your installer.
Extracted from GoodWe'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.
- GoodWe warranty phone
- 0399183905
- GoodWe warranty email
- service.au@goodwe.com
- GoodWe service network
- Open the manufacturer's service page