Growatt PV inverter displaying a fault code?
Sometimes a problem indicated can be resolved without the need to call anyone out or replace hardware. If not then it might give a clue as to what the root cause could be.
- Check to see if your fault code is in the list below.
- All fault codes shown are manufacturer supplied.
- Follow any manufacturers advice indicated next to your error code.
- Many inverters will show an error indicating an internal failure, this usually means a replacement is required, call us for advice or a quote.
- If your inverter does not have a screen and is off-line you could try our home troubleshooting guide to try to get your solution working again.
- If all else fails we would be happy to take your call on 0330 345 3400
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Error Code | Description | Solution |
No AC connection | No utility grid connected or utility grid power failure | This error would normally occur during a grid failure, if you still have electricity connected to your property then check your AC isolator or circuit breaker. If both the isolator and CB are ‘on’ and the problem persists submit a maintenance service request. |
AC V outrange | Utility grid voltage is out of permissible range | This could happen particularly in the summer months if there is a lot of solar in your area, if the problem persists please submit a maintenance service request. |
AC F outrange | Utility grid frequency is out of range | This could happen particularly in the summer months if there is a lot of solar in your area, if the problem persists please submit a maintenance service request. |
Over temperature | Temperature out of range | Restart inverter. If still present, contact Growatt. NOTE: Ensure inverter is not covered causing the inverter to overheat |
PV isolation low | Insulation problem | This can indicate a earth fault on the roof. Submit a maintenance service request |
Output high DCI | Output current DC offset too high | Restart the inverter. If the problem still persists submit a maintenance service request. |
Residual 1 high | Leakage current too high | Restart the inverter. If the problem still persists submit a maintenance service request. |
PV voltage high | DC input voltage is exceeding the maximum tolerable value | Disconnect DC switch immediately and switch off system. Submit a maintenance service request. |
Auto test failed | Auto test failed | Restart the inverter and fault will clear. |
100 | Voltage fault | Submit a maintenance service request. |
101 | Communication fault | Turn off the DC switch and make the inverter totally shut down. Turn on the DC switch to see if the error still exists. If the error persists submit a maintenance service request. |
102 | Consistent fault. Data received by master and slave processor are different | Turn off the DC switch and make the inverter totally shut down. Turn on the DC switch to see if the error still exists. If the error persists submit a maintenance service request. |
116 | EEPROM Fault | When the inverter displays Error: 116, it means there is failure in reading or writing EEPROM. |
117 | Relay fault | There is something wrong with the relay circuit. Restart the inverter, if the problem still persists submit a maintenance service request. |
118 | Init model fault | Submit a maintenance service request. |
119 | GCFI device damage | Something may be wrong with the GCFI device inside the inverter. |
120 | HCT Fault | When the inverter shows Error 120 it means something is wrong with the current sensor. Restart the inverter and if the error persists submit a maintenance service request. |
121 | Communication fault, master processor can’t receive data from slave processor | See error 101 and 102. |
122 | Bus voltage fault | Submit a maintenance service request. |
Remember, our engineering staff are never more than an hour away and can have you back up and running in no time
Give us a call, we will take your details, arrange an engineer, and aim to resolve your solar problem as soon as possible.
Photos are always an effective way to show us your problem too.
Call Bolido Solar on 0330 345 3400 or use the inquiry form and we will call you back
★★★★★
4 weeks ago Read More
Scott designed and carried out a PV cell installation recently. The quote was competitive and the correspondence quick and concise. The fitting was arranged within a week, once the specification was agreed. On site, assisted by Mike, they were helpful and friendly and despite a difficult routing for the cable they came up with a successful solution. The end result is a very tidy, externally & internally, solar fit for the property. Great job and communication throughout, overall I'm very satisfied with their service and would recommend them.
★★★★★
3 weeks ago Read More
Thank you for your outstanding service we received with regards to our solar panels which needed a new inverter. In next to no time, the problem was identified, a replacement ordered, delivered and fitted and the solar panels immediately started to record our readings. I have 100% confidence in recommending Bolido!
★★★★★
2 weeks ago Read More
Very refreshing to get such a thorough and decent service. My company, a solar installations company needed technical assistance on-site for two projects. We also needed help with some of our own IT systems particularly with providing secure internet and network access between us and our clients, primarily for sharing power generation data but also increasingly alongside power usage data. Scott and his team were great with our clients and we just left to it. They were also quick to understand exactly what we wanted to achieve. They carried out all of the work, quickly, cleanly and with the minimum of fuss. We are now in a great position network and IT wise, moving forward we are confident in being able to service bigger clients with however sophisticated a network solution they might require. Highly recommend this company.
★★★★★
1 week ago Read More
Fantastic and thorough service from these guys following birds nesting and ruining the connections on our solar installation. Great communications throughout, and friendly professional service.