I have 2 of these charge controllers, one was installed over July 4th weekend, the other unit was installed late July/early August. The first MPPT has worked flawlessly, no problems.
The second MPPT started to set a F01 code- Bus soft start failed after 2 weeks of use. This was right before I was headed out for 2 weeks of vacation so I decided to switch back to grid power while we were gone. Upon returning Monday, I flipped back over to solar power and in the evening the F01 code returned.
I filled out the tech support form on SS website Tuesday morning at about 7am. Never heard back. Decided today that I had some time to call in and see how long I would be on hold. Called at 4:12 PM and finally had a tech on the phone at 4:36 PM. That song playing will give me nightmares in my sleep I heard it so many times.
While waiting, I was on SS website for this charge controller and read the reviews. Ran across this one:
04/24/2023
Ron Little
good performance
So far charge controller is as expected. The display shows a faint data symbol suggesting that data such as kw a day may be displayed, but I can't bring that data up via front panel push buttons. Also at the end of the solar charging day, the unit starts throwing o1 errors. Hopefully there is a software update to address these issues. I will contact Signature Solar to see what they suggest.
I guess I'm not the only one seeing this code. Tech had to check with the supervisor and came back with the response they need photos of the following:
I hope this email finds you well. I am reaching out to request your
assistance in troubleshooting further. We will need ALL photos and
readings requested below to move forward. Photos:
- Wide shot of the overall system installation
- Main Panel
- Sub panels
- Connection of AC input to the inverter (if available)
- Connection of AC output to the inverter
- Connection of PV to the inverter
- Connection of batteries to the inverter
- Inverter screen
Connection of AC input to the Mppt Charge controller (if available)
- Connection of AC output to the Mppt Charge controller
- Connection of PV to the Mppt Charge controller
- Connection of batteries to the Mppt Charge controller
- Mppt Charge controller screen
- Label of the inverter clearly showing the Serial Number and Model Number
Readings:
- PV voltmeter readings
- Battery DC readings on DC In of Inverter as well as battery terminals
- AC output readings
- AC input readings (if available)
In addition, if you are experiencing a warning or fault code, please
provide a short recording of the event. Thank you for your prompt
attention to this matter. I am confident that with your help, we will
be able to resolve any issues and get the system running smoothly.
I still had the tech on the phone and laughed about the AC connections to the inverter and he responded I can ignore any inverter related photo requirements. My guess is that means about 2 photos???
I asked what criteria causes this code to set. Of course I never really received an answer other than it can be many things such as installer error.
I'm pretty certain it won't be a photo shoot but a video instead.
