I have a MIN 1400TL-XH-US and an ATS-11400-US purchased from Signature Solar. The inverter refuses to supply power to the ATS. When grid disconnects, it enters standby mode with warning code 300 (no utility) or 607 (abnormal communication with off-grid box). No voltage on the backup terminals under any conditions.
I spent about 8 hours troubleshooting during a power outage yesterday. Finally Growatt tech support concluded that I have V3 inverter (P/N PV01.0083600) which is not compatible with the ATS-11400-US. I either need to replace the inverter with V2 (P/N PV01.0072901) or replace the ATS-US with an SYN-200-XH-US.
I do not understand how this is possible. The manual for the MIN 11400TL-XH-US on the signature solar product details page shows the ATS-US as of today, over one year since I bought it. How could I possibly find a V2 inverter now that presumably it's been replaced by V3, and the P/N is not specified by the seller? Why would V3 break compatibility with such a simple interface? All it needs to do is apply power to the backup terminals... which apparently have no purpose because the SYN connects only to the GRID terminals?
I am extremely frustrated. Best case scenario, Signature Solar compensates me for the ATS. Then I need to pay for the price difference with SYN, labor to replace it, permitting etc... SYN is bigger so it won't fit on the wall where the ATS-US was. Now I have to back up the entire house, not just my critical loads panel.
Any tips for how to make this work? Or escalate with Growatt Tech Support? Or Signature Solar Customer Service?
I spent about 8 hours troubleshooting during a power outage yesterday. Finally Growatt tech support concluded that I have V3 inverter (P/N PV01.0083600) which is not compatible with the ATS-11400-US. I either need to replace the inverter with V2 (P/N PV01.0072901) or replace the ATS-US with an SYN-200-XH-US.
I do not understand how this is possible. The manual for the MIN 11400TL-XH-US on the signature solar product details page shows the ATS-US as of today, over one year since I bought it. How could I possibly find a V2 inverter now that presumably it's been replaced by V3, and the P/N is not specified by the seller? Why would V3 break compatibility with such a simple interface? All it needs to do is apply power to the backup terminals... which apparently have no purpose because the SYN connects only to the GRID terminals?
I am extremely frustrated. Best case scenario, Signature Solar compensates me for the ATS. Then I need to pay for the price difference with SYN, labor to replace it, permitting etc... SYN is bigger so it won't fit on the wall where the ATS-US was. Now I have to back up the entire house, not just my critical loads panel.
Any tips for how to make this work? Or escalate with Growatt Tech Support? Or Signature Solar Customer Service?