Bill - SMA is continuously working to improve the accuracy of our AFCI detection and minimize impacts on system operation of this important safety function.
Intentionally degrading the signal coming into the Sunny Boy for the AFCI detection to act on is not recommended. The most up to date FW for both the US-40 and US-41 lines provide for automatic restarts from AFCI events. An error message will be logged for each event and feed-in will be suspended, but the inverter will go back into production. If these events occur with high regularity, PLEASE treat this as a true arc fault and carefully investigate the system. The SMA Online Service Center hosts a large number of articles in the knowledge base for perusal (login is not required, but some articles will be hidden without login). Please contact the SMA America Service Line for inverter/site specific troubleshooting recommendations and or login to the Online Service Center to view Knowledge Articles: https://my.sma-service.com SMA-America service line: [email protected] and 1-877-697-6283 (6am-5pm PT, Mon-Fri) Best regards - Mike Michael Mahon Senior Technical Trainer, Solar Academy SMA America 3925 Atherton Rd Rocklin, CA 95765 Mobile: +1 916 918 9412 www.SMA-America.com Solar Academy website Upcoming SMA America Solar Academy webinars: English and Spanish This email and any attachments thereto may contain SMA America, LLC confidential, privileged and private material for the sole use of the intended recipient. Any review, copying, or distribution of this email (or any attachments thereto) by others is strictly prohibited. If you are not the intended recipient, please contact the sender immediately and permanently delete the original and any copies of this email and any attachments thereto. Thank you. -----Original Message----- From: RE-wrenches <[email protected]> On Behalf Of frenergy via RE-wrenches Sent: Thursday, March 31, 2022 8:49 AM To: Tump via RE-wrenches <[email protected]> Cc: frenergy <[email protected]> Subject: [RE-wrenches] SMA AFCI events and ferrite cores Wrenchers, In searching the list I saw ferrite cores discussed for EMP and Enphase but a tech at SMA just told me I can put the DC conductors through ferrite cores to prevent false AFCI events in their SB-40 and -41 inverters. Is this a thing? are folks doing this with success? Any tricks to installation?...seems straight forward. Thanks, Bill Feather River Solar Electric Bill Battagin, Owner 4291 Nelson St. Taylorsville, CA 95983 530.284.7849 CA Lic 874049 -- This email has been checked for viruses by Avast antivirus software. https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.avast.com%2Fantivirus&data=04%7C01%7Cmichael.mahon%40sma-america.com%7C78b58dc6cb2842854b7f08da1324fcfb%7Ca059b96c28294d1188374cc1ff84735d%7C0%7C1%7C637843346837118107%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=PHzGZUVRy78gQfF2%2FX9R9Q6kOtjaoAPmRePVqZZ5r4M%3D&reserved=0 _______________________________________________ List sponsored by Redwood Alliance Pay optional member dues here: https://eur02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fre-wrenches.org%2F&data=04%7C01%7Cmichael.mahon%40sma-america.com%7C78b58dc6cb2842854b7f08da1324fcfb%7Ca059b96c28294d1188374cc1ff84735d%7C0%7C1%7C637843346837118107%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=brPQII9VaB5gt92IJRxZJGjKy%2BM9GOKY8OkhjempSxo%3D&reserved=0 List Address: [email protected] Change listserver email address & settings: https://eur02.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.re-wrenches.org%2Foptions.cgi%2Fre-wrenches-re-wrenches.org&data=04%7C01%7Cmichael.mahon%40sma-america.com%7C78b58dc6cb2842854b7f08da1324fcfb%7Ca059b96c28294d1188374cc1ff84735d%7C0%7C1%7C637843346837118107%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=OdV%2F6F6x%2FNnNVakUDKXN%2BE%2F2ax%2BGSIy8P2gxXpuZfnc%3D&reserved=0 There are two list archives for searching. 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