Has anybody had any failures of APSmart RSD-S-PLC's? I asked this before and got no responses. I have had no issues myself and they seem consistent and straightforward.
On Thu, Nov 20, 2025, 9:06 AM David Buckner via RE-wrenches < [email protected]> wrote: > Evidence of failures and related issues > > - Overheating and fire: Multiple sources, including court documents, > describe Tigo RSDs that showed signs of extreme overheating, melting, or > being completely incinerated. > - Legal action: A lawsuit was filed against Tigo Energy alleging their > RSDs posed a clear threat of death, injury, and property damage, with > plaintiffs shutting down their own systems as a result. > > Systemic problems: Some reports suggest that failures are not isolated, > with multiple devices failing across different projects. > > - Allegations of a cover-up: The aforementioned lawsuit includes > claims that Tigo was aware of risks and failed to adequately warn > customers, suggesting a cover-up was in progress, *notes Courthouse > News > > <https://www.courthousenews.com/wp-content/uploads/2024/11/2024-29-3-13-14-13-2fb45a16-f38b-4ab2-bfe6-c4ba492b4ab4-2.pdf>* > . > > > ------------------------------ > *From:* David Buckner <[email protected]> > *Sent:* Thursday, November 20, 2025 11:32 AM > *To:* [email protected] <[email protected]>; RE-wrenches < > [email protected]> > *Cc:* Nick Lucchese <[email protected]> > *Subject:* Re: [RE-wrenches] Tigo TS4-A-F > > We have a multitude of these same issues with the TS40-A-F. We followed > every new guideline from Tigo in order to avoid corrupted signals but still > had issues. After a hot breezy day in NJ last year caused a Tigo failure > to spread the roof caught on fire and caused millions in damage. > Thankfully no one was injured. We spent the rest of 2024 pulling 6 MW's of > Tigos off of other roofs for this customer. I have heard multiple stories > of similar issues for many very experienced installers. > > David Buckner > SES > > > ------------------------------ > *From:* RE-wrenches <[email protected]> on behalf > of Nick Lucchese via RE-wrenches <[email protected]> > *Sent:* Wednesday, November 19, 2025 12:11 PM > *To:* [email protected] <[email protected]>; RE-wrenches < > [email protected]> > *Cc:* Nick Lucchese <[email protected]> > *Subject:* Re: [RE-wrenches] Tigo TS4-A-F > > CAUTION: External Email. > Appears that Zonna still has quite a few in stock. Feeling foolish to > purchase more after having a TS4-2F fail into a pile of molten plastic and > ruin a 405 watt bifacial module that I can no longer find a replacement > for. What other options do we have for small DC coupled arrays on > residential rooftops though? Not the most inspiring times to be installing > rooftop PV. Hopefully I'll start having better luck with the single module > units. Numerous times I've had units become bricked and not pass module > voltage but this is the first time I've had this type of catastrophic > failure that also inconveniently cost me the module. > > Nick > > > > > On Mon, Nov 17, 2025 at 7:10 PM William Miller via RE-wrenches < > [email protected]> wrote: > > Friends: > > > > I am having trouble locating these RSDs. Very few vendors appear to have > these and I can’t get any to call back and verify they have them. I can’t > get Tigo to return my calls. Does anyone know if these are discontinued? > > > > What are the rest of you doing for rapid shutdown? I don’t trust Alps: I > have heard too many horror stories. It seems the form factor is too small > to contain arc suppression measures. > > > > Somewhere I saw as an alternative the Tigo TS4-A-O. These are > optimizers. I worry these will fight with the MPPT algorithm in the > inverter or charge controller. There is also the TS4-A-S which has > shutdown and monitoring. > > > > All input is welcome an appreciated. Thanks in advance. > > > > William > > > > Miller Solar > > 17395 Oak Road, Atascadero, CA 93422 > > 805-438-5600 > > www.millersolar.com > > CA Lic. 773985 > > > > > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/[email protected]/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org > > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/[email protected]/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org > >
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