Migliaccio & Rathod LLP is investigating reports that Power Zone 200 controllers used in certain 2025–2026 Generac Next Generation standby generators may become unresponsive or inoperative during software or firmware updates.
Generac Next Generation generators use the Power Zone 200 controller to manage generator operation. A malfunctioning controller can potentially prevent an otherwise functional standby generator from starting and providing emergency power.
One reported 18 kW generator experienced repeated controller and connectivity problems before its controller allegedly locked up during a software update and would no longer power on. After the controller was replaced, the replacement controller reportedly became inoperative during another update as well. The owner subsequently experienced an extended utility outage without generator protection. Pasted markdown
Other recent reports describe E2780 or missing AC charging errors that technicians have attributed to possible firmware problems, although those reports do not independently establish a common defect. Pasted markdown
Migliaccio & Rathod is investigating whether particular controller or firmware versions can leave Generac Next Generation standby generators unable to operate when emergency power is needed.
Owners May Have Experienced:
- A blank or unresponsive controller display;
- A controller becoming inoperative during or after an update;
- Repeated controller replacements;
- E2780 or missing AC charging errors;
- Failure to complete scheduled exercise cycles;
- Failure to start or transfer power during an outage; or
- A dealer performing a controller reset, replacement, or firmware repair.
Potential Claims May Include:
- Defective controller software or firmware;
- Defective controller components;
- Breach of express or implied warranties;
- Failure to provide an effective software or hardware remedy;
- Loss of use or diminished product value; and
- Violations of applicable consumer-protection laws.
Signs You May Be Affected:
- You own a 2025–2026 Generac Next Generation standby generator;
- Your Power Zone 200 controller became blank or unresponsive;
- The problem occurred during or following a software update;
- Your controller required replacement;
- You experienced E2780 or recurring charging-related errors; or
- The controller problem prevented backup operation during an outage.
If you have encountered these issues, we would like to hear from you. Please complete the contact form on this page, send us an email at [email protected], or give us a call.