Air-Cooled Standby Generators

Two-wire start is a feature that allows a generator to be started using a non-Generac switch. This feature requires purchasing and installing a kit, and also programming the controller.

Error code 2770, labeled "CHARGER WARNING," indicates that the battery is not charging properly due to a blown T1 fuse or an issue with the charging circuit. Basic troubleshooting includes checking the battery health, verifying charging connections, and ensuring there is no corrosion at the battery terminals. If problems persist, it is...

This article helps owners identify error codes, alarms, and warnings on Generac air-cooled home standby generators. It explains which Next Generation and Guardian Series codes may require dealer service, how to clear an alarm, and where to find dedicated troubleshooting articles for specific codes so customers can take the right next...

Generac offers a wide range of generator accessories for portable, air-cooled home standby, and residential liquid-cooled units to enhance performance, reliability, and convenience. Accessories include maintenance kits, cold weather kits, oil and battery warmers, transfer switches, power inlet boxes, cords, plugs, Mobile Link connectivity...

This article explains when you need a different battery tray to use the newer 30L battery on next-generation air-cooled home standby generators. If you are upgrading a generator that was originally configured for a 20L AGM battery, or installing a 30L battery on older inventory built before 30L became standard, a 30L-compatible tray is...

Explains that Generac home standby generators do not display real-time electrical load, such as amps or kilowatts, on the controller or in Mobile Link. Covers how an IASD or licensed electrician can measure output using amp clamps and calculations, or install CT clamps for monitored measurement, and why a load audit helps confirm proper...

Use this article if your Generac home standby generator does not start when utility power is lost. It covers what to check on the control panel or Mobile Link, including Auto mode, alarms, and common power and battery-related causes. If internet is down and Mobile Link is unavailable, it also links to instructions for running the...

Explains how long a Generac home standby generator exercise cycle runs by default, and when exercise duration can be changed, including PowerZone 200 models using a Premium Mobile Link subscription. Also explains how to verify whether the generator is truly exercising or running due to a detected utility outage by checking the controller...

This article explains why a home standby generator requires an automatic transfer switch, and what risks can occur if a transfer switch is not used. It also answers whether a generator “comes with” an ATS, including why some systems are bundled and others are not, then points to compatibility and ATS education resources. This helps...

For specific battery size information, check the generator's User Manual or check the Battery Type Section of your generator's product overview on the Online Product Lookup ​​​​​​​tool at https://www.generac.com/service-support/product-support-lookup.