## Troubleshooting

### [System Beeping, Buzzing, or Humming](https://support.rachio.com/en_us/system-beeping-buzzing-or-humming-ByOpho8YY)
**Summary** Are you hearing a beep, high pitch, or humming sound coming from near your controller and wondering if there is something wrong with your unit? This article covers...
**Last Update**: April 13th 2026, 11:44am

### [Offline Device Functionality](https://support.rachio.com/en_us/offline-device-functionality-SyboPIkFv)
**Summary** The controller needs to be connected to the wifi to update data, but you might be wondering what happens if your Wi-Fi somehow stops working. Will your system...
**Last Update**: April 13th 2026, 9:02pm

### [Intermittent Connectivity Issues and Advanced WiFi Troubleshooting](https://support.rachio.com/en_us/intermittent-connectivity-issues-and-advanced-wifi-troubleshooting-ByfiPUyKw)
**Summary** If your Rachio controller is experiencing frequent disconnections or intermittent Wi-Fi connectivity, this guide walks through troubleshooting steps ranging...
**Last Update**: April 25th 2026, 1:20pm

### [Connect Rachio 3 to WiFi Using a Laptop or Older Mobile Device](https://support.rachio.com/en_us/connect-rachio-3-to-wifi-using-a-laptop-or-older-mobile-device-HJIBvLyFv)
**Summary** Newer iOS and Android devices may have difficulty completing the initial Wi-Fi connection with some Rachio 3 controllers. This article covers alternative methods...
**Last Update**: April 25th 2026, 1:25pm

### [Troubleshooting the Rachio Wireless Flow Meter](https://support.rachio.com/en_us/troubleshooting-the-rachio-wireless-flow-meter-BkhCwUytv)
**Summary** While Rachio no longer manufactures the Wireless Flow Meter, the device is still supported in the Rachio app. This article covers troubleshooting for common issues...
**Last Update**: April 25th 2026, 3:03pm

### [Light Codes (Rachio 3)](https://support.rachio.com/en_us/light-codes-(rachio-3)-B1t8wUkKv)
**Summary** This article covers the LED light codes displayed on the Rachio 3 Smart Sprinkler Controller and explains what each code means. Light codes communicate...
**Last Update**: June 17th 2026, 1:46pm