Deye Wi-Fi Module Not Connecting — Troubleshooting Guide

A disconnected Wi-Fi module means you lose remote monitoring and cannot programme time-of-use settings from the SolarMan app. Most Wi-Fi issues with Deye inverters have simple solutions.

Common Causes and Solutions

1. Router Using 5 GHz Band

The Deye Wi-Fi module only supports 2.4 GHz networks. Many modern routers default to 5 GHz or use a combined band. Go to your router settings and either create a separate 2.4 GHz network or ensure the combined network broadcasts on 2.4 GHz.

2. Weak Signal

The inverter's Wi-Fi antenna has limited range — typically 10-15 metres through one wall. If your router is far away:

• Move the router closer or add a Wi-Fi range extender
• Use a powerline adapter to bring connectivity closer to the inverter
• The signal needs at least -70 dBm strength for reliable connection

3. Router Password or SSID Changed

If you changed your Wi-Fi network name or password, the inverter will disconnect. Reconfigure by:

1. Hold the Wi-Fi module reset button for 5 seconds until the LED blinks rapidly
2. Connect your phone to the inverter's AP hotspot
3. Open SolarMan app and enter the new Wi-Fi credentials

4. Too Many Connected Devices

Some routers limit the number of connected devices. If you have many smart home devices, the inverter may be unable to obtain an IP address. Check your router's DHCP settings and increase the device limit if needed.

5. Firmware Update Needed

Older Wi-Fi module firmware may have connectivity bugs. Check the SolarMan app for available updates and install them over the local hotspot connection.

Step-by-Step Reset Process

1. Press and hold the reset button on the Wi-Fi module for 5 seconds
2. The LED should blink rapidly indicating AP mode
3. On your phone, connect to the "AP_xxxxxxxx" network (password: 12345678)
4. Open the SolarMan Smart app and go to Device Settings
5. Select your home Wi-Fi network and enter the password
6. Wait 2-3 minutes for the LED to turn solid green
7. Verify data appears in the SolarMan app

When Hardware Replacement Is Needed

If the Wi-Fi LED does not light up at all, or the module does not enter AP mode after reset, the module may be physically damaged. In the UAE, dust and heat can occasionally damage electronics. Contact your Deye distributor for a replacement module — they are inexpensive (AED 100-200) and easy to swap.