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F
e15
Moderate
FlashForge · FDM 3D Printers
WiFi Module Error - Cannot Initialize or Connect WiFi
Quick Answer
Error code E15 on your FlashForge FDM 3D Printers means: WiFi Module Error - Cannot Initialize or Connect WiFi. This is usually fixable — see the step-by-step guide below.
Likely Causes
  1. WiFi module firmware is corrupted or outdated
  2. WiFi antenna inside the printer is disconnected
  3. Router is broadcasting on 5GHz only and the printer only supports 2.4GHz
  4. WiFi module hardware has failed
  5. Network password contains special characters not supported by the printer input
How to Fix It
1
Restart the printer and attempt WiFi connection again from the touchscreen network settings
2
Verify the router has a 2.4GHz network enabled and the printer is connecting to the correct SSID
3
Re-enter the WiFi password carefully, avoiding special characters if possible
4
Update the printer firmware to the latest version which may include WiFi fixes
5
If WiFi fails consistently, use an Ethernet connection (if available) or USB/SD card transfer as an alternative
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Replacement WiFi module (if hardware failure)
Ethernet cable (for models with Ethernet port)
Related Error Codes
E01E02E03E04E05
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