HomeBrandsFormlabsProfessional Resin 3D Printers140
F
140
Easy Fix
Formlabs · Professional Resin 3D Printers
WiFi Connection Lost - Printer Disconnected From Network
Quick Answer
Error code 140 on your Formlabs Professional Resin 3D Printers means: WiFi Connection Lost - Printer Disconnected From Network. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
Form 3+Form 3BLForm 3LForm 4Form 4BFuse 1+
Likely Causes
  1. WiFi signal strength is too weak at the printer location
  2. Router has been restarted or changed WiFi credentials
  3. Printer WiFi module experienced a transient connection drop
  4. Network congestion or IP address conflict
  5. WiFi channel interference from other 2.4GHz devices
How to Fix It
1
Check the WiFi signal strength indicator on the printer touchscreen
2
Reconnect to WiFi from the printer settings: Settings > Network > WiFi
3
Move the printer closer to the WiFi router or install a WiFi access point nearby
4
If the printer supports Ethernet, use a wired connection for more reliable network access
5
Restart the router and the printer to clear any transient network issues
Pro Tip
This is a common issue that most users can resolve without specialized tools. Try the first step before moving on to more complex solutions.
Parts You May Need
WiFi range extender
Ethernet cable (for printers with Ethernet port)
Related Error Codes
100101102110111
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