Tools Needed: Small Phillips-head screwdriver
- Ensure system is disarmed
 - Unplug transformer


 - Loosen set screw on top of panel

 - Remove panel from wall by pulling on top 2 corners
 - Hang panel from wall mount with white strap
 - Disconnect panel battery
 - Let sit for 20-30 seconds
 - Plug panel battery back in
 - Remount panel to wall mount
 - Plug transformer back in
 - Wait 2-5 minutes
 - On the panel's Home screen, tap Security
 - Press Menu, then Toolbox


 - Enter the 4-digit master code
 - Press the right arrow twice
 - Press Cell Phone Test
 - Once panel shows "Successful", press OK
 - Press Home button

 - Tighten set screw
 
If the error persists, please call our Account Specialists for further assistance.
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