My 6440XP, mounted Parallel Arm will not calibrate and I get the three beeps?

Issue: 

  • When trying to calibrate with pressing the CAL button twice, you will get the double beep
  • The Cal LED is blinking blue (in calibration mode)
  • Opened the door to 90 degrees (between 70-110),  BUT the CAL LED would not turn a solid  BLUE.
  • also get 3 beeps.

Troubleshooting:

  • Follow troubleshooting steps outlined in instruction sheets on page 8-9. 
  • If the unit still won't calibrate after following the troubleshooting steps in instructions, then Please Verify that the arm is preloaded properly per the 4040XP instructions.  Preload should be approximately 30 degree's depending on arm used.  If arm is under preloaded then the unit may sense the door is not opening farther enough and will never calibrate.  

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