LED DISPLAY AFTERPRESSING “P” Remove obstruction from path of door,or realign photo eyes. Refer to page 20.6 Photo eye becameobstructed duringdownward door travel. Door can be operated normally. Recheckadjustments if adjustment settings werenot completed. Refer to page 19.7 Adjustments settinginterrupted beforecompletion. Have opener serviced.9 Defective RPM sensor. Check door for obstructions, proper manualoperation, proper balance, or broken springs.Clear obstructions or have door serviced. If door is OK, increase force setting. REPEATTHE “SAFETY REVERSAL TEST” (page 20) AFTERADJUSTMENT IS COMPLETE.10 Force required to movedoor exceeded setforce level. Make sure rail is connected to openerhead and belt or chain is moving.11 Opener exceededmaximum run timelimit (30 seconds). Check photo eye wiring and connections.Refer to page 15. Realign photo eyes. Replace photo eye.15 Photo eye not connectedproperly. Photo eyes not aligned. Other photo eye fault. Readjust force and run opener up and downtwice. REPEAT THE “SAFETY REVERSAL TEST”(page 20) AFTER ADJUSTMENT IS COMPLETE. Have opener serviced.16 Force watchdog circuitfound error. Check door for obstructions, proper manualoperation, proper balance, or broken springs.Clear obstructions or have door servicedif needed.27 Power limitsensitivity exceeded. Check door for obstructions, proper manualoperation, proper balance, or broken springs.Clear obstructions or have door servicedif needed.28 Self learned forcelimit exceeded. Have opener serviced.36 Internal control error.SOLUTIONCODE PROBLEMThe following information is intended for use by professional installers and service persons. When LED #6 is flashing duringnormal operation, more information can be found about the status of the GDO by pressing and releasing the “P” buttononce. This will display certain LEDs which will help diagnose the fault.18. TROUBLESHOOTING —FOR PROFESSIONAL INSTALLER ONLY#6 Flashes#7 Flashes#1 + #8 Flash#2 + #8 Flash#3 + #8 Flash#7 + #8 Flash#1 + #7 + #8 Flash#1 + #5 + #6 + #7 + #8 Flash#2 + #5 + #6 + #7 + #8 FlashAll Flash30