Background / Cause:

Internal current detection circuit abnormal. Caused by program error or main board hardware failure.

Solutions:

1.Restore factory settingsReset the controller to factory defaults, then power off and restart.

2.Check for repeated faultsIf the fault reappears immediately after restart, the main control board is likely damaged.

3.Replace the controllerNo on-site repair possible; replace the main board or entire controller.

Notes:

• This is an internal hardware fault, usually not caused by wiring or motor issues.

• Repeated power cycling may worsen the damage.

Background / Cause:

Motor internal encoder communication abnormal. Caused by loose connector on motor driver board or encoder hardware damage.

Solutions:

1.Check motor internal connectorOpen the motor driver board cover, check the white 9pin encoder connector is fully inserted and locked. 2.Restore factory settingsReset controller to factory defaults, power off and restart. 3.Replace motor assemblyIf fault persists, the builtin encoder is damaged; replace the motor assembly.

Notes:

• This fault relates to motor internal parts, not external wiring.

• Do not repeatedly power on/off if the fault persists.

Background / Cause:

Communication failure between controller and motor drive board. Caused by loose/damaged motor signal wires (B1/B2), external short circuit, or motor driver board failure.

Solutions:

1.Check motor signal wiringInspect B1/B2 wires between controller and motor for looseness, damage or abrasion.

2.Measure communication voltageCheck voltage between B1-B3 and B2-B3 to confirm normal communication.

3.Disconnect external devicesRemove all external sensors/accessories to eliminate short circuit interference.

4.Replace motor driver boardIf wiring and voltage are normal, the motor driver board is faulty and needs replacement.

Notes:

• This fault points to motorside communication, different from ERR10.

• Do not run the motor repeatedly when this fault occurs.

Background / Cause:

Motor current exceeds rated value. Caused by heavy door load, mechanical jamming, frequent start/stop, or motor overheating.

Solutions:

1.Check door mechanical conditionInspect track, rollers and door body for obstruction, friction or misalignment.

2.Reduce operating loadLower speed, reduce opening/closing frequency and avoid continuous heavy operation.

3.Verify door weightEnsure door weight is within motor rated capacity; adjust counterbalance if needed.

4.Cool down the motorIf motor is hot, stop operation and let it cool before restarting.

Notes:

• Frequent overload will shorten motor life.

• Solve mechanical issues first before resetting the fault.

Background / Cause:

Braking resistor or its circuit abnormal. Caused by loose wiring, burnt resistor, or motor driver board failure.

Solutions:

1.Check braking resistorInspect resistor for burn marks, cracks, discoloration or physical damage.

2.Verify wiring connectionsEnsure resistor wiring matches terminal diagram and all terminals are tight.

3.Measure resistance valueIf resistance reading is normal but fault remains, replace motor driver board.

4.Electronic brake motorFor electronic brake motors: set Parameter 17 = 0000.

Notes:

• Sectional doors without braking resistor do not trigger this fault.

• Damaged resistor may cause controller overvoltage.

Background / Cause:

Absolute encoder abnormal. Caused by open/close positions too close, overlapping, or encoder failure.

Solutions:

1.Adjust limit positionsEnsure enough distance between open and close limits; avoid overlapping.

2.Temporarily use incremental encoderGo to advanced parameters and set P4 = 0001, then redo travel setup.

3.Replace absolute encoderIf fault persists, the absolute encoder is faulty and needs replacement.

Notes:

• Absolute encoder stores position even when powered off.

• Re-learning is required after parameter change.

Background / Cause:

Door fails to reach target position within set time. Caused by travel time too long, speed set too low, or mechanical resistance.

Solutions:

1.Check electronic travel timeAdjust travel setup time to match actual door stroke.

2.Increase operating speedRaise opening/closing speed in parameter settings.

3.Adjust advanced parameter P24Enter advanced parameters and set P24 = 0100, then restart.

4.Check mechanical resistanceInspect track and rollers for friction or obstruction.

Notes:

• Low speed + heavy load easily triggers timeout.

• Do not extend time indefinitely; resolve mechanical issues first.

Background / Cause:

Abnormal Hall sensor signals from motor. Caused by loose wiring, damaged Hall sensor, or driver board fault.

Solutions:

1.Check Hall signal wiringInspect motor signal cable for loose connectors, broken wires or poor contact.

2.Inspect motor internal sensorsCheck if Hall sensors inside the motor are damaged or misaligned.

3.Replace faulty componentsIf wiring is normal, replace motor assembly or motor driver board.

Notes:

• Hall signal loss will prevent motor from starting.

• Do not force run motor repeatedly.