BFT garage door opener stops immediately after start command; display shows E02 and the motor does not move.

Safety: Isolate power before disconnecting the motor or opening the operator head.

• Check for mechanical jam: Disengage the motor using the BFT manual release (key or lever). Manually move the door along the full travel. If it is hard to move or binds, inspect tracks, springs, and hinges before suspecting the motor.
• Inspect motor wiring: Open the operator cover and verify that the motor wires are correctly connected to the motor terminals on the BFT control board (often labeled M1/M2 or U/V). Look for crushed, cut, or burned insulation.
• Test motor resistance: With motor disconnected, measure resistance between motor leads. Compare to BFT specifications. A near-zero reading indicates a short; infinite indicates an open winding.
• Check gearbox: With power off and motor removed (if possible), rotate the motor shaft or output shaft by hand. If seized or very stiff, the gearbox is likely damaged.
• Reset and test: After correcting wiring or mechanical issues, clear the error by powering the unit off for 30 seconds, then on, and issue a new open/close command.

Replace the motor assembly if windings are shorted or the gearbox is seized.