Chamberlain B2212T Installation Manual - English - Page 44

Troubleshooting Diagnostic Chart Your garage door opener is programmed with self-diagnostic capabilities. The UP and DOWN arrows on the garage door opener flash the diagnostic codes. DIAGNOSTIC CODE SYMPTOM SOLUTION Flashes 1 1 1 1 1 1 2 3 3 4 4 4 Flashes 1 2 3 4 5 6 1-5 2 3 1-4 5 6 The garage door opener will not close. Safety reversing sensors are not installed, connected, or wires may be cut. Inspect sensor wires for a disconnected or cut wire. The garage door opener will not close. The door control will not function. . There is a short or reversed wire for the safety reversing sensors. Inspect safety sensor wire at all staple and connection points, replace wire or correct as needed. The wires for the door control are shorted or the door control is faulty. Inspect door control wires at all staple and connection points, replace wire or correct as needed. The garage door opener will not close. Door moves 6-8" (15-20 cm) stops or reverses. No movement, only a single click. Opener hums for 1-2 seconds no movement. Safety reversing sensors are misaligned or were momentarily obstructed. Realign both sensors until both LEDs are glowing steady. Make sure nothing is hanging or mounted on the door that would interrupt the sensor's path while closing. Manually open and close the door. Check for binding or obstructions, such as a broken spring or door lock, correct as needed. Check wiring connections at travel module and at the logic board. Replace travel module if necessary. Manually open and close the door. Check for binding or obstructions, such as a broken spring or door lock, correct as needed. Replace logic board if necessary. Manually open and close the door. Check for binding or obstructions, such as a broken spring or door lock, correct as needed. Replace motor if necessary. Door coasts after it has come to a complete stop. Program travel to coasting position or have door balanced by a trained door systems technician. No movement, or sound. Replace logic board. Unable to set the travel or retain position. Check travel module for proper assembly, replace if necessary. The battery status LED is constantly flashing green. Battery backup charging circuit error, replace the logic board. Door is moving, stops or reverses. Opener beeps and lights Manually open and close the door. Check for binding or obstructions, such as a broken spring or door lock, correct as needed. If the door flash. is binding or sticking contact a trained door systems technician. If door is not binding or sticking attempt to reprogram travel, see Program the Travel page 34. Opener runs approximately 6-8" (15-20 cm), stops and Communication error to travel module. Check travel module connections, replace travel module if necessary. reverses. The garage door opener will not close. Safety reversing sensors are misaligned or were momentarily obstructed. Realign both sensors to ensure both LEDs are steady and not flickering. Make sure nothing is hanging or mounted on the door that would interrupt the sensor's path while closing. 44