Chamberlain ‎B970 Smart Garage Door Opener

User Manual - Page 39

For B970.

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39
Diagnostic Chart
Your garage door opener is programmed with self-diagnostic capabilities. The UP and DOWNarrowson the garage door opener flash the diagnostic codes.
DIAGNOSTIC CODE SYMPTOM SOLUTION
Up Arrow
Flash(es)
Down Arrow
Flash(es)
1 1 The garage door opener will not close and the light bulbs flash.
Safety reversing sensors are not installed, connected, or wires may be cut.Inspect sensor wires for a
disconnected or cut wire.
1 2 The garage door opener will not close and the light bulbs flash.
There is a short or reversed wire for the safetyreversing sensors.Inspect safetysensor wire atall staple
and connection points, replace wire or correctas needed.
1 3 The door control will not function.
The wires for the door control are shorted or the door control is faulty.Inspectdoor control wires at all
staple and connection points,replace wire or correctas needed.
1 4 The garage door opener will not close and the light bulbs flash.
Safety reversing sensors are misaligned or were momentarily obstructed. Realign both sensors to
ensure both LEDsare steady and not flickering. Make sure nothing is hanging or mounted on the door
that would interrupt the sensor’s path while closing.
1 5 Door moves6-8" (15-20 cm) stops or reverses.
Manually open and close the door. Checkfor binding or obstructions,such as a broken spring or door
lock, correctas needed. Checkwiring connections at travel module and at the logic board. Replace
travel module if necessary.
No movement,only a single click.
Manually open and close the door. Checkfor binding or obstructions,such as a broken spring or door
lock, correctas needed. Replace logic board if necessary.
Opener hums for 1-2 seconds no movement.
Manually open and close the door. Checkfor binding or obstructions,such as a broken spring or door
lock, correctas needed. Replace motor ifnecessary.
1 6 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.
2 1-5 No movement,or sound. Replace logic board.
3 2 Unable to set the travel or retain position. Check travel module for proper assembly, replace if necessary.
3 3 The battery status LED is constantly flashing green. Battery backup charging circuit error, replace the logic board.
4 1-4
Door is moving stops or reverses. Manually open and close the door. Checkfor binding or obstructions,such as a broken spring or door
lock, correctas needed. If the door is binding or sticking contact a trained door systems technician. If
door isnot binding or sticking attemptto reprogram travel (refer to page 29).
4 5
Opener runs approximately 6-8" (15-20 cm),stops and reverses. Communication error to travel module. Checktravel module connections,replace travel module if
necessary.
Troubleshooting
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