Troubleshooting Diagnostic Chart - Chamberlain RJO20C Mode D'emploi

Troubleshooting
Diagnostic Chart
Your garage door opener is programmed with self-
diagnostic capabilities. The diagnostic LED will flash a
number of times, then pause, signifying it has found a
potential issue. Consult Diagnostic
Chart below.
Installed Safety Reversing Sensor
1 FLASH
Safety reversing sensors wire open
(broken or disconnected)
OR
2 FLASHES
Safety reversing sensors wire
shorted or black/white wire reversed
3 FLASHES
Door control or wire shorted
Installed
Safety Reversing
Sensor
4 FLASHES
Safety reversing sensors slightly
misaligned (dim or flashing LED)
5 FLASHES
Motor RPM is not recognized
9 FLASHES
Cable tension monitor reversal
10 FLASHES
Limits and forces need
reprogramming
11 FLASHES
Limits and forces need
reprogramming
12 FLASHES
Attempting to compensate
13 FLASHES
Attempting to compensate
Installed
Safety Reversing
Sensor
Installed
Safety Reversing
Sensor
SYMPTOM: One or both of the Indicator lights on the safety sensors do not
glow steady.
• Safety reversing sensors are not installed, connected, or wires may be cut.
Inspect sensor wires for a disconnected or cut wire.
• There is a short or reversed wire for the safety reversing sensors. Inspect
safety sensor wire to all staple and connection points, replace wire or
correct as needed.
SYMPTOM: The door doesn't activate from the door control.
• Inspect door control/wires for a short (staple in wire), replace as needed.
• Disconnect wires at door control, touch wires together. If garage door
opener activates, replace door control.
• If garage door opener does not activate, disconnect door control wires from
garage door opener. Momentarily short across red and white terminals with
jumper wire. If garage door opener activates, replace door control wires.
SYMPTOM: Sending indicator light glows steadily, receiving indicator light
is dim or flashing.
• Realign receiving sensor, clean lens and secure brackets.
• Verify door track is firmly secured to wall and does not move.
SYMPTOM: Door travels 2-3 inches and stops.
• Reprogram limits and forces. See Adjustment section.
• If the motor unit continues to travel 2-3 inches, check the travel module
connection or replace the travel module.
SYMPTOM: No movement, motor runs 2-3 seconds.
• Reconnect the emergency release.
• Motor may need to be replaced.
SYMPTOM: Door stops and reverses while closing.
• Check for possible door obstructions and remove.
• Check that the cable tension monitor is properly connected to the opener.
• Replace the cable tension monitor.
SYMPTOM: Door stops while opening.
• Reprogram limits and forces. See Adjustment section.
SYMPTOM: Door stops and reverses while closing.
• Reprogram limits and forces. See Adjustment section.
SYMPTOM: Door stops and reverses while closing.
• Garage door opener will try to compensate three times before turning to a
10 Flash.
SYMPTOM: Door stops while opening.
• Garage door opener will try to compensate three times before turning to a
11 Flash.
33
Garage Door Opener
Diagnostic
LED
Safety Reversing Sensor