Troubleshooting - Chamberlain 8550 Manual

Troubleshooting

UP DOWN
DIAGNOSTIC
ARROW ARROW
CODE
3 FLASHES 3 FLASHES The garage door opener is
3-3
4-1 4 FLASHES 1 FLASH
4-2 4 FLASHES 2 FLASHES The door stops while opening
4-3 4 FLASHES 3 FLASHES The door reverses for no
4-4 4 FLASHES 4 FLASHES My door reverses for no
4-5 4 FLASHES 5 FLASHES The opener runs
4-6 4 FLASHES 6 FLASHES The door reverses for no
These are additional troubleshooting issues that will not show up in the diagnostic codes:
My garage door opener beeps every 30 seconds:
Refer to the Battery Status LED section on page 27.
My remote control wil not activate the garage door:
• Verify the lock feature is not activated on the door control.
• Reprogram the remote control.
• If the remote control will still not activate the door check the diagnostic codes to ensure
the garage door opener is working properly.
SYMPTOM CAUSE
Battery LED flashing
idle and the battery LED is
Green, charging circuit
constantly flashing green
stops and starts to drain
causing battery charging
status.
Door is closing, stops and Obstruction, binding or
reverses sticking door
Obstruction, binding or
for no apparent reason sticking door
Obstruction, binding or
apparent reason or after sticking door
touching the floor
Obstruction, binding or
apparent reason or after sticking door
touching the floor
Communication error to
approximately travel module
6-8" and stops and/or
reverses
Safety sensors were
apparent reason while temporarily obstructed
traveling down or misaligned
RESOLUTION
Replace the logic board.
If your door is binding or sticking, contact a trained door systems technician. If your door is okay, reprogram
the travel, refer to page 24.
Manually open and close the door. Check for binding or obstructions. Refer to page 2.
If your door is binding or sticking, contact a trained door systems technician. If your door is okay, reprogram
the travel, refer to page 24.
Manually open and close the door. Check for binding or obstructions. Refer to page 2 .
Disconnect all power, remove cover, and locate the travel module. Ensure the wires for travel module are
connected, if wires are connected, then replace the travel module.
Review Diagnostic Codes 1-1, 1-2, and 1-4 correct as necessary. If problem persists remove the sensors
from the brackets and realign the sensors ensuring the LED's are steady and not flickering. Check for a
temporary obstruction such as a rope attached to the door. Excessive vibration on the door rails may cause
the sensors to be misaligned while the door is closing, secure rails or re-install the sensor brackets to the
wall or floor, refer to page 18.
My garage door opener light(s) will not turn off when the door is open:
The garage door opener is equipped with a feature that turns the light on when the safety reversing
sensors have been obstructed or when the motion sensor on the door control detects movement in the
garage. These features can be disabled using the door control, refer to the Door Control section.
My neighbor's remote control opens my garage door:
Erase the memory from your garage door opener and reprogram the remote control(s).
The LEDs on the door conrol blink:
If you have an Smart Control Panel installed and the TTC is set to a custom time, press the ON button on the
Premium Motion -Detecting Control Panel to set the time properly.
36