Troubleshooting; Diagnostic Chart - Chamberlain 8500W Installation Manual

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
Up Arrow Down Arrow
Flash(es) Flash(es)
1 1
1 2
1 3
1 4
1 5
1 6
2 1-5
3 1
3 3
3 5
4 1-4
4 5
4 6
5 5
SYMPTOM
The garage door opener
will not close and the light
flashes.
The garage door opener
will not close and the light
flashes.
The door control will not
function.
The garage door opener
will not close and the light
flashes.
Door moves 6-8"
(15-20 cm) stops or
reverses.
No movement, only a
single click.
Opener hums for 1-2
seconds no movement.
Door coast after it has
come to a complete stop.
No movement or sound.
The garage door opener
moves slightly, then stops
The battery status LED is
constantly flashing green.
The garage door opener
will not close or door
reverses during travel.
Door is moving stops and
or reverses.
Opener runs approximately
6-8" (15-20 cm), stops and
reverses.
The garage door opener
will not close and the light
flashes.
The door will not close
when using Timer-to-
Close or MyQ Smartphone
Control
SOLUTION
Safety 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 sensors. Inspect safety sensor
wire at all staple points and connection points and 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 points and connection points and replace wire or
correct as needed.
Safety 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 sensors 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.
Program travel to coasting position or have door balanced by a trained
technician.
Replace logic board.
Activate the garage door opener again. If problem persists, replace logic board.
Battery backup charging circuit error, replace logic board.
If two cable tension monitors were previously installed and one has been
removed, unplug and plug in the opener three times to relearn the monitor to the
opener.
• Check for possible door obstructions and remove.
• Check that the cable tension monitor is properly connected to the opener.
• Replace the cable tension monitor.
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 is binding or sticking
contact a trained door systems technician. If door is not binding or sticking
attempt to reprogram travel.
Communication error to travel module. Check travel module connections, replace
module if necessary.
Safety 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.
MyQ Remote LED Light must be installed to use TTC or MyQ to control the
door. Plug in the MyQ Remote LED Light and make sure it is programmed to the
garage door opener.
32
UP Button
DOWN Button