Chamberlain 3130M 1/3 HP - Manual (Page 29)

29
HAVING A PROBLEM?
1. My door will not close and the light bulbs blink on
my motor unit: The safety reversing sensor must be
connected and aligned correctly before the garage door
opener will move in the down direction.
• Verify the safety reversing sensors are properly
installed, aligned and free of any obstructions. Refer
to Installation Step 4: Install The Protector System
® .
• Check diagnostic LED for fl ashes on the motor unit
then refer to the Diagnostic Chart on the following
page.
2. My remotes will not activate the door:
• Verify your Premium door control is not blinking.
If it is blinking, deactivate the Lock Mode following
the instructions for Using the Multi-Function Door
Control.
• Reprogram remotes following the programming
instructions. Refer to Programming.
• If remote will still not activate your door, check
diagnostic LED for fl ashes on motor unit then refer
to Diagnostic Chart on the following page.
3. My door reverses for no apparent reason:
Repeat safety reverse test after adjustments to force
or travel limits. The need for occasional adjustment
for the force and limit settings is normal. Weather
conditions in particular can affect door travel.
• Manually check door for balance or any binding
problems.
• Refer to Adjustment Step 2, Adjust the Force.
4. My door reverses for no apparent reason after fully
closing and touching the fl oor: Repeat safety reverse
test after adjustments to force or travel limits. The
need for occasional adjustment for the force and limit
settings is normal. Weather conditions in particular
can affect door travel.
• Refer to Adjustment Step 1, Adjust the UP and
DOWN Travel Limits. Decrease down travel by
turning down limit adjustment screw clockwise.
5. My lights will not turn off when door is open:
• The garage door opener is equipped with a security
light feature. This feature activates the light on when
the safety sensor beam has been obstructed. Refer
to Operation section; Using the Wall Mounted Door
Control, Light Feature.
KG KG
Sending Eye Safety
Reversing Sensor
(Amber Indicator Light) Receiving Eye Safety
Reversing Sensor
(Green Indicator Light)
“Learn”
Button
LED or
Diagnostic
LED
Safety Reversing Sensor
Bell Wire