Troubleshooting - LiftMaster LMRRUL Manual Del Usuario

Test
Test ALL installed sensors for proper operation. Place
an obstruction in the sensor beam path and run the
operator. The gate will stop and reverse. If the gate
does not stop and reverse, refer to Troubleshooting
below. Perform the test with the obstruction in three
locations:

Troubleshooting

Symptom Possible Cause
Obstruction does 1. Using incorrect refl ector
not cause the gate 2. Refl ector is mounted
to reverse
Gate does not 1. Minimum number of
move
2. Sensor is obstructed
Solid Red LED 1. Sensor is not properly aligned
2. Sensor is too far from refl ector
3. Refl ector or sensor lens is dirty
4. Object is obstructing beam
5. Condensation on refl ector or
Blinking Blue LED 1. Sensor is not optimally aligned
2. Sensor is too far from refl ector
3. Refl ector or sensor lens is dirty
Blinking Red LED Incorrect wiring or over voltage
Red/Blue LEDs Internal memory fault
blinking together
Red/Blue LEDs Internal fault
alternate blinking
Warranty
LiftMaster ® warrants to the fi rst consumer purchaser of this product that it is free from defect in materials and/
or workmanship for a period of 2 years from the date of purchase.
NOTICE: This device complies with Part 15 of the FCC rules and
Industry Canada's license-exempt RSSs. Operation is subject to the
following two conditions: (1) this device may not cause harmful
interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.
Any changes or modifi cations not expressly approved by the party
responsible for compliance could void the user's authority to operate
the equipment.
This device has been tested and found to comply with the limits for
a Class B digital device, pursuant to part 15 of the FCC rules and
Industry Canada ICES standard. These limits are designed to provide
reasonable protection against harmful interference in a residential
installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance
with the instructions, may cause harmful interference to radio
horizontally
entrapment devices not
installed
sensor lens
• Halfway between the refl ector and sensor
• Near the sensor
• Near the refl ector
Solution
1. USE THE PROVIDED REFLECTOR ONLY.
2. Refl ector MUST be mounted vertically
1. Review sensor connections. Slide gate operators require a
minimum or two devices; one in the close and one in the
open direction.
2. Check for obstructions.
1. Align the sensor until the blue light is solid
2. Decrease the distance between the sensor and refl ector
3. Gently clean the sensor and refl ector with a soft damp towel
4. Remove any objects obstructing beam
5. Gently clean the sensor and refl ector with a soft towel; make
sure sensor heater is connected.
1. Align the sensor until the blue light is solid
2. Decrease the distance between the sensor and refl ector
3. Gently clean the sensor and refl ector with a soft damp towel
Check for proper connection of sensor wiring.
Disconnect all power, wait 15 seconds, then reconnect power.
If issue continues, replace sensor.
Disconnect all power, wait 15 seconds, then reconnect power.
If issue continues, replace sensor.
communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the
following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that
to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.