Craftsman 139.53915D Manual Del Propietário página 34

Safeb Reversing Sensor
DiagnosticChart
Safety reversing sensors w ire
open(broken or disconnected).
Ineta,e I J I
Safety Reversing
Your garage door opener is programmed with self-diagnostic
capabilities. The "Learn" button/diagnostic LED will flash a number
of times then pause signifying it has found a potential issue. Consult
Diagnostic Chart below.
OR
Safety reversing sensors w ire
shorted or black/white w ire
reversed.
Doorcontrol or wireshorted.
Safetyreversing sensors
slightlymisaligned
(dimor flashing LED).
Motor overheated or possible
RPMsensor failure.Unplug to
reset.
Motor CircuitFailure.
Replace Receiver
Logic Board.
•"0 Symptom: Oneor bothof the Indicator lights on the safety reversing sensorsdo notglow steady•
• Inspect sensor wires for a short (staple in wire), correct wiring polarity (black/white wires
reversed), broken or disconnected wires, replace/attachas needed.
• Disconnect all wires from back of motor unit.
• Removesensors from brackets and shorten sensor wires to 1-2 ft (30-60 cm) from back of
each sensor.
• Reattachsending eyeto motor unit using shortened wires. If sending eye indicator light glows
steadily, attach the receiving eye.
• Align sensors, if the indicator lights glow replacethe wires for the sensors. If the sensor
indicator lights do not light, replacethe safety reversing sensors.
•"0 Symptom: LED is notI# ondoorcontrol.
• Inspect door control/wires for a short (staple in wire), replaceas needed.
• Disconnect wires at door control, touch wires together. If motor unit activates, replace door
control.
• If motor unit does not activate, disconnect door control wires from motor unit. Momentarily
short across red and white terminals with jumper wire. If motor unit activates, replacedoor
control wires.
•"0 Symptom: Sending indicator l ight glowssteadily, r eceiving indicator l ightis dimor flashing•
• Realign receiving eye sensor, clean lens and secure brackets.
• Verify door track is firmly secured to wall and does not move.
•.Q Symptom: Motor hasoverheated; themotorunitdoesnotoperateor trolley is stuck onstopbolt= Motor
unithums briefly; R PMSensor = Shorttravel6-8"(15-20cm)•
• Unplug unit to reset. Try to operate motor unit, check diagnostic code.
• If it is still flashing 5 times and motor unit moves 6-8" (15-20 cm), replaceRPM sensor.
• If motor unit doesn't operate, motor unit is overheated.Wait 30 minutes and retry. If motor
unit still will not operate replacelogic board.
•"0 Symptom: Motor unitdoesn'toperate.
• Replacelogic board because motor rarely fails.
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