Chamberlain HD920EV Manuale Utente

My garage door opener beeps every 30 seconds:

Refer to the Battery Status LED section on page 33.

My remote control will not activate the 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.

• Ensure both antenna wires are hanging down from the garage door opener.

These are additional troubleshooting issues that will not show up in the diagnostic codes:

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).

Your garage door opener is programmed with self-diagnostic capabilities. The UP and DOWN arrows on the garage door opener ﬂ ash the diagnostic codes.

Diagnostic Chart

DIAGNOSTIC
CODE

UP ARROW

DOWN
ARROW

SYMPTOM

CAUSE

RESOLUTION

4-1

4 FLASHES

1 FLASH

Door is closing, stops and
reverses

Obstruction, binding or
sticking door

If your door is binding or sticking, contact a trained door systems technician. If
your door is okay, reprogram the travel, refer to page 30.

4-2

4 FLASHES

2 FLASHES

The door stops while
opening for no apparent
reason

Obstruction, binding or
sticking door

Manually open and close the door. Check for binding or obstructions. For further
information refer to page 2.

4-3

4 FLASHES

3 FLASHES

The door reverses for no
apparent reason or after
touching the ﬂ oor

Obstruction, binding or
sticking door

If your door is binding or sticking, contact a trained door systems technician. If
your door is okay, reprogram the travel, refer to page 30.

4-4

4 FLASHES

My door reverses for no
apparent reason or after
touching the ﬂ oor

Obstruction, binding or
sticking door

Manually open and close the door. Check for binding or obstructions. For further
information refer to page 2.

4-5

4 FLASHES

5 FLASHES

The opener runs
approximately 6-8" and stops
and/or reverses

Communication error to
travel module

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.

4-6

4 FLASHES

6 FLASHES

The door reverses for no
apparent reason while
traveling down

Safety sensors were
temporarily obstructed or
misaligned

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 ﬂ ickering. 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 ﬂ oor, refer to page 24.